Primary 2 vocabulary becomes useful when a child can name a part, describe an action and explain a choice. This Top 100 Primary 2 Vocabulary List teaches STEM vocabulary for kids with meanings and example sentences through a small, concrete world: paper models that children can plan, build, inspect and improve. The words belong to ordinary English as well as early science, technology, engineering and mathematics. You can begin with paper, fold, edge, base and test, then extend the same conversation towards structure, evidence and explanation.

This Primary 2 vocabulary list with meanings and sentences is a teaching reference, not a hundred-word homework assignment. Families and teachers looking for Grade 2 vocabulary words, second-grade academic vocabulary or STEM vocabulary activities can select a short route that fits their learner. Primary 2, Grade 2 and second grade are search and school labels used in different systems; they do not establish identical curricula, ages or expectations. No child is expected to read this entire guide independently or master every entry at once.

The collection contains 100 distinct numbered headwords, original examples, contrast questions, paper-engineering challenges and explained answers. Its particular job is to help children move from “I made this” towards “This part supports that part; we changed this feature; here is what happened.” It is not another general mathematics dictionary, a complete science syllabus or a replacement for the wider Primary 2 vocabulary collection. The shorter words are the entry point; the more technical words are optional supported extensions.

Wait, what? Can you improve a model without making it bigger?

Maren has made a paper sign, but it falls backwards. Iona reads the task: the sign must stand on a table and show its message. Leonie folds a small support behind it. The sign is not taller. Its message is not longer. Yet something important has changed: it can now do its intended job.

The three are fictional learning characters. Maren helps organise writing and ideas; Iona checks reading, evidence and the scope of an answer; Leonie helps turn a plan into a manageable attempt, notice when to stop and recover after a difficulty. Their scenes are invented teaching examples, not testimonials about actual children. They take different roles across the activities, and a mistake never becomes a permanent description of a character.

The language question is not “Which impressive word can we add?” It is “What does the next reader need to understand?” Bigger names one kind of change. More stable names another. Improved is useful only when we can say which requirement is better met. A child who explains a small successful adjustment in ordinary words is doing valuable vocabulary work.

The K–2 engineering-design expectations published by NGSS include describing problems, communicating ideas with models and comparing results from designs. That is one curricular reference for the kind of activity used here, not a claim that this word bank is an official list or that every education system teaches the same programme. Our particular objects, stories, word selection and answers are original teaching material.

Choose a small route

A first encounter: use materials and folds with one sheet of paper. Teach sheet, edge and fold. Ask the child to show each meaning before writing a sentence. A learner who can name objects but struggles to explain: use support and structure, then say what one part does for another. A confident reader who overstates results: use testing and evidence, especially prediction, result and evidence in the surrounding discussion; only predict, result and evidence are numbered headwords.

A learner ready for connected writing: go to the project workshops, choose one challenge and produce a four-sentence account. An adult choosing the next lesson: use the teaching and transfer guide. A child who does not want to build today: read the fictional records, compare the descriptions and explain the choices orally. Making a physical object is an option, not a test of worth or a condition for joining the language work.

The ten word groups are planning, materials, shaping, joining, support, measuring, comparing, testing, improving and explaining. The order is a useful route through a project, not a compulsory sequence for vocabulary teaching. Return to a group when a task creates a reason to use its words.

Materials, access and safe boundaries

The core activities use clean, dry paper, light card, a flat table and a pencil. A ruler is useful but not essential for the first activities. Use large paper pieces that are easy for the learner to handle. An adult can prepare any strips or slots in advance. Tearing or folding can replace cutting in many tasks. Do not introduce a sharp tool just to demonstrate a word.

These are small tabletop models, not structures for people or animals. Never stand on them, support a body with them or load them with heavy objects. Where a task mentions a load, use only the light paper pieces described and keep the model close to the tabletop. Stop when paper tears, a model becomes unstable or the learner is uncomfortable. There is no need to push a design until it fails dramatically.

Let children point, speak, dictate, choose between words or use an adult-prepared model. A child who finds folding difficult can still explain a fold accurately. Separate hand control, reading, spelling and word meaning rather than treating them as one ability. Do not use an inaccessible physical task to conclude that a learner does not understand a word.

The numerical records later in this guide are explicitly fictional. They let us practise comparison and reporting without pretending that a particular paper design must produce the same result in every home or classroom. Your own observations may differ. Record what happens rather than adjusting an observation to match a model answer.

01–10 · Planning: give the object a job

Before choosing colours or folding a corner, decide what the object is meant to do. Planning vocabulary makes a project discussable. A child can have an interesting idea without yet having a workable plan; a beautiful model can still miss the purpose. These distinctions help a partner offer relevant help instead of guessing what the maker intended.

01. Problem

Meaning: something that needs to be worked out, changed or solved. Sentence: “Our paper sign has a problem: it falls over before anyone can read it.” The problem is not simply that somebody dislikes the colour. It concerns the job the sign is meant to perform.

Notice the boundary: a problem is not a person. Say “The joint comes apart” rather than “Leonie is the problem.” Naming the difficulty precisely makes a useful response possible. “It is bad” gives a partner very little information; “The top bends forward” points towards something the group can inspect.

Try it: a paper pocket looks neat, but its opening is too narrow for the message card. What is the problem? Answer: the card cannot pass through the opening as required. The colour and neatness do not resolve that difficulty. A suitable child sentence is “The opening is too narrow.”

Next use: ask the learner to complete “We need to change ___ because ___.” Accept a spoken answer or a pointed demonstration first. The aim is not a formal definition copied from memory; it is an accurate account of what needs attention.

02. Need

Meaning: something required for a purpose, rather than something merely preferred. Sentence: “The paper carrier needs a handle that stays attached when we lift the empty carrier.” The requirement is linked to a particular action and condition.

A need and a wish can both matter, but they are different. Maren would like a patterned handle. The handle also needs to be easy to hold. A pattern might help identify the carrier, yet decoration alone does not show whether the handle stays attached. Ask which feature is essential for this task and which is an optional choice.

Try it: a label must fit inside a small marked space. It may be blue, green or uncoloured. Does it need to be blue? Answer: no; the stated need is that it fits the space. Blue is an allowed preference, not a requirement.

Sentence partnership: need a part, need more space, need to check. Help the learner finish the whole expression. “Need stronger” is incomplete in ordinary writing; “We need a stronger support” tells the reader what must change.

03. Purpose

Meaning: the reason something is made or done; the job it is meant to serve. Sentence: “The purpose of the paper pocket is to keep the message cards together.” That purpose helps the group decide which design choices matter.

An object can have more than one purpose. A sign may identify a display and give a short instruction. State the purpose relevant to the present task rather than searching for the one purpose an object must have everywhere. A paper strip might be a handle in one model and a label in another.

Try it: Iona says, “This flap is useful.” Ask a question that would make her statement clearer. Answer: “What is the flap meant to do?” If it covers the pocket opening, that function supplies the missing explanation. Its usefulness depends on the intended job.

Writing move: replace “We made it because we made it” with “We made it to hold three message cards.” The second sentence connects making with a purpose. It does not need a difficult word in every line to be precise.

04. Idea

Meaning: a thought about what something could be or how something might work. Sentence: “Leonie has an idea: fold the bottom of the sign backwards to make a support.” The idea proposes a possible action; it is not yet a tested result.

Two different ideas can address the same problem. One learner may suggest a folded base; another may suggest a separate support. Listen before deciding. An unfamiliar idea is not automatically better, and a familiar idea is not automatically unsuitable. The task and the later observations help the group judge what works.

Try it: “The model stayed upright in our test” and “Perhaps a wider base will help.” Which sentence offers an idea for a possible change? Answer: the second. The first reports a result from an attempt already made.

Useful frame: “My idea is to ___ so that ___.” The final part gives the reason for trying it. An adult can write the sentence as the child speaks. Afterwards, ask what would need to be checked before presenting the idea as a successful solution.

05. Plan

Meaning: an organised account of what you intend to do. Sentence: “Our plan is to fold the base, add the label and check whether the sign stands.” The actions have an order and a purpose.

A plan is more than a wish, but it need not be a long document. Three simple drawings or three short spoken steps can be enough for a small task. A plan also may change. Revising it after noticing a missing part is not the same as having no plan at all.

Try it: Maren says, “We will make something wonderful.” Iona says, “First fold the bottom; next stand the card; then check the message.” Which gives a partner more help starting? Answer: Iona’s account. It identifies actions that can be attempted and checked.

Language check: distinguish a plan from to plan. “We made a plan” uses the noun. “We plan the next step” uses the verb. Show both in a meaningful sentence rather than asking the child to label word classes before understanding the idea.

06. Design

Meaning: a planned arrangement of parts or features for a purpose; also, the act of deciding that arrangement. Sentence: “The design has a broad base and a short upright panel.” Here the word names how the sign is arranged.

Design is not only decoration. Colour can be part of a design, but so can the position of a fold, the size of an opening and the way two parts connect. A maker should be able to say why an important feature is included. “It looks nice” may explain appearance, but not every functional choice.

Try it: two paper pockets use the same material and colour. One opens at the top; one opens at the side. Are their designs identical? Answer: no. The opening is arranged differently, even though several other features match.

Adult extension: the Science Buddies engineering-design overview describes designing, testing and revisiting a solution. Use that as a broader process reference, not a requirement to follow a rigid sequence or a claim that this particular pocket has been professionally engineered.

07. Sketch

Meaning: a quick drawing that records an idea or important features. Sentence: “Maren makes a sketch showing where the support will fold.” It helps another person understand the proposal before the object is built.

A sketch does not need polished shading or decorative detail. It does need the features relevant to the conversation. If the fold is the important choice, show its position. If the opening matters, make that visible. A neat drawing that leaves out the crucial part may communicate less than a rough but informative one.

Try it: Leonie wants to show that the pocket opens on the right. Should she spend her first effort drawing a pattern on its front or marking the opening? Answer: mark the opening. That detail explains the design decision under discussion.

Sentence partnership: sketch an idea, a rough sketch, add a note to the sketch. Ask the child to explain one line in the drawing. If the listener cannot tell what it represents, add a label or revise that line instead of redrawing everything unnecessarily.

08. Model

Meaning: a representation of something or a version made to explore an idea. Sentence: “The small paper model shows how the display could stand.” It lets the group examine some features without making a full-sized object.

A model does not reproduce every property of the thing it represents. A paper model of a shelter can show a roof shape without proving that a real shelter would keep people safe. Say what the model is being used to investigate. Do not transfer a tabletop result directly to a real building or a much heavier load.

Try it: a paper bridge spans a gap between two light boxes. Does its success with one paper token prove that a large bridge will carry people? Answer: no. The model differs in size, material, construction and load, among other conditions.

Writing move: “Our model shows ___; it does not test ___.” A child can complete this with ordinary words. Naming a limit does not spoil the project. It helps the reader understand exactly what has been learned from it.

09. Material

Meaning: what an object or part is made from. Sentence: “We chose paper as the material for the folding sign.” The sign is the object; paper is its material.

The same material can be used for different objects. The same kind of object can also be made from different materials. A card pocket and a paper pocket are both pockets, but the material may affect how each one folds or keeps its shape. Do not assume every sheet described as paper behaves identically; thickness, condition and construction can differ.

Try it: in “The frame is made from card,” which word names the material? Answer: card. Frame names the structure being made. This distinction helps children answer questions about what something is rather than what it is made of.

Transfer: ask the learner to describe a familiar safe object using “a ___ made from ___.” Then ask which part of that description would change if another material were used. The object’s purpose might remain while its material changes.

10. Tool

Meaning: an object used to help perform a task. Sentence: “The ruler is a tool for measuring the paper strip.” The tool’s role is linked to what the learner is doing with it.

A material and a tool are not the same in a particular task. Paper becomes part of the model; the ruler usually does not. Context matters, however. An object can be used in a different way during another activity. Discuss the role it is playing now instead of treating a category as permanently attached to every possible use.

Try it: Iona uses a pencil to mark a fold and a strip of paper to make the handle. Which is the marking tool? Answer: the pencil. The strip is a material component in this example. The answer comes from the actions described.

Safe use: use only tools suitable for the learner and task. An adult can prepare any cut pieces. Knowing the word tool does not require a child to handle sharp, hot or powered equipment. A pencil and ruler provide enough language work here.

Planning checkpoint: tell a partner the problem, purpose and plan without showing the finished object. Can the partner identify what is being made and what it must do? A useful answer might be “We need a sign that stands on the table. We will try a folded base.” This connects several words without forcing all ten into one crowded sentence. Keep the wider project-vocabulary overview on eduKateSG as the introductory route; this collection supplies the detailed paper-model practice.

11–20 · Materials and folds: describe the piece you actually have

Before judging a model, identify its parts accurately. Sheet, strip and layer describe different relationships. Edge and corner are not interchangeable. These words let a child understand an instruction without depending on an adult to point at every step. Work with one ordinary sheet before introducing several pieces together.

11. Paper

Meaning: the thin sheet material used here for drawing, writing, folding and making small models. Sentence: “Maren folds the paper to make a standing sign.” The word names the material rather than the finished object.

Paper in a project may be plain, printed, folded, flat, dry or previously used. Those descriptions add relevant information. “We used paper” alone may not tell a partner enough to repeat a comparison. Two pieces can both be paper while differing in thickness or condition. Keep comparisons tied to the actual pieces available.

Try it: one learner says “All paper will behave exactly like this sheet.” Another says “This sheet kept its shape in our attempt.” Which stays within the observation? Answer: the second. One sample does not establish the behaviour of every paper product.

Next sentence: “The paper is ___, so we will try ___.” A child might say “The paper is easy to fold, so we will try a folded pocket.” Treat that as a proposed use, then check the result rather than declaring success in advance.

12. Card

Meaning: in these activities, a sheet material usually thicker or stiffer than ordinary writing paper. Sentence: “Leonie uses light card for the upright panel.” Here card names a material, not a greeting message or a game piece.

The exact properties of different cards vary. Do not assume a piece is suitable for every model just because it is called card. Try a gentle fold with adult support and notice what happens. A stiff piece may keep a panel upright but be difficult to fold neatly at a tight corner.

Try it: “I wrote on a birthday card” and “The support is made from card” use the same spelling. Which sentence is mainly naming a material? Answer: the second. In the first, card names an object used for a message.

Language move: add an adjective only when it supplies useful information: thin card, stiff card, creased card. Ask what the description helps a partner predict or choose. Avoid piling several decorative adjectives onto a part whose important feature is simply that it bends differently from the other sample.

13. Sheet

Meaning: a broad, flat piece of material such as paper. Sentence: “Iona starts with one sheet and folds it into three panels.” One sheet can become a shape with several visible parts.

A sheet is not automatically a particular size. It can be large or small, rectangular or another shape. When size matters, give a measurement or compare it with an agreed reference. “Use a sheet” may be enough for free exploration; it is less useful when partners need matching starting pieces.

Try it: Maren folds one sheet twice. Has she necessarily used three separate sheets? Answer: no. Folding can create sections within the same sheet. Counting panels and counting starting sheets are different tasks.

Try a description: “We used one sheet with two folds.” This tells a reader both the amount of starting material and something about its arrangement. Ask the child to unfold the model and check the statement. The physical change makes the difference between a whole sheet and its sections easier to explain.

14. Strip

Meaning: a long, narrow piece of material. Sentence: “The paper strip becomes a handle when its ends are attached to the carrier.” The shape is narrow compared with its length.

A strip is not defined by one exact measurement. A broad sheet can be divided into narrower strips, and strips can have different lengths. For a fair classroom comparison, specify the starting pieces rather than assuming that anything called a strip is interchangeable. An adult can prepare the pieces before the lesson.

Try it: a square and a long narrow rectangle are placed side by side. Which is more naturally described as a strip? Answer: the long narrow rectangle. The answer concerns proportions, not which piece has the brighter colour.

Sentence partnership: a strip of paper, the end of the strip, fold the strip. Encourage the whole phrase “a strip of paper” when material needs to be clear. Afterwards ask whether the strip is a handle, brace or label in this model. Its shape and its job are separate descriptions.

15. Edge

Meaning: the boundary where a surface or piece ends. Sentence: “Line up this edge of the paper with the opposite edge.” The instruction concerns the boundaries, not the whole surfaces.

On a rectangular sheet, an edge extends between corners. A corner is the place where edges meet. A learner who confuses the two may bring only two points together when the task requires a whole side to align. Demonstrate the intended relation gently instead of describing the child as careless.

Try it: Iona runs her finger along one side of a flat rectangular sheet without touching its middle. Is she following an edge or a corner? Answer: an edge. A corner is a meeting point of edges, not that whole side.

Useful question: “Which edge?” Pointing can establish meaning at first; later add words such as top, left or longer when the orientation is clear. If a partner is facing the other way, turn the sheet to a shared position before judging whether the instruction was understood.

16. Corner

Meaning: the place where two edges meet in the paper shapes used here. Sentence: “Fold the lower corner towards the centre.” The corner is a particular meeting place, not the entire lower edge.

The description needs a reference. A rectangular sheet has several corners, so “the corner” can be unclear until one has been identified. Colouring a small mark beside the intended corner can support a first attempt. Then practise replacing the mark with a clearer spoken description.

Try it: Maren folds an entire side of the paper inward after hearing “Fold this corner.” What clarification would help? Answer: identify the point where the two named edges meet, and demonstrate that point moving towards the intended place. The original instruction may have needed a clearer reference.

Transfer: corners appear in maps, drawings, rooms and other contexts. Begin with the physical sheet, then ask the learner to find a corner in a simple drawn rectangle. Do not assume every curved shape has corners just because a familiar rectangular page does.

17. Surface

Meaning: the outside face or area of an object. Sentence: “The label lies flat on the front surface of the panel.” The word helps distinguish a face from an edge or an inside space.

A surface can be smooth, rough, flat, curved, dry or marked. Choose the property relevant to the task. When placing a label, the important issue may be whether it can lie flat. When reading a message, the important issue may be whether the surface is obscured by another part.

Try it: Leonie touches the broad front of a card panel, then traces its boundary. Which action explores the surface and which follows the edge? Answer: touching the broad face explores the surface; tracing the boundary follows the edge. Both belong to the same object.

Writing move: replace “Put it there” with “Put the label on the front surface.” Add a more exact location only when needed. A good direction gives enough information for the action, not every possible physical detail about the object.

18. Layer

Meaning: one thickness or level of material lying over or under another. Sentence: “The folded base has two layers of paper in this section.” The layers may come from one folded sheet rather than separate starting sheets.

A layer is a relationship within an arrangement. Unfolding a sheet can remove that arrangement without removing the original material. This makes layer different from sheet. Two sheets placed side by side are two sheets, but they do not make two layers at the same location.

Try it: one sheet is folded exactly in half. At a place where the halves overlap, how many paper layers are present? Answer: two. This describes that overlapping region, not every possible fold or part of every model.

Comparison question: “Where are the layers?” A child should identify the region before counting. If one flap overlaps only a small corner, the layer count may differ across the model. This is a useful occasion to replace an overbroad statement with “There are two layers here.”

19. Fold

Meaning: to bend one part of a sheet over another part; also, the resulting folded feature. Sentence: “Fold the bottom section backwards to make a base.” The action changes the arrangement of the paper without requiring a cut.

A fold has a position and a direction. Two learners may both fold the same sheet but produce different models because one folds near the edge and the other folds near the middle. Describe the important location before expecting the same result. Use an adult-prepared example when a physical demonstration would help.

Try it: Maren folds the upper section forward; Iona folds the lower section backward. Have they followed identical actions? Answer: no. Both actions are folds, but the part and direction differ. The shared verb does not make the instructions identical.

Word use: “Make a fold” uses the noun, while “Fold the paper” uses the verb. In either case, ask what changes in the piece. The action should be understandable before the learner is expected to explain the grammar label.

20. Crease

Meaning: a line or mark formed where material has been sharply folded or pressed. Sentence: “When the paper is opened again, the crease shows where it was folded.” The crease can remain after the sheet is no longer folded in that position.

A fold and a crease are related but not identical. A gently curved sheet may not have a clear crease. A sheet that has been opened flat may still show an old crease. This difference helps children report what is present now rather than merely remembering what action happened earlier.

Try it: Leonie unfolds the paper and points to a straight line across it. Can there still be a crease? Answer: yes, if the earlier fold left that line. Opening the paper does not necessarily remove the mark.

Sentence partnership: make a crease, an old crease, fold along the crease. Keep the distinction practical: first notice the line, then explain how it can guide another fold. There is no need to press hard or repeatedly flatten the paper to prove that the learner understands the word.

Materials checkpoint: describe one folded sheet using three different questions. What material is it? Which part are we looking at? How is that part arranged? “Paper,” “the lower section” and “two overlapping layers” answer different questions. A child can know one answer and still need support with another. Teach the missing relation rather than making the learner repeat the entire group.

21–30 · Shaping: verbs that tell a partner what to do

These action words are useful because they change a model in different ways. A partner following roll should not receive the same instruction as a partner following flatten. Use slow, safe paper movements. The language goal is to notice the difference between actions, not to make a perfect object on the first attempt.

21. Bend

Meaning: to change something from a straight or flat form towards an angled or curved form. Sentence: “Maren bends the strip gently to see how it changes shape.” The action does not necessarily produce a sharp fold.

Bending can be slight or large. It can happen because a person moves a piece or because a piece responds to a load. Describe what actually happens rather than assuming every bend means damage. A curved panel may be intentional; an unwanted sag may need attention.

Try it: Iona arches a strip smoothly without making a sharp line. Has she necessarily made a crease? Answer: no. She has bent the strip, but a clear crease is not required for a smooth curve. The words describe different features.

Transfer sentence: “The strip bent when ___.” Fill the blank with an observed event, such as a hand gently moving its ends. Do not invent a hidden cause simply to finish the sentence. A shorter accurate description is better than a confident explanation unsupported by the activity.

22. Curve

Meaning: a line or shape that bends smoothly instead of remaining straight; also, to form such a shape. Sentence: “The strip curves over the gap.” The description concerns its shape.

A curve need not be a complete circle. A gently arched line, a loop and part of a circle can all involve curves. If a task requires a particular shape, describe that shape rather than assuming the word supplies every detail. “Make a curve” leaves more freedom than “Make a loop with the ends meeting.”

Try it: a paper strip has one sharp angular fold. Another forms a smooth arch. Which better illustrates a smooth curve? Answer: the arch. The folded strip changes direction too, but its sharp corner is a different feature.

Writing move: say where the curve is: “The top edge curves forward.” That is more useful than “It is curved” when several parts could be meant. Ask the reader to point to the described part before adding further detail.

23. Curl

Meaning: to bend or wind into a curved or coiled shape. Sentence: “Leonie curls the end of the paper strip to make a small loop.” The end changes from relatively straight to a turning form.

Curl and roll can overlap, but the context helps. A curled end may be only one part of a strip. Rolling a whole sheet into a tube describes a more extensive arrangement. Do not force a single rigid boundary between words that can describe related actions; specify what part moves and what shape results.

Try it: the end of a label turns upwards while the rest stays flat. Can you describe that end as curling? Answer: yes. You do not need to claim that the whole label has rolled into a tube.

Safe demonstration: shape a loose paper strip with the fingers, without sharp edges or tight pulling. A prepared curled sample is equally useful. Ask the learner to compare the curled region with the flat region and explain which part of the description applies to each.

24. Roll

Meaning: here, to turn a sheet or strip around itself to form a rounded shape such as a tube. Sentence: “Maren rolls the paper into a loose tube.” The material wraps around rather than simply folding once along a straight line.

Roll has other everyday uses, such as a ball rolling across a surface. In this entry, the main action is forming the paper. Read the sentence before choosing a meaning. “Roll the sheet” and “The tube rolled” describe different events even though the same word family appears.

Try it: Iona wraps one long edge of a sheet around towards the other until a tube forms. Which action word fits? Answer: roll. If she opens it and presses it into a broad flat form again, flatten describes the next action.

Precision question: is the tube tight or loose, and why does that matter for this task? A narrow tube and a wide tube may serve different purposes. The verb names the action; additional words can identify the intended result when a partner needs that information.

25. Flatten

Meaning: to make something flatter or less curved or raised. Sentence: “Leonie flattens the folded flap so the label can lie against it.” The action reduces the raised shape relevant to the task.

Flattening does not necessarily remove every crease or restore a sheet to its original condition. A child may open a model and make it lie fairly flat while old fold lines remain. Avoid treating “flat again” as proof that nothing has changed in the material.

Try it: a rolled paper tube is opened and pressed gently against the table. The sheet becomes broad and less curved but still has lines from earlier folds. Has flattening necessarily removed those lines? Answer: no. Shape and visible crease marks are different observations.

Sentence partnership: flatten the flap, a flattened sheet, flatten it gently. Name the part and the purpose. If the task only requires a label to lie flat, there is no need to demand perfect flatness from every part of the whole model.

26. Press

Meaning: to apply force against something with a hand or another suitable surface. Sentence: “Iona presses the paper gently along the fold.” The action helps establish the fold without needing excessive force.

Press describes the action, not automatically its result. Pressing does not guarantee a neat crease, a secure joint or an undamaged surface. Look at what happened afterwards. This distinction is useful whenever children replace an observation with “But I did the step.” Following an action still leaves a result to inspect.

Try it: Maren says, “I pressed it, so the flap must be flat.” What should she check? Answer: whether the flap actually lies as intended. The action was an attempt; the current shape provides the relevant observation.

Safe boundary: press only the paper in these tasks, using comfortable hand pressure on a stable table. Do not demonstrate the word by pressing on another person, an animal or a fragile object. A gentle action supplies enough evidence for the language lesson.

27. Pinch

Meaning: to hold or squeeze a small part between finger and thumb. Sentence: “Leonie pinches the paper tab lightly while aligning it.” The action helps control a small part of the model.

Pinching is more local than pressing a whole flat hand against a large area. The difference can help a learner understand a precise instruction. It does not mean that every small part should be squeezed hard. Too much pressure may alter the very shape the learner is trying to preserve.

Try it: Iona uses her whole palm to smooth a sheet; Maren holds the end of a tab between finger and thumb. Which action better matches pinch? Answer: Maren’s action. Iona is pressing or smoothing a broader area.

Respectful use: demonstrate only on paper. Never ask children to pinch a person or animal. A learner who prefers not to perform the movement can identify it in an adult demonstration and explain what is being held. Word understanding is not measured by willingness to imitate every action.

28. Shape

Meaning: the form or outline of something; also, to give material a particular form. Sentence: “The shape of the base changes when we fold its sides.” Here shape names a feature of the object.

Shape is not the same as size. Two rectangles can have the same general shape but different sizes. Two pieces can have similar areas while having different outlines. Begin with simple comparisons and name the particular feature under discussion rather than using “same” for every resemblance.

Try it: one triangular label is much larger than another triangular label. Are they necessarily different kinds of shape? Answer: no. Both may be triangles, though their sizes differ. More detailed geometric comparisons can be introduced later when they serve the task.

Verb use: “We shape the paper into a support” describes an action. Ask how it was shaped: folded, rolled or curved? The more specific verb may tell a reader more. Keep shape when the broader change is the point, and add detail when another person needs to reproduce the action.

29. Join

Meaning: to bring parts together so they form a connection. Sentence: “Maren joins the two paper strips at their ends.” The sentence identifies both the action and the location of the connection.

Simply placing two pieces near each other does not necessarily join them. A connection may use a fold, a prepared tab and slot, or an adult-approved small piece of tape. The method matters when another person needs to understand how the arrangement is held together.

Try it: two panels touch but slide apart when one is moved. A third arrangement uses overlapping folded tabs that hold the panels together during the intended handling. Which has the clearer join for this task? Answer: the connected tab arrangement. Mere touching did not establish the required connection.

Useful question: “How are they joined?” Answer with a method, not only a judgement such as “well.” “Their tabs tuck into the folded pocket” helps a reader picture the connection. The next question is whether that join works under the stated conditions.

30. Attach

Meaning: to fasten or connect one thing to another. Sentence: “Iona attaches the label to the front panel.” One item is being connected to a particular place on another.

Attach and join can both describe connecting parts. Attach often directs attention to adding an item to something already identified: a label to a panel, a handle to a carrier. Do not invent an absolute rule that the words can never overlap. Read the full relationship and choose the clearest expression.

Try it: “Attach the label” leaves a partner uncertain. What information might be missing? Answer: where to attach it and, when relevant, how. “Attach the label below the opening” provides a location. An adult can supply a safe connection method appropriate to the materials.

Check afterwards: attached does not necessarily mean permanently fixed or impossible to remove. A temporary paper tab can attach a label for one display. State the intended use and examine whether the attachment serves it, rather than assuming every connection must last forever.

Action checkpoint: give a partner three different instructions using the same sheet: curve one section, flatten it, then fold a flap. Ask the partner to describe what changed after each action. The verbs should lead to distinguishable interpretations. When two words could reasonably fit the same movement, discuss what each emphasises rather than turning a flexible language choice into a guessing test.

31–40 · Joining parts: small connections make a whole

A model can have good individual parts and still come apart where they meet. This group names the connections. Work with large, easy-to-handle examples, including adult-prepared slots when needed. The aim is to explain how parts relate, not to produce intricate construction or use unfamiliar tools.

31. Tab

Meaning: a small projecting part used here to help join, hold or open something. Sentence: “The paper tab slips into the folded pocket and helps hold the panel in place.” The tab is a part of the design, not simply any loose piece nearby.

A tab may be formed by folding or prepared from a larger piece by an adult. Its usefulness depends on its size, position and connection. A tab that is too wide for its intended opening will not fit merely because both parts have the correct names. Vocabulary helps identify the relationship that needs checking.

Try it: Maren points to a narrow part sticking out from the side of a panel. It is intended to tuck behind another panel. What is that part called here? Answer: a tab. The description includes both its projecting shape and its joining purpose.

Writing move: add “The tab goes ___.” A partner should be able to identify the destination. “Into the folded pocket” is clearer than “there” when the object has several openings. Reuse the shorter word once the reference is established.

32. Slot

Meaning: a narrow opening into which something can fit. Sentence: “The prepared slot is wide enough for the paper tab.” The opening and the inserted part need compatible dimensions.

A slot is not the same as a pocket. A slot can be a narrow opening through a surface; a pocket includes a space that can hold something. In these activities, adults should prepare any cut slots. A folded opening can serve as a safer alternative when cutting is unnecessary.

Try it: the tab is wider than the slot. Should the child push harder immediately? Answer: no. Check the fit first. Forcing the part may bend or tear it without solving the mismatch. The useful description is “The tab does not fit this opening.”

Transfer: slot also appears in other contexts, including a place in a schedule. That wider use is not needed for the first lesson. Establish the concrete opening, then notice the different meaning later in a full sentence rather than assuming one definition fits every occurrence.

33. Flap

Meaning: a part attached along one side that can move or fold over another area. Sentence: “The flap covers the pocket opening when it is folded down.” The connected side lets it move while remaining part of the object.

A flap differs from a separate loose cover in this example. If the cover is completely detached, the connection described by flap may no longer apply in the same way. Identify the moving part and the side where it stays connected before asking the learner to explain its job.

Try it: Iona lifts the top section of a folded envelope while the lower edge of that section remains attached. What can she call the moving section? Answer: a flap. Its purpose may be to cover the opening or make access easier.

Precision question: does the flap cover the whole opening or only part of it? A child should check rather than assume. “The flap covers most of the opening, but one corner remains exposed” is a useful observation when a full cover is required.

34. Hinge

Meaning: a connection that allows one part to turn or swing relative to another. Sentence: “The folded connection acts as a paper hinge for the small door.” The language concerns the movement permitted at the connection.

A paper hinge is a simple model, not a claim that paper and a real door hinge behave identically. It can show how a panel opens while staying attached. It does not test the strength, durability or safety of a full-sized door. Keep the purpose of the representation explicit.

Try it: a panel is completely removed and placed beside the model. Is that movement the same as opening on a hinge? Answer: no. A hinged panel remains connected while turning. The detached panel no longer has that connection during the movement.

Supported extension: hinge is an optional technical word here. A child who says “the fold that lets the door move” has expressed the key idea. Introduce the shorter technical label after that understanding, rather than demanding a memorised definition before the mechanism is visible.

35. Seam

Meaning: a line or area where edges or pieces are joined. Sentence: “Maren checks the seam along the side of the paper pocket.” The seam marks the connection between parts, not an unrelated crease elsewhere.

Seams can be made in different ways in different materials. Here we are discussing a paper construction. Do not assume that a seam must be sewn, or that every visible line on a sheet is a seam. Ask whether the line corresponds to a join between parts or edges.

Try it: a sheet has a crease across its middle and a taped join at one side. Which feature is the seam in this model? Answer: the joined side. The middle line is a crease unless it also serves a joining role described in the task.

Inspection sentence: “The seam has opened near ___.” Naming the location helps the group decide whether to repair that connection. “The whole pocket is broken” may be too broad when most of it remains intact and one small part needs attention.

36. Overlap

Meaning: to cover part of another thing while extending beyond it. Sentence: “The two strips overlap where their ends meet.” They share a region rather than only touching along a boundary.

The amount of overlap can matter to a particular design. Too little may fail to provide the intended connection; too much may reduce the remaining length. Do not teach one amount as universally correct. State the task and examine whether the chosen arrangement meets it.

Try it: two strips meet end to end without either covering the other. Are they overlapping? Answer: no. They touch at their ends, but there is no covered shared region. Move one end slightly over the other to create an overlap.

Measurement extension: mark where the overlap begins and ends before measuring it. A learner can describe “a short overlap” orally before using a ruler. The important first distinction is between touching and covering part of another piece; numerical detail can follow when it helps compare designs.

37. Connect

Meaning: to link things together physically or through a relationship. Sentence: “The folded strip connects the upright panel to the base.” The sentence tells us which parts are linked.

Connect is a useful broad word. The precise method may be joining, attaching or folding. In another context, people connect ideas rather than paper parts. Teach the current meaning through the complete sentence and avoid treating every use as a physical fastening.

Try it: a support touches the panel but is not held in place; when the panel moves, the support stays behind. What should the group inspect? Answer: whether the support is actually connected in the way the design requires. Touching is not necessarily a useful working connection.

Writing move: replace “This connects” with “This strip connects the two side panels.” Then ask what that connection does. A complete technical explanation often needs both a relationship and a purpose. A child may provide those across two short sentences rather than one difficult sentence.

38. Separate

Meaning: to move or keep things apart; also, not joined together. Sentence: “Leonie separates the two loose labels so each can be read.” The action changes their arrangement, not their printed words.

Separate can name a deliberate step, not only a failure. Parts may be separated for checking, sorting or reuse. When a join opens unexpectedly, explain that event rather than assuming the learner intended it. Intention and physical result are different questions.

Try it: Maren removes the flap carefully to inspect the pocket inside. Iona’s flap comes away during an ordinary opening. Have both parts become separate? Answer: yes, but the first separation is planned and the second may be an unwanted result. The surrounding verbs clarify that difference.

Sentence partnership: separate the pieces, keep the labels separate, two separate parts. In spelling practice, attend to the written form without confusing a misspelling with a failure to understand the relation. The learner can demonstrate the meaning even while learning how to write it.

39. Assemble

Meaning: to put parts together to make a whole object or arrangement. Sentence: “The group assembles the stand from a panel, a base and two supports.” The whole depends on the placement and connection of the parts.

Assemble is more informative than put when several prepared parts are being brought into a working arrangement. It does not imply that the result is correct. A learner can assemble a model with one support facing the wrong way. Inspection and testing still follow.

Try it: the parts are laid in a row on the table but have not been connected. Has the intended stand necessarily been assembled? Answer: no. Organising the pieces is preparation; assembling requires putting them into the arrangement that forms the stand.

Instruction move: “Assemble the parts” may be too broad for a beginner. Supply a sketch, a named starting part or two short steps. As the learner becomes familiar with the design, remove support gradually and see whether the arrangement can be explained without copying an adult’s movements.

40. Structure

Meaning: the way parts are arranged and connected; also, a whole object considered through those supporting parts. Sentence: “The structure includes a base, two supports and an upright panel.” It describes an organised whole rather than a pile of materials.

A structure’s appearance and its arrangement are related but not identical. Two models can have the same colour while using different connections. A plain model can have a carefully considered structure. Ask the learner to identify parts and relationships before evaluating the decoration.

Try it: Iona says, “The model has paper.” Maren says, “Two folded supports connect the back panel to the base.” Which explains more about the structure? Answer: Maren’s sentence. Iona identifies material, but not how the model’s parts are organised.

Supported extension: a story can have structure too, but begin with the physical arrangement. Later, connect the idea to writing: parts need an order and relationship. Do not suggest that a paragraph literally has beams or that every structure can be understood through exactly the same features.

Joining checkpoint: show the model to a partner who did not build it. Ask the partner to trace a connection from one part to another. Can the maker name the parts, explain the join and describe how a moving part stays attached? A successful explanation is about relationships. Naming ten disconnected objects without saying how they interact is a different achievement.

41–50 · Support: say what holds what

This group contains several optional technical words. They become easier when attached to a visible paper model. Keep loads light, use the table as the working surface and stop before a model becomes unsafe. The examples concern tabletop arrangements only; they are not instructions for building structures that carry people, animals or heavy objects.

41. Base

Meaning: the lower part on which something rests or is supported. Sentence: “The sign stands on its folded paper base.” The base relates the upright part to the surface beneath it.

A base is not automatically the largest part. Its size and arrangement depend on the design. Saying “Make the base bigger” may be a useful proposal, but it is not a universal guarantee of success. The group still needs to consider the upright part, the material, the connection and the intended use.

Try it: Maren points to the top decorative flap and calls it the base. What should she check? Answer: which part supports the model from below in this arrangement. The top flap may serve another purpose, but it is not the base merely because it is easy to see.

Writing move: “The base is wider than ___.” State the comparison when it matters. “The base extends behind the panel” may be more useful than “It has a good base” because it lets the reader picture a specific feature.

42. Support

Meaning: something that holds, steadies or helps another part; also, to perform that function. Sentence: “The folded strip supports the back of the sign.” The sentence links one part to the help it provides.

A support should be identified by its role, not only its shape. Two identical strips may have different jobs if one is used as a label and the other steadies a panel. Ask what the part is doing in this model. A decorative strip does not become a support simply because it looks similar.

Try it: Iona removes one folded piece and the panel no longer stays in its intended position. What does that suggest about the piece? Answer: it was serving a supporting role in that arrangement. Report the observation without claiming that every possible stand needs exactly that piece.

Transfer sentence: “This part supports ___ by ___.” A child may say “It supports the sign by holding the back.” Accept the core relationship, then refine the description only when the next reader needs more detail.

43. Column

Meaning: in this project context, an upright supporting part. Sentence: “Two short paper columns hold up the model’s top panel.” The word identifies the supporting role and upright arrangement.

Column is a supported extension, not a required label for every young learner. Begin with “an upright support.” The same spelling has other meanings, including a vertical group in a table of information. Context tells us which use is intended. Do not assume a data-table column can carry a physical load.

Try it: one paper tube stands upright under a light panel; another lies loose beside the model. Which is functioning as a column here? Answer: the upright supporting tube. Shape alone does not determine the role; its position and job matter.

Careful reporting: “The column stayed upright during our light-paper test” is narrower than “This column can hold anything.” Keep the observation tied to the described setup. A word that sounds technical should make the report more informative, not disguise an unsupported claim.

44. Beam

Meaning: in these models, a long supporting part that extends across a space or between supports. Sentence: “The folded paper beam rests between the two upright supports.” The beam and columns play different roles in the arrangement.

A beam in a paper model is not equivalent to a beam in a real building. Its purpose here is to help children describe a relationship: one part extends across, and other parts support it. Exact professional engineering analysis is outside this vocabulary activity.

Try it: Iona labels every piece column. What question helps distinguish the crossing piece? Answer: “Which part extends across the gap between the upright supports?” In this arrangement, that part can be called the beam. Orientation and function together guide the description.

Word boundary: beam can also name light or describe a broad smile. Those meanings may be met in reading, but they are not being demonstrated by the paper support. Keep the complete sentence beside the definition whenever a familiar spelling has several uses.

45. Span

Meaning: the distance or space between supports that a part reaches across; also, to reach across it. Sentence: “The paper bridge spans the gap between two small boxes.” The verb describes reaching from one support to the other.

The bridge’s total length and its unsupported span may differ. Some material may rest on the boxes at either end. This distinction is an optional extension, but a simple drawing can make it clear. Identify the gap before trying to compare spans between models.

Try it: a strip is twenty centimetres long, with five centimetres resting on each support and ten centimetres between them. What is the described gap? Answer: ten centimetres. The entire strip is longer because part of it rests on the supports.

Safe boundary: keep these models low over the table and use only light paper pieces. The purpose is to understand and report a distance relationship. Never extend this activity to a bridge for a person or judge a real structure’s safety from a miniature example.

46. Frame

Meaning: a supporting arrangement that gives something an outline or holds parts in position. Sentence: “The paper frame surrounds the message panel.” Its role differs from the message written inside it.

A frame may be decorative, supportive or both. State the job it is meant to do in the task. A visible border printed on paper can frame a picture visually without acting as a physical support. The complete description prevents the learner from treating all borders as identical structures.

Try it: Maren draws a rectangle around her message. Leonie assembles four folded strips around a panel. Which example involves separate physical frame parts? Answer: Leonie’s arrangement. Maren has created a drawn border, which can still frame the message visually.

Inspection question: “What happens when the frame is moved?” A child may notice that one corner changes angle or a join opens. Describe that event first. The next design decision should address the observed relationship rather than simply add more decoration to the front.

47. Brace

Meaning: a part added to help steady or strengthen an arrangement. Sentence: “The diagonal paper brace helps keep this frame from leaning sideways.” The sentence describes the intended or observed role in this particular model.

A brace is identified through how it connects and supports, not only because it is diagonal. A loose diagonal strip lying on the table is not bracing the frame. Show the endpoints and the relationship they help maintain. Use the word only when that supporting job is present.

Try it: Iona draws a diagonal line on the frame’s front, while Maren connects an extra strip between two frame parts. Which change can physically act as a brace? Answer: the connected strip. A drawn line can represent a brace in a sketch, but it does not itself make that physical connection.

Supported extension: “The extra strip steadies the frame” is an acceptable first explanation. Add brace as a useful name after the action is understood. Do not demand technical terminology before the child can identify what the part contributes.

48. Balance

Meaning: here, to stay or place something in a position where it does not tip over. Sentence: “Leonie adjusts the paper panel until the small sign balances on its base.” The word concerns the arrangement’s position.

Balance does not mean that every part must be identical or equally large. A model may remain balanced with different parts arranged appropriately. Nor does staying upright once prove that it will resist every disturbance. State what was observed and under what conditions.

Try it: Maren says, “The sign stood for a moment, so it can never fall.” What is too strong about the claim? Answer: one moment of balance does not establish all future behaviour. A better statement is “The sign stood without our hands during this check.”

Language extension: a balance can also be a measuring instrument, but that is another use of the word. In this entry, children describe position and tipping. Keep those meanings separate when introducing the vocabulary so the spelling does not hide the change in context.

49. Stable

Meaning: likely to remain in its position or state under the relevant conditions, rather than easily tipping or changing. Sentence: “This sign was stable during our gentle tabletop check.” The claim is limited to the described handling.

Stable is not the same as heavy, large or permanent. A model can be light and adequately stable for one small task. A large model can still tip. Describe the test or observation instead of treating one visible feature as a complete explanation.

Try it: two signs stand when untouched. One tips when its own flap is opened; the other stays in place during the same action. Which is more stable for that opening task in these observations? Answer: the second. The comparison concerns this action, not every possible situation.

Writing move: add a condition: “stable on the flat table,” or “stable while the flap was opened gently.” This helps a reader understand the scope. Avoid presenting classroom handling as a professional safety test or transferring the conclusion to a full-sized structure.

50. Load

Meaning: what a structure carries or supports in the situation being discussed. Sentence: “The load in our paper test is three folded message cards.” Naming the load tells a reader what the model was asked to hold.

A count alone may not allow a useful comparison when the carried items differ greatly. Three large cards and three tiny paper scraps are not automatically equivalent loads. For a simple classroom comparison, use the same lightweight pieces and describe them. There is no need to calculate force or introduce heavy weights.

Try it: Iona tests one carrier with an empty paper label and another with several thick cards. Can she confidently attribute every difference to the carrier design? Answer: no. The loads differ too. She should make the comparison conditions more alike or limit her conclusion.

Safe use: keep loads to light paper pieces and models close to the table. Do not use people, animals, glass, heavy books or objects that could injure someone when falling. The vocabulary lesson requires clear conditions, not a spectacular failure.

Support checkpoint: complete “The ___ supports the ___ while ___.” A useful answer identifies two parts and a condition. Then ask what has not been tested. A learner who can explain that a paper column supported a light panel but not claim it could carry a person has learned both vocabulary and an important boundary of the model.

51–60 · Measuring: add enough numerical detail to repeat the task

Measurements make some descriptions more reproducible, but unnecessary numbers can also confuse a simple instruction. Use measurement when size or distance affects the task. Begin with comparisons, then introduce a ruler and a named unit. A number without a clear quantity or unit may leave the reader guessing.

51. Length

Meaning: how far something extends from one end to the other along the direction being measured. Sentence: “The strip’s length is twelve centimetres.” The statement identifies the quantity and its unit.

For a rectangular strip, length often refers to the longer dimension, but the task should make the direction clear. Do not argue over a label when rotating the object changes how a child sees it. Point to the endpoints, agree what is being measured and then use a consistent description.

Try it: a strip reaches from the ruler’s zero mark to the twelve-centimetre mark. What is its measured length in this example? Answer: twelve centimetres. The answer is not the number of printed labels on the ruler or the distance from an unmarked plastic edge.

Writing move: compare “Make it twelve” with “Make the strip twelve centimetres long.” The second tells a partner what quantity and unit are intended. When the task is approximate, say so; do not pretend that a rough visual estimate is an exact measurement.

52. Width

Meaning: the distance across something from side to side in the specified direction. Sentence: “The opening’s width must allow the card to pass through.” Width matters because of the fit between parts.

Length and width describe different dimensions, not different levels of importance. A long strip can still be too narrow for a label. A wide opening can be too short in another direction. Ask which dimension is relevant to the difficulty rather than changing every size at once.

Try it: a message card is narrow enough for the pocket but is too tall to fit fully inside. Is making the opening wider necessarily the solution? Answer: no. The stated difficulty concerns the other dimension. The group should inspect the height or depth relationship described by the model.

Sentence partnership: the width of the opening, a wider base, the same width. Name both things when comparing them. “This is wider than that strip” gives a clearer relationship than “This is wide” without any reference or purpose.

53. Height

Meaning: the distance from the bottom to the top in the arrangement being discussed. Sentence: “The sign’s height is measured from the table to its top edge.” The starting point and endpoint are clear.

Height depends on the orientation of the object. A flat piece lying on the table has dimensions that may be described differently when it stands upright. Establish the position before comparing measurements. The vocabulary lesson should help children make a shared reference, not punish them for imagining the object differently.

Try it: the upright panel is fifteen centimetres high, but a decorative tab extends two centimetres above it. Does the panel height necessarily equal the total height of the model? Answer: no. The topmost tab can make the total height greater. State which object or part is being measured.

Writing move: “The panel is ___ high; the whole model is ___ high.” Use this only when the distinction matters. An early learner may first point to the two different endpoints and explain orally why the measurements answer different questions.

54. Size

Meaning: how big or small something is, considered through relevant dimensions or amount. Sentence: “The label’s size must suit the space on the panel.” The word provides a broad description rather than one exact measurement.

Size is useful when speaking generally, but it may be too broad for a repair instruction. “Change the size” could mean changing length, width, height or several dimensions together. Ask which feature prevents the object from doing its job. A more exact word can save unnecessary changes.

Try it: the label is the right height but extends beyond the panel’s right edge. What should the group inspect before remaking everything? Answer: its width or its placement, according to the setup. The broad complaint “wrong size” does not yet identify the smallest useful change.

Transfer: two objects can have different shapes and still be described as similar in size for an everyday purpose. When precision matters, name the dimension rather than assuming “same size” means identical in every respect. Clear comparisons depend on the question being answered.

55. Distance

Meaning: the amount of space between two identified points or places. Sentence: “The distance between the supports is ten centimetres.” The statement names the two things being separated.

Distance is not the same as the total length of every object nearby. A strip may be longer than the gap it crosses because its ends rest on supports. Specify the endpoints before measuring. An adult can mark them lightly so the child can focus on the relation rather than search for the starting places.

Try it: the model has two support boxes, each with a broad top. Should the group measure from the outer edges or the inner edges to describe the open gap? Answer: the facing inner edges define that gap. Another question might require a different distance.

Writing move: replace “There is ten centimetres” with “The distance between the inner edges is ten centimetres.” The clearer sentence explains what the number measures. A diagram or a pointed demonstration can support the wording without replacing the need to identify the relation.

56. Measure

Meaning: to find a quantity by comparing it with an agreed unit or scale. Sentence: “Iona measures the strip with a ruler marked in centimetres.” The result can then be reported with the unit.

Measuring and estimating are different actions. Looking at a strip and judging that it is about ten centimetres long is an estimate. Aligning it with an appropriate scale gives a measurement. Neither action is automatically useless; the task determines how much precision is needed.

Try it: Maren writes “exactly ten centimetres” after looking at the strip from across the table. What should change? Answer: either measure it properly or report the value as an estimate. The word exactly should not disguise the absence of a measurement.

Procedure check: identify the quantity, choose a suitable tool, use the correct starting mark and record the unit. A child may need support with one step but understand the others. Name the missing step instead of repeating the entire procedure without explaining where the error occurred.

57. Ruler

Meaning: a straight measuring tool with a marked scale, also useful for drawing straight lines. Sentence: “Leonie places the strip beside the ruler and aligns one end with zero.” The zero mark is the measurement reference.

The physical end of a ruler is not always the zero mark. Inspect the particular tool. Some have a small unmarked margin, so starting at the plastic edge can change the reading. This is a useful concrete example of why following the visible number scale matters more than copying an assumed routine.

Try it: a strip runs from the two-centimetre mark to the nine-centimetre mark. How long is the indicated interval? Answer: seven centimetres, because the distance between those marks is seven units. Nine is the endpoint reading, not the interval from two.

First-route support: beginners can start with the strip aligned at zero and whole-centimetre examples. The offset example is an extension, not a condition for participating. Use a ruler comfortably on the table; it is a measuring tool here, not something to flick or strike with.

58. Unit

Meaning: an agreed amount used for measuring or counting. Sentence: “We use centimetres as the unit for this length comparison.” The unit gives meaning to the number.

A number such as twelve can describe twelve centimetres, twelve sheets or twelve attempts. These are different quantities. A reader cannot reliably reconstruct the result when the unit or counted object is missing. Use the smallest complete statement that makes the quantity clear.

Try it: Iona says, “The strip is twelve.” What should a partner ask? Answer: “Twelve what?” A suitable reply is “Twelve centimetres long.” If the question concerns how many strips there are, the answer would instead name a count of strips.

Comparison boundary: compare lengths using a consistent unit or make the conversion explicit when it is part of the learner’s programme. Do not introduce unnecessary unit conversion into an early vocabulary lesson. The first goal is understanding why a measured number needs an agreed reference amount.

59. Equal

Meaning: the same in the particular quantity or value being compared. Sentence: “The two strips are equal in length.” The statement concerns length, not every feature of the strips.

Equal length does not guarantee equal colour, width, material or condition. This distinction protects useful comparisons. If the question asks about length, a colour difference does not refute the equality. If the question asks whether the pieces are identical, length alone is not enough to answer.

Try it: a blue strip and a white strip each measure ten centimetres from end to end. Are their lengths equal? Answer: yes. Are the strips identical in every visible feature? No, because their colours differ. The two questions have different scopes.

Sentence move: add the quantity after equal when needed: equal in height, equal numbers of cards, equal lengths. Encourage the child to finish the relationship. “They are equal” may be clear in a shared activity, but a written report often needs to say what is being compared.

60. Estimate

Meaning: to make a reasonable approximate judgement about an amount or measurement. Sentence: “Maren estimates that the strip is about twelve centimetres long, then checks with a ruler.” The estimate comes before the direct measurement.

An estimate is not an excuse to invent a number without considering the object. Use a familiar reference or a visible comparison. It also need not match the later measurement exactly to have served a useful purpose. Compare the two values and discuss whether the first judgement was reasonably close for the task.

Try it: the measured length is thirteen centimetres. A learner had estimated twelve centimetres. Must the estimate be described as dishonest because it was not exact? Answer: no. It was explicitly approximate. The difference provides information for improving future estimates.

Writing boundary: about, roughly and approximately can signal an estimate. Do not label a value both an unmeasured guess and an exact measurement. The reader needs to know how the number was obtained, especially when it is later used to compare designs.

Measurement checkpoint: give a partner one complete measurement statement and ask what could be reproduced from it. “The distance between the inner edges of the supports is ten centimetres” identifies quantity, endpoints and unit. “It is ten” does not. The extra words are useful because they remove uncertainty, not because longer sentences are always better.

61–70. Comparing: say what is the same, what differs and why it matters

Two paper models may look alike without doing the same job. They may also look different while holding the same message equally well. Comparison becomes useful when the learner names a feature rather than saying that one object is simply better. This group supplies the language for arranging observations, recognising relationships and keeping the comparison fair.

61. Compare

Meaning: to examine two or more things to find relevant similarities and differences. Sentence: “Iona compares the two pockets by checking their widths and how easily the same card fits inside.” She uses shared questions rather than judging one pocket by colour and the other by strength.

Comparing does not mean looking only for differences. It can reveal that both models satisfy a requirement. Nor does it always require declaring a winner. A useful comparison may explain which design suits which purpose. A wide pocket could be suitable for a broad card but unnecessarily large for a small label.

Try it: one learner says that a blue model is prettier; another says that a white model stands upright longer. Have they compared the same feature? Answer: no. They have discussed appearance and stability separately. Agree on the relevant feature before drawing a shared conclusion.

Sentence move: “Both models ___, but the second model ___.” Fill the first gap with a genuine similarity and the second with a supported difference. This structure helps organise an explanation, but the words do not make an invented comparison true.

62. Similar

Meaning: alike in one or more ways, without necessarily being exactly the same. Sentence: “Maren chooses two strips of similar width for the first sketch of her paper frame.” They look close in width, but she has not claimed that their measurements match exactly.

Similar needs a relevant feature. Two objects may be similar in colour but different in shape. When a comparison is important, state the feature and inspect it. Do not assume that similar appearance guarantees similar performance: hidden folds, joins or material differences may affect what the models do.

Try it: two paper towers have the same height, but one has a square base and the other a triangular base. Can they be described as similar in height? Answer: yes. That statement does not claim that their bases are identical.

Word relationship: similarity names a way in which things are alike. Ask the learner to complete “One similarity is…” with an observable feature. “They are both good” is an evaluation that needs an explanation; “They both have folded supports” identifies a concrete shared feature.

63. Different

Meaning: not the same in a relevant way. Sentence: “Leonie notices that the second stand has a different base: its folded foot is wider.” The sentence names the difference instead of expecting the reader to discover it unaided.

Different does not mean worse, strange or unsuitable. A changed design may help one goal and hinder another. A wider base may occupy more desk space while making a particular model easier to stand. The learner should explain the consequence rather than attach an automatic value judgement to difference itself.

Try it: a model is made from green paper instead of yellow paper, with every fold and dimension unchanged. Is it different? Answer: yes, in colour. That does not by itself establish that it can carry a different load.

Writing check: use different from in a straightforward comparison and say what differs. “The new pocket is different from the old one because its opening is wider.” The explanation matters more than repeatedly using very different without identifying the feature that changed.

64. Sort

Meaning: to arrange things into sets according to a chosen feature or rule. Sentence: “Iona sorts the prepared pieces into strips, sheets and folded supports before the group begins.” She can locate the needed kind of piece without searching through the whole pile each time.

A sorting rule should make sense for the activity. Sorting by colour helps when colours carry a meaning in the design. Sorting by length helps when pieces must fit a frame. Neither rule is best for every purpose. A piece can belong to several possible categories under different rules.

Try it: the instruction says to sort by shape, but a learner puts every blue piece together. Has the stated rule been followed? Answer: not necessarily. Colour and shape are different features. Ask the learner to explain and then apply the intended rule.

Transfer: after sorting, choose one piece and ask why it belongs in its set. This checks the relationship rather than only the final arrangement. The child may move a piece correctly by copying someone else without yet being able to explain the rule.

65. Group

Meaning: a set of things considered together; as a verb, to put things together for a reason. Sentence: “Maren groups the spare tabs beside the unassembled pockets.” The arrangement connects parts that will be used together.

A group is not automatically a permanent category. Today’s group may contain the pieces needed for one model, even though the pieces differ in material, shape and size. Another task may group them differently. Naming the reason helps a reader understand why these objects belong together now.

Try it: a pile contains two strips, a folded base and a message card because all are needed for one stand. Must every piece have the same shape to form a group? Answer: no. Their shared connection is the planned model, not their shape.

Sentence practice: “This group contains ___ because ___.” Keep the explanation meaningful. The word group also describes people working together, but grouping people for an activity does not make them identical in ability or personality. Describe the task arrangement, not a permanent label for the learners.

66. Pattern

Meaning: an arrangement or relationship that follows a recognisable rule; it may repeat or grow in an organised way. Sentence: “Leonie makes a border with a pattern of one short strip followed by one long strip.” The rule helps another learner continue the arrangement.

Not every pattern repeats the same block unchanged. A sequence of one, two and three paper squares can follow a growing rule. Nor does seeing a few items always reveal one unique rule. More information may be needed to decide what the designer intended.

Try it: the supplied instruction says, “Short, long, short, long: repeat this pair.” What comes next? Answer: a short strip, because the stated pair begins again. Without the instruction, a learner could imagine other continuations, so the explicit rule matters.

Project connection: patterns may be decorative, organisational or functional. A repeating set of labels can help visitors identify similar parts. Do not assume that a repeated fold strengthens every model. Describe the arrangement first and test its effect separately when that effect matters.

67. Order

Meaning: an arrangement in which position follows a rule or sequence. Sentence: “Iona places the instruction cards in the order the builder needs to follow.” Preparing the parts comes before joining them, and checking the finished model comes afterwards.

Order is not the same as neatness. A beautifully aligned row of instructions can still tell the reader to close a pocket before inserting the part that belongs inside. Likewise, arranging strips from shortest to longest follows an order even when their colours are mixed.

Try it: three cards say “check the completed join”, “place the tab in the slot” and “find the prepared tab and slot”. Which should come first? Answer: finding the prepared parts is the first step in this particular procedure. The assembly action follows, then the check.

Meaning boundary: an order can also mean a command or a request to buy something. Here it names arrangement. Ask the learner to explain the whole sentence before selecting a definition, especially when a familiar word appears in a new classroom context.

68. Repeat

Meaning: to do or say something again. Sentence: “Leonie repeats the same gentle opening-and-closing test to see whether the paper hinge still works.” The later action gives another observation rather than merely a second description of the first observation.

Repeating does not automatically make an action correct. Repeating an unclear instruction preserves its confusion; repeating a poorly controlled test may preserve its weakness. When a trial is repeated for comparison, the learner should identify which conditions are being kept alike and whether anything has changed.

Try it: a group opens the model door once and writes the same result three times. Have they completed three trials? Answer: no. They have recorded one event repeatedly. Three trials require three actual attempts under the stated procedure.

Useful distinction: repeat tells us that an action happens again. Retest, introduced later, specifically means testing again. A repeated folding action may be part of construction rather than a test. Choose the word that explains what the action is for, not merely that it occurs more than once.

69. Position

Meaning: the place or arrangement of something in relation to other things. Sentence: “Maren changes the position of the label so it no longer covers the moving flap.” The same label can communicate more clearly in a different place.

Position is not necessarily direction. A paper arrow may be near the top of a page, which tells us its position, while pointing downward, which tells us its direction. Both pieces of information can matter to a reader following a diagram.

Try it: the label belongs below the drawing but has been placed above it. Should the learner change the spelling or the position? Answer: the position, assuming the wording is already correct. Diagnose the feature that does not match the instruction before rewriting everything.

Sentence move: name a reference point: beside the slot, below the title, between the two supports. “Put it there” may work when a speaker is pointing, but a written instruction often needs more explicit information. The purpose is to make the placement reproducible by someone who was not present.

70. Direction

Meaning: the way something points, faces or moves. Sentence: “Iona follows the arrow to check the direction in which the flap should open.” The arrow explains movement rather than simply naming the flap.

Direction needs a shared reference. Left and right may become confusing when two learners face one another. A drawing, named edge or agreed viewing position can remove the uncertainty. Directions in a procedure should fit the object as the learner is actually holding or viewing it.

Try it: a flap is in the correct place, but an arrow shows it moving towards the inside when it should open outward. What needs revision? Answer: the direction shown by the arrow. The flap’s location may remain unchanged.

Transfer: write an instruction that combines position and direction: “At the lower edge, fold the tab towards the back.” A partner should be able to identify both where to act and which way to move the paper. If either is unclear, add the missing reference rather than simply speaking more loudly.

Comparison checkpoint: describe two prepared models using three statements: one similarity, one difference and one reason the difference matters for the present task. Keep a visible feature separate from an untested claim about performance. A model may look stronger without having been tested under the same conditions.

71–80. Testing: move from a prediction to an observation

A useful test answers a question. It is not simply something interesting done to a model. The following words help a learner keep a prediction separate from an observed result, record what actually happened and avoid extending a small classroom observation into a claim about every possible design. All numerical examples in this collection are fictional teaching records unless an activity explicitly asks the learner to make a new observation.

71. Observe

Meaning: to attend carefully to something in order to find out what happens or what is present. Sentence: “Iona observes the folded stand while Leonie places the message card in its holder.” She watches the base, the join and the angle of the card.

Observation is not the same as explaining the cause. “The stand leaned towards the card” describes an event. “The card was too heavy” proposes an explanation that may need further comparison. Other possibilities could include an uneven fold or a poorly placed support.

Try it: a learner sees a corner lift from the table and writes, “The model is badly designed.” Which statement is the direct observation? Answer: the corner lifted. The judgement about the design needs a stated purpose and supporting reasons.

Access route: observations can be shared orally, through pointing, by selecting a description or through writing. A learner does not need to complete a long written report to participate in careful noticing. Keep the target vocabulary clear while adapting the way the learner communicates the observation.

72. Notice

Meaning: to become aware of a particular detail or event. Sentence: “Maren notices a small gap where the two paper edges should meet.” That detail directs the group’s attention towards a possible reason for the loose join.

Notice and observe overlap, but a useful distinction in this workshop is between attending to the activity and identifying one particular feature. A learner may observe a whole trial and notice that the tab begins to slip only when the flap opens. The more specific detail can guide a better next question.

Try it: “I noticed something wrong” leaves the builder uncertain. What detail could make the statement more useful? Answer: identify the observed change, such as “I noticed that the lower tab came out of its slot.” Other precise, relevant details are acceptable.

Word-family connection: something noticeable can be readily noticed. A change may be real but difficult to notice without close inspection. Avoid treating “I did not notice it” as proof that it did not happen, especially when the observer’s attention was directed elsewhere.

73. Inspect

Meaning: to examine something closely to check its condition or details. Sentence: “Leonie inspects the two joins before beginning another trial.” She checks whether they remain attached and whether the paper has torn.

Inspecting is purposeful examination. It differs from simply looking towards an object. A useful inspection has a question: is the tab still inside the slot, are both folds in place, or is the label covering an opening? The question helps a learner decide what information to report.

Try it: a learner inspects only the front of a model and announces that every hidden join is secure. Is that conclusion supported? Answer: not fully. The inspection did not cover the hidden joins. The learner can report what was checked and identify what remains unexamined.

Sentence move: “We inspected ___ for ___.” Examples include inspecting a fold for tears or a pocket opening for obstructions. Do not describe a quick glance as a complete inspection merely to make the work sound careful. The record should reflect the actual scope of the check.

74. Predict

Meaning: to say what you think will happen before you know the result. Sentence: “Maren predicts that a wider folded foot will help this paper sign remain upright.” She explains that the sign currently tips towards its narrow side.

A prediction can have a sensible reason and still turn out to be wrong. That does not make it dishonest. The important distinction is between anticipating an outcome and reporting an observed outcome. After the trial, compare the prediction with what actually happened rather than rewriting the prediction to make it look correct.

Try it: the group has already seen the sign fall and then writes, “We predict that it fell.” What is wrong with the statement? Answer: it presents a known past observation as a prediction. A prediction concerns an outcome not yet known at the time it is made.

Language support: “We think ___ may happen because ___.” The word may preserves uncertainty. A prediction does not need dramatic confidence. A learner who gives a cautious, relevant reason is doing more useful thinking than one who announces a certainty without support.

75. Test

Meaning: to carry out a check or activity to find out whether something works, happens or meets a requirement. Sentence: “Iona tests whether the paper pocket can hold the supplied message card without the card slipping out.” The requirement is stated before the activity.

A test needs an interpretable result. “We played with the model” does not explain what was checked. “We placed the card inside, held the model in its normal position and checked whether the card stayed in place” gives a clearer account. Use only light paper materials and the safe conditions described earlier.

Try it: a sign is intended to stand on a table. A learner tests only whether its colours look attractive. Has the standing requirement been checked? Answer: no. Appearance and standing are different goals. The activity must match the question.

Boundary: one classroom test does not establish suitability for real structures or heavy loads. A small paper model is a learning object. Describe what was tested, with what materials and under which conditions, without presenting the result as a general engineering guarantee.

76. Trial

Meaning: one attempt or run of a stated test. Sentence: “Leonie records what happens in the first trial, then prepares the model for the next attempt.” A second trial is another actual test, not another sentence about the first.

Trials are useful when they let a learner examine whether an observation repeats. However, repeated handling may itself change a paper model. A fold can soften or a join can loosen. Record such changes instead of pretending every later attempt necessarily begins with an identical object.

Try it: in a fictional record, a flap opens cleanly in two trials and catches in a third. Should the third trial be removed because it does not fit the first two? Answer: no. It is part of the record and may reveal a useful problem to investigate.

Writing pattern: “In trial two, ___.” Add the observed result rather than a vague label such as good. An outcome like “the tab stayed in the slot through one opening and closing” tells another learner what was actually checked and what counted as success.

77. Record

Meaning: to keep information so that it can be reviewed or shared later; as a noun, the information that has been kept. Sentence: “Maren records the gap between the two supports before the group moves them.” The note preserves a condition that might otherwise be forgotten.

Recording is not a guarantee of accuracy. A copied number can be wrong or missing its unit. Read the entry back against the source or observation where possible. A clear record also distinguishes a measurement, an estimate, a prediction and a personal comment.

Try it: the note says “Trial two: six.” What is missing? Answer: the reader does not know six of what, or whether six describes a count, a length or another quantity. Add the relevant object or unit and what happened during the trial.

Flexible format: a short spoken recording, an adult’s faithful transcription or a few labelled notes can preserve useful information. Choose the format that suits the learner and the task. The purpose is a dependable account, not an unnecessarily elaborate page that obscures the observation.

78. Result

Meaning: what happens or what is found after an action or test. Sentence: “The result of the trial is that the message card stays inside the pocket while the model stands normally on the table.” The sentence identifies an outcome under a particular condition.

A result is different from a reason. “The join loosened” is a result; “the overlap was too small” is a possible explanation. The explanation may be supported by comparison, but it should not be smuggled into the record as though it were directly seen.

Try it: the learner predicts that a taller stand will be easier to read. The trial shows that it blocks another label. Which is the result? Answer: the observed obstruction is the result of this trial. The earlier expectation remains the prediction.

Reporting move: keep unexpected outcomes. A useful result need not be a successful model. Discovering that a design hides an opening gives information for revision. Do not change the recorded outcome merely because a neat success story seems more pleasing than a truthful account of what happened.

79. Evidence

Meaning: information that helps support or question a claim. Sentence: “Iona uses the three written trial observations as evidence when explaining why the group wants to change the loose tab.” The observations relate to the claim about the tab, not just to the model’s appearance.

Evidence is not simply any fact placed beside an opinion. The information must be relevant. Knowing that the paper is blue does not establish that a join is secure. Seeing the join stay attached during a specified action provides more relevant information, while still leaving limits to what has been checked.

Try it: someone claims that the pocket fits the supplied card. Which is better evidence: the card was placed inside without bending, or the pocket has a cheerful drawing? Answer: the successful fit directly addresses the claim. The drawing concerns appearance.

Primary 2 explanation: “I think this because we saw ___.” Encourage a specific observation in the gap. The phrase does not turn an invented event into evidence. Use information from the supplied fictional passage or the learner’s actual activity, and distinguish clearly between the two.

80. Condition

Meaning: a circumstance or feature under which an activity happens; it can also mean the state of an object. Sentence: “Leonie keeps the same card and the same tabletop position as conditions for comparing the two stands.” The comparison is easier to interpret when relevant circumstances do not change unnecessarily.

Conditions need not all be numerical. They may include which side faces forward, whether the flap is open, or which kind of paper is used. No simple classroom comparison controls everything perfectly. The aim is to identify the important conditions and describe the limitations honestly.

Try it: one model is tested with a small card and another with a much larger card. Can the difference in their results be attributed confidently to the bases alone? Answer: no. The card also changed, so the comparison cannot isolate the base as the only explanation.

Other sense: “The paper is in poor condition” describes its state, such as being torn or damp. Explain which meaning the sentence uses. The state of the paper can itself become an important condition when the group compares models.

Testing checkpoint: ask three separate questions: What did we expect? What did we observe? What can we reasonably say now? A careful answer may include uncertainty. Naming what remains unchecked is part of a useful explanation, not a failure to finish the activity.

81–90. Improving: change the part that affects the goal

A model that does not work does not need every part replaced. Sometimes the smallest useful change is the best next move. Sometimes a damaged piece does need replacement. These words help a learner describe the kind of change being made, its purpose and the check that follows. Do not assume that more decoration, a greater size or a stronger-sounding word automatically represents improvement.

81. Change

Meaning: to make or become different. Sentence: “Maren changes the position of the title after discovering that the original title covers a useful arrow.” The revised position is different; its usefulness can then be checked.

Change is a broad word. It does not by itself mean improve, damage or repair. A model may change colour without changing its function. Another change may solve one problem while creating a new one. Describe both the feature altered and the observed consequence where the information is available.

Try it: a blue strip is replaced by a red strip of the same size and material. Is that a change? Answer: yes. Is it necessarily an improvement in stability? No; the colour change does not establish that result.

Sentence move: “We changed ___ from ___ to ___.” This pattern makes a revision easier to compare with the earlier version. It is useful for positions, dimensions or materials, but do not invent precise earlier measurements that were never taken. Use the level of detail supported by the record.

82. Adjust

Meaning: to change something so that it fits, works or suits a purpose better, often through a limited alteration. Sentence: “Leonie adjusts the angle of the folded foot so the sign stands more upright.” She works on an existing part instead of making a completely new sign.

Adjustment often suggests a smaller alteration, but there is no universal size that separates adjustment from change. The purpose and context matter. A child does not need to measure the amount of every adjustment to use the word sensibly; the action should still be described clearly.

Try it: a pocket is too narrow because a side fold takes up too much space. The learner moves that fold slightly and checks the fit again. Is adjust a suitable word? Answer: yes. The existing design is altered to improve its fit.

Boundary: adjusting is an attempt to make something suitable, not proof that the attempt succeeded. A report can say “We adjusted the foot, but the stand still leaned.” Keeping the unsuccessful result helps the next decision rather than hiding it behind a positive verb.

83. Improve

Meaning: to make something better in a relevant way. Sentence: “Iona improves the instructions by naming the edge that must be folded.” The revision makes an unclear action easier for another learner to follow.

Improvement depends on a purpose. A title can become more colourful without becoming easier to read. A model can become taller without becoming more stable. State the quality that matters: clearer, easier to open, less likely to lose the card under the tested conditions, or more accurate in its labels.

Try it: the first pocket bends the supplied card, while the revised pocket holds it flat. Has the fit improved? Answer: yes, according to that stated requirement. This does not automatically show that every other feature of the pocket has improved.

Writing move: “The change improved ___ because ___.” Fill the first gap with the relevant feature and the second with an explanation or observation. Avoid a bare announcement that everything is better when only one part has been examined. A limited, supported improvement is worth describing accurately.

84. Repair

Meaning: to fix something that is damaged or not working as intended. Sentence: “Maren repairs the loose connection by refolding and reattaching the existing tab.” The same part continues to be used after the problem is addressed.

Repair differs from replacing the whole object, although a repair may involve replacing one component. Do not insist on an artificial rule that repair can never include a new piece. The useful distinction is between restoring what is already there and discarding it without examining the actual fault.

Try it: a model has one detached label but otherwise works. Must the entire model be rebuilt? Answer: not necessarily. Reattaching or replacing the label may be enough, depending on its condition. Inspect the problem before choosing the amount of work.

Language boundary: a repair should be checked. “We repaired the join” may express the intended action, but “The join remained attached in the next trial” supplies evidence about its performance afterwards. Keep the repair process and the later result connected without treating them as the same event.

85. Replace

Meaning: to take away one thing and put another in its place. Sentence: “Leonie replaces the torn support with a new prepared support of the same size.” The original support is no longer serving that role in the model.

Replacement is not the same as addition. Adding a second label leaves the first in place; replacing the label substitutes another. This distinction matters in instructions because adding an extra piece may create clutter or change the model in a way the writer did not intend.

Try it: an instruction says to replace the narrow strip with a wider one. A learner attaches the wider strip beside the old strip. Has the instruction necessarily been followed? Answer: no. Both strips remain. The original instruction calls for substitution, unless further details specify otherwise.

Sentence pattern: “Replace ___ with ___.” Name both items when the context is unclear. Replacement may be sensible when a part cannot be repaired suitably, but it is not automatically better than a small adjustment. Choose according to the condition of the part and the intended function.

86. Strengthen

Meaning: to make something stronger or better able to resist a relevant force or difficulty. Sentence: “Maren tries to strengthen the paper handle by increasing the area of its join.” The word identifies the intended improvement, while a suitable later check examines the result.

Adding material does not guarantee greater strength in every arrangement. A new piece may introduce a weak join or make the load less convenient to support. For a young learner, the important habit is to explain the proposed mechanism simply and then check the model within safe paper-only conditions.

Try it: the group adds a strip but performs no further trial. Which report is more careful: “The handle is definitely stronger” or “We added a strip to try to strengthen the handle”? Answer: the second. It reports an action and intention without claiming an unobserved improvement.

Transfer: strengthen an explanation means make its support or clarity better, not add physical paper to the words. A relevant observation can strengthen a reasoned account. Introduce the figurative sense after the learner understands the concrete action and can explain what has become stronger.

87. Reduce

Meaning: to make an amount, size or degree smaller. Sentence: “Iona reduces the number of labels on the front so that the essential instructions remain easy to find.” Some labels are moved to a separate explanation rather than squeezed into the same space.

Reduce is not the same as remove completely. Reducing the width of a strip leaves a narrower strip. Reducing an error count may leave some errors to repair. State what becomes smaller instead of assuming that the word always describes weight or physical size.

Try it: a fictional instruction sheet contains eight labels. The revised sheet has five. Has the number been reduced? Answer: yes, by three. That arithmetic does not by itself prove the remaining labels are sufficient; the purpose of each label still matters.

Sentence move: “Reduce ___ so that ___.” This connects a smaller amount with a reason. Avoid reducing useful information merely to make a page shorter. A good revision removes unnecessary detail while preserving what a reader needs to understand or carry out the task.

88. Prevent

Meaning: to stop something from happening. Sentence: “Leonie adds a lower fold to prevent the message card from sliding out when the pocket is used as intended.” The fold is intended to stop an unwanted event before it occurs.

Prevent makes a stronger claim than reduce the chance of something. A classroom design may stop a card slipping in a particular test without preventing every possible loss under rough handling. Limit the claim to the conditions checked, or describe prevention as the purpose of the design rather than a universal guarantee.

Try it: the card slipped out once in three trials after a change. Can the group say the change prevented slipping in every trial? Answer: no. It may have reduced the problem, but one slipping event remains in the record.

Project reflection: distinguish prevention from repair. A folded stop added before the card falls is intended as prevention. Putting a fallen card back afterwards deals with an outcome that has already happened. Both actions can help, but they take place at different points in the sequence.

89. Check

Meaning: to examine something to find out whether it is correct, suitable or in the expected condition. Sentence: “Maren checks that each label names the part its arrow touches.” She uses a clear criterion rather than merely scanning the page.

Checking needs an object and a question. “Check everything” may be too broad for a first independent attempt. Begin with one useful check: does the card fit, does the flap open, does the measurement include a unit, or does the instruction name a direction?

Try it: a learner checks the spelling of hinge but does not notice that the arrow points to the base. Is the label fully checked? Answer: only its spelling has been checked successfully. The connection between the word and the named part still needs attention.

Language practice: complete “I checked whether…” with a question that can be answered from the object or supplied information. Keep the result separate: “I checked whether the pocket closed; one corner still caught.” A check is a useful action even when it reveals an unresolved problem.

90. Retest

Meaning: to test again, often after making a change or addressing a problem. Sentence: “Iona retests the revised pocket with the same message card to find out whether the wider opening now works.” The second test addresses the original fit question.

Retesting should not quietly change the requirement so that a weak model appears successful. Replacing the message card with a much smaller card may demonstrate a different fit, but it does not establish that the revised pocket now holds the original card. Name any changed conditions.

Try it: a handle fails while carrying six paper cards. After repair, the group checks it while empty and says the original problem is solved. Is that a sufficient retest of the original requirement? Answer: no. The tested load has changed. A safe retest should address the relevant original condition.

Record move: write the change, the retest condition and the observed result. “We widened the opening, tried the original card again and found that it fitted without bending.” The sequence lets another reader see how the evidence relates to the revision rather than relying on a vague claim of success.

Improvement checkpoint: ask what changed, why it changed and what happened afterwards. A reasoned account may say that an attempted improvement did not work. That is still useful learning when the next action follows from the actual result.

91–100. Explaining: give another person enough information to understand

The final group turns making into communication. A builder may know exactly what to do while leaving a reader confused. These words help a learner name a part, organise a sequence, give a reason and preserve the most important information. A technically useful explanation need not be long. It needs the right relationships, supported by the information available.

91. Explain

Meaning: to make something understandable by showing how it works, what it means or why it happens. Sentence: “Maren explains how the lower fold keeps the message card inside the paper pocket.” She connects a part with its role.

Explaining is more than naming. “This is a fold” identifies a feature. “The fold forms a lower stop, so the card does not slide straight through during normal use” describes how the feature serves the design. The exact explanation must still match the actual model and observed conditions.

Try it: a visitor asks why the opening is wider in the revised version. Is “It is wider” a complete explanation? Answer: no. It repeats the observed feature. A useful answer adds the reason, such as allowing the supplied card to fit without bending.

Speaking route: let the learner point to the relevant part while giving one clear sentence. Then try the explanation without the pointing gesture and add any missing reference. This shows which information was previously supplied by the shared object rather than by the words alone.

92. Describe

Meaning: to tell someone the relevant features of something or what happened. Sentence: “Iona describes the stand as a folded card panel with a broad foot and a narrow pocket on the front.” The listener can identify the main parts.

Description and explanation often work together, but they answer different questions. Description can say that a tab is short. Explanation can say why the short tab does not reach far enough into the slot. A task asking for visible features does not always require an unsupported theory about their causes.

Try it: the instruction asks the learner to describe the result. One answer says, “The base lifted from the table.” Another says, “The model failed because the designer was careless.” Which stays closer to the observed event? Answer: the first. The second adds an unsupported judgement about a person.

Writing move: select details that help the reader’s task. Describing every colour and crease may be unnecessary when the immediate purpose is to locate one opening. Useful description is selective without becoming inaccurate or omitting the feature the reader needs.

93. Reason

Meaning: an explanation for an action, belief or outcome. Sentence: “Leonie gives a reason for moving the label: in its first position, it hid the slot.” The reason connects the decision with a relevant problem.

A reason is not automatically a good reason. “We chose this design because it was first on the table” explains a choice, but may not justify its suitability. A stronger practical reason addresses a requirement or relevant preference. Identify what kind of decision is being discussed.

Try it: a model must fit on a small shelf. Which reason is more relevant to choosing its base: the base fits within the available space, or the designer likes long words? Answer: the fit addresses the stated requirement. The language preference does not explain the design’s suitability.

Sentence support: “Our reason was…” can help a learner begin, but ask for a specific relationship afterwards. Avoid accepting because it is better as a complete account. Better in what way, for which purpose, and according to what observation?

94. Because

Meaning: a joining word used to introduce a reason or cause. Sentence: “Maren widens the pocket because the original opening bends the message card.” The clause after because explains the decision.

Because should connect ideas that genuinely support one another. “The model stands because it is blue” is not justified by colour alone. The grammar may be possible while the reasoning is weak. Check both the sentence structure and the proposed relationship.

Try it: complete “We moved the label because…” using the fact that the label covered an arrow. Answer: “We moved the label because it covered an arrow.” Other wording is acceptable if it preserves that reason. An unrelated statement about lunch does not complete the intended explanation.

Grammar boundary: a sentence can begin with because when it includes a complete main clause: “Because the label covered the arrow, we moved it.” Do not teach a blanket ban on beginning with the word. For early independent writing, a straightforward main-clause-first sentence may be the easiest place to start.

95. Therefore

Meaning: for that reason; used to introduce a conclusion or consequence. Sentence: “The card is wider than the pocket opening. Therefore, the opening needs revision for this card.” The second sentence follows from the measured fit problem.

Therefore is more formal than so and is optional supported vocabulary here. It does not make a conclusion logical by itself. A learner still needs to connect the stated information with the proposed decision. A pleasing word cannot fill a missing reason.

Try it: the paper model is green. Someone concludes, “Therefore, it can hold six cards.” Does the conclusion follow from the colour information? Answer: no. Colour alone does not establish capacity. A relevant test or other supporting information is missing.

Punctuation support: use two short sentences as a clear starting pattern. “The flap catches on the label. Therefore, we will move the label.” Avoid joining two complete sentences with only a comma before therefore. The meaning relationship and the sentence boundary both deserve attention during revision.

96. Instruction

Meaning: information telling someone what to do or how to do it. Sentence: “Iona writes an instruction that names the part, the action and the direction: fold the lower tab towards the back.” The builder can identify the intended move.

An instruction differs from a description. “The tab is folded backwards” describes a state. “Fold the tab backwards” tells the reader to act. Both can appear in a useful guide, but a learner following a procedure needs to distinguish information about the object from actions still to be completed.

Try it: the instruction says only “Put it there.” Why might a new reader struggle? Answer: the object and destination are unclear without a shared pointing gesture. Name the part and its intended position.

Quality check: an instruction should be usable under the stated conditions. Do not ask a child to make a slot with a sharp tool merely because that would make the sentence short. Use adult-prepared parts or a non-cutting alternative. Clear instructions preserve safety and feasibility as well as grammar.

97. Sequence

Meaning: a series of items or events in a particular order. Sentence: “Leonie checks the sequence: prepare the parts, make the joins, insert the message card, then test the fit.” Each step belongs to an understandable progression.

Sequence is closely related to order, but often emphasises the series itself. A sequence can describe what actually happened or what should happen next. Keep these distinct: a planned sequence is not automatically a record of completed actions.

Try it: a recount says that the group tested a model before assembling it, but no separate component test is described. What should the writer check? Answer: whether the stated sequence matches the actual events. A component can be tested early, but the account needs to make that clear.

Writing move: use first, next, afterwards and finally where they clarify the progression. These words cannot repair a missing essential step on their own. Ask a partner to follow the sequence and identify any point at which the required part or information has not yet been supplied.

98. Diagram

Meaning: a drawing that uses selected features to show parts, relationships or a process clearly. Sentence: “Maren makes a simple diagram showing the pocket opening, the lower fold and the message card.” The drawing is organised around the explanation rather than decorative detail.

A diagram is a representation, not the object itself. It may omit unimportant colours, simplify a shape or use arrows to show movement. Those choices should help the reader, but the diagram must not imply that an untested model has been proven to work.

Try it: an arrow points to a crease while its label says slot. What needs checking? Answer: the connection between the label and the represented part. Attractive drawing does not make that connection accurate.

Text-only alternative: the learner can describe the same relationships verbally or use prepared pieces while an adult records the explanation. The vocabulary goal is understanding how a representation communicates information. Independent drawing skill should not become an unnecessary barrier when the lesson is about language and meaning.

99. Label

Meaning: a word or short expression that identifies something; as a verb, to add such identifying information. Sentence: “Iona labels the lower part of the stand ‘base’ and checks that the arrow reaches that part.” The word and its connection must both be accurate.

A label differs from a full explanation. Hinge names a part. “This fold lets the attached flap turn” explains a function. A useful display may need both, but squeezing a paragraph into every small label can make the diagram harder to read.

Try it: the word base is spelled correctly, but its arrow points to the top edge. Is the label correct as used? Answer: no. Correct spelling does not repair the wrong reference. Move the arrow or revise the wording according to the intended part.

Transfer: labels appear on diagrams, folders, containers and written records. Ask what information the label is meant to provide. A date label and a part-name label perform different jobs. Clear vocabulary helps the learner select the information rather than copying a familiar label into every space.

100. Summary

Meaning: a short account containing the main relevant points. Sentence: “Leonie gives a summary of the project: the first pocket was too narrow, the group widened it, and the original card fitted in the retest.” The account preserves the problem, the change and the result.

A summary is not simply the first few sentences copied from a longer report. It selects information according to the purpose. A visitor asking what was learned needs different details from a builder asking for every assembly step. Shortening should not remove an important limitation or turn an uncertain conclusion into a certainty.

Try it: a report describes three trials, one of which failed. May the summary say that every trial succeeded because the last trial worked? Answer: no. That changes the record. A suitable summary can describe the later success while preserving the earlier problem.

Final word-bank task: tell someone what you made, what you changed and what you observed. Use the vocabulary that makes those relationships clear. A three-sentence explanation with accurate ordinary words is more useful than a crowded paragraph that hides the actual learning behind impressive terms.

One hundred words, not one hundred simultaneous obligations: the numbered bank ends here. Related words in explanations and activities are comparisons, not additional numbered entries. Choose a few words for deep use, then return to another group when a new task makes those words useful.

Ten project workshops: use the words to make a decision

These original workshops are fictional classroom cases. Their measurements and trial records are invented for teaching, not reports of tested products or real pupils. Use them as reading and speaking tasks without building anything, or adapt the paper-only activity under adult supervision. A child can point to a prepared model, choose between descriptions or dictate an answer. The language decision matters more than manual speed.

Do not read all ten cases in one sitting. Select a case whose word group answers the learner’s present question. Begin with the story, let the learner attempt the questions, and only then read the explanation. A defensible answer need not copy the model wording. Look for the important relationship: fit, position, sequence, evidence, purpose or the difference between an intended improvement and an observed one.

Workshop 1. The sign that becomes smaller and works better

Maren makes a tall paper sign for a reading display. It has a large title and a narrow folded foot. When she places a message card in the front holder, the sign leans forward. She suggests making the title even larger because the sign is important.

Iona rereads the task: “Make a message stand that fits inside the marked desk space and holds this card in a readable position.” The task does not require the tallest possible model. Leonie proposes a different revision. They can shorten the upper panel and widen the folded foot while keeping the model inside the marked space. They first discuss the proposal on paper rather than assume it must work.

In the fictional follow-up, the revised stand holds the same card upright during three stated trials on the same tabletop. The group records that outcome. They have a useful result for their classroom requirement, not a guarantee that the stand will resist every possible disturbance.

Think before reading: What is the purpose of the model? Which two features change? Does making the model smaller necessarily mean making it worse? What limitation belongs in the group’s report?

Explained answer: the purpose is to hold the supplied message card readably within the allowed space. The panel becomes shorter and the foot wider. The revised model performs better in the recorded trials, even though it is smaller. However, two features changed together, so these trials do not isolate which change contributed how much. The group can describe the successful revised design without claiming that the wider foot alone caused the entire improvement.

Try a sentence: “We improved the stand for this task by ___, and our evidence is ___.” Include the relevant observation. Do not replace evidence with “everyone liked it”. Liking the appearance is a different judgement from observing that the supplied card stayed upright.

Workshop 2. The pocket that is tall enough but still does not fit

Leonie has a rectangular message card. In this fictional case, it is eight centimetres wide and five centimetres high. The inside opening of the pocket is seven centimetres wide. The pocket itself is ten centimetres high. Maren says there must be enough room because ten is greater than eight.

Iona asks which quantities the numbers describe. The ten-centimetre measurement concerns pocket height. The eight-centimetre measurement concerns card width. Comparing these numbers without their quantities does not answer whether the card can pass through the opening. Leonie tries to explain the mismatch without forcing or bending the card.

The group considers a revised pocket with an inside opening a little wider than eight centimetres. That is a proposal, not a supplied successful test result. Its suitability still depends on the usable interior and the way the card is inserted. The learners should check the actual fit rather than assume one changed measurement answers every question.

Questions: Which measurement directly reveals the original problem? Why is “ten is bigger than eight” insufficient? Should the first action be to force the card into the pocket? What could a clearer instruction say?

Explained answer: the seven-centimetre inside opening is narrower than the eight-centimetre card. Pocket height does not repair this width mismatch. Forcing the card may bend the card or damage the paper and is not a useful way to establish the intended fit. A clearer instruction is “Check that the usable opening is wide enough for the supplied card, then test the fit gently.” A learner can explain this orally without completing a written subtraction problem.

Transfer: repeat the reasoning with a label that is short enough vertically but covers another part because it is too wide. The vocabulary distinction is still width versus height. Changing the object helps reveal whether the learner understands the quantity rather than memorising the first set of numbers.

Workshop 3. Three trials are not three copies of a sentence

Maren’s group is checking whether a paper flap opens and closes while its hinge remains attached. They agree that one trial means opening the flap once, closing it once and inspecting the hinge. Only light paper parts are involved.

After one successful attempt, Maren writes “The hinge remained attached” on three lines. Leonie points out that the record contains three lines but only one trial. Iona asks the group to distinguish the action from the writing about the action. They then complete two more attempts. In the third actual trial, a small part of the hinge begins to separate.

The final fictional record therefore contains two trials in which the hinge remains attached and one in which a small separation appears. It does not support the statement “The hinge never loosened”. It does support a more specific description of the sequence and a reason to inspect the join before continuing.

Questions: What counts as one trial here? Why do three written lines not establish three trials? Which observation should be kept even though it is inconvenient? What should the group inspect next?

Explained answer: the agreed opening, closing and inspection form one trial. Writing the same result repeatedly does not create new physical events. The separation in the third trial must remain in the record. The group should inspect the relevant join and the condition of the paper before deciding whether to adjust, repair or replace a part. The case does not provide enough information to declare one repair method uniquely correct.

Sentence task: complete “Our first two trials ___, but the third trial ___.” Preserve the contrast. A summary that mentions only the last failure would also be incomplete if it suggested the hinge never worked at all. Accurate reporting protects both successful and unsuccessful observations.

Workshop 4. The bridge has a length and a span

An adult prepares a low paper model resting on two supports placed on a tabletop. No person, animal or heavy object is placed on the model. The activity can also be discussed entirely from the description. In this fictional arrangement, the paper strip is twenty centimetres long. Five centimetres at each end rest on the supports. The gap between their inner edges is ten centimetres.

Leonie labels the whole strip “span: twenty centimetres”. Iona notices that the label has assigned the full length to a different quantity. Maren sketches a line representing the whole strip, then marks the portions resting on the supports. They can now distinguish the complete strip from the gap it crosses.

The distinction does not tell them how much load the strip can support. That is another question requiring a suitable, safe test and a clear record. A correct measurement label is useful, but it is not a capacity certificate.

Questions: What is the full length? What is the span in the stated arrangement? How much of the strip rests on the supports in total? Does knowing the span alone establish that the model can hold a particular load?

Explained answer: the full length is twenty centimetres, while the gap crossed is ten centimetres. The two five-centimetre end portions total ten centimetres resting on the supports. These measurements describe the arrangement. They do not, by themselves, establish the model’s load capacity. Keep the arithmetic tied to the diagram or verbal representation so that the child can identify which quantity each number describes.

Transfer: change the end portions to four centimetres each while keeping the strip twenty centimetres long. The remaining gap would be twelve centimetres in this simplified arrangement. Treat this as an optional arithmetic extension, not a requirement for understanding that length and span name different aspects of the same model.

Workshop 5. The correct word points to the wrong part

Maren prepares a simple text-and-drawing explanation of a paper door. The flap is attached along one side by a folded paper hinge. A separate lower fold forms the base of the model. She spells every label correctly, including flap, hinge and base.

Iona checks the references rather than only the spelling. The arrow from hinge points to the lower base, while the arrow from base points to the turning join. Leonie says that the labels look neat, but neatness has not solved the reference problem. A visitor following the labels would learn the wrong relationship between the terms and parts.

The group moves the arrows to their intended parts. They then add one sentence explaining that the hinge allows the attached flap to turn. They do not describe the paper model as a complete representation of every kind of real door mechanism.

Questions: Which part of the labelling is already correct? Which part needs repair? Why is the additional sentence useful? Does every label need to contain a full paragraph?

Explained answer: the spelling is correct, while the arrow-to-part relationships are wrong. Moving the arrows repairs that specific problem without requiring every word to be rewritten. The additional sentence explains a function that a short label alone merely names. Full paragraphs are not needed inside every label; a separate brief explanation may communicate more clearly.

Try it: describe a different error in which the arrow is correct but the word is misspelled. Then describe a third case in which the name and arrow are correct but the function sentence is wrong. These cases require different repairs. Distinguishing spelling, reference and explanation helps the learner check the actual problem instead of calling every mistake a vocabulary failure.

Workshop 6. An attractive label hides the instruction

Leonie adds a large decorated label to the front of a paper pocket. It is readable from nearby, but it covers the opening. Maren suggests adding another instruction above it: “Put the card inside.” Iona asks whether more words will solve the obstruction.

They inspect the model. The problem is not that the visitor lacks the instruction to insert the card. The physical opening is hidden and partly blocked by the label. They decide to reposition the label and reduce its width. After the revision, the label still identifies the pocket, and the opening is visible.

In a fictional reader check, a visitor can identify the opening and insert the supplied card without asking where it goes. That gives useful evidence about this interaction. It does not establish that every possible visitor will understand every future version of the display.

Questions: Is the first problem mainly spelling, meaning, position or missing decoration? Why might adding another label make the display less useful? What evidence supports the revised arrangement? Which part of the original work can be preserved?

Explained answer: the main problem is the label’s position and size relative to the opening. Adding more words without moving the obstruction may increase clutter while leaving the physical problem unchanged. The stated reader check supports the usefulness of the revised arrangement for that visitor and card. The accurate label wording can remain. The group repairs the relevant feature rather than discarding the whole design.

Transfer sentence: “We reduced ___ and changed ___ so that ___.” Keep the final clause tied to the reader’s task. “So that it looked more impressive” is not the same purpose as making the opening findable and usable. Both appearance and use can matter, but they should be identified separately.

Workshop 7. Two changes make one cause difficult to identify

The group compares two paper stands. Stand A has a narrow folded foot and uses a small message card. Stand B has a wider folded foot and uses a much larger card. In the fictional trial, Stand B falls while Stand A remains upright.

Maren starts to write, “A wider foot makes a stand worse.” Iona points out that the card changed too. Leonie also notices that the description does not tell them whether every fold, material and placement was otherwise alike. The result is real within the fictional case, but the explanation is not isolated by the comparison.

They write a more limited report: “Under the stated conditions, Stand B fell and Stand A remained upright. Because the cards differed, this comparison does not show that foot width alone caused the difference.” They propose a new comparison using the same card, while recognising that other relevant conditions should also be checked.

Questions: Which outcome was observed? Which causal claim is too strong? What important condition can be made more alike in a new comparison? Does an imperfect comparison have to be erased from the record?

Explained answer: the observed outcome is the different standing performance in the two stated trials. The claim that a wider foot generally makes a model worse goes beyond the evidence. Using the same message card would make the next comparison more informative about the base, though it does not magically control every possible difference. The original record should remain, accompanied by its limitation.

Child-sized response: “We changed two things, so we cannot tell which one mattered most from this test.” That sentence is enough to express the main reasoning. An adult can introduce more formal experimental vocabulary later; it should not obscure a distinction the learner already understands in ordinary language.

Workshop 8. Prediction, observation and explanation belong in different sentences

Before a trial, Leonie says, “I think this longer tab may stay in the slot when the flap opens.” Her reason is that the old tab barely reached through the slot. Maren records the prediction before the group tests the model.

In the fictional trial, the longer tab remains in place through one opening and closing. Iona reports that observation without adding an untested guarantee. The group then offers an explanation: the extra reach may have helped keep the tab engaged. They have a plausible account, but this single comparison does not establish every possible cause or future outcome.

Maren’s first summary reads, “We knew the new tab would never come out.” That sentence changes both the earlier uncertainty and the limited outcome. The group revises it to preserve the actual sequence: expectation first, test next, observation afterwards, explanation with appropriate limits.

Questions: Which sentence is the prediction? What exactly is observed? Which explanation remains provisional? Why is never too strong in the first summary?

Explained answer: Leonie’s statement before testing is the prediction. The tab remaining in place during one opening and closing is the observation. The claim that extra reach helped is an explanation consistent with the account, but the case does not isolate every relevant factor. Never extends one successful action to all future occasions, which the observation cannot justify.

Writing task: produce three sentences beginning “We predicted…”, “We observed…” and “A possible reason is…”. The sentence openings support organisation, but the information must go into the correct places. Do not call a prediction false merely because it was uncertain; uncertainty was part of its honest wording.

Workshop 9. Repair one part, not the entire story

A paper display has a sound base, a readable title and a torn pocket flap. Leonie wants to rebuild everything because the display is no longer perfect. Iona asks which functions still work. Maren makes a short condition record: the base stands, the title remains readable, and the flap cannot close properly.

The group considers repairing the flap, replacing only the flap, or making a new pocket. The case does not specify exactly how the paper is torn, so it does not establish one universally correct repair. An adult may prepare a replacement part where needed. The decision should address the damage without demanding unnecessary manual work from the child.

After choosing a suitable repair, the group must check the closing action again. The title’s readability does not prove that the flap has been fixed. Likewise, a working flap does not prove that the model has no other issue. Each claim needs its own relevant check.

Questions: Which parts can probably be preserved based on the record? What further information would help choose repair versus replacement? What retest addresses the problem? Why is “everything was broken” an inaccurate summary?

Explained answer: the functioning base and readable title can be preserved unless another relevant problem appears. Inspecting the tear and connection would help determine whether the flap can be repaired suitably. Opening and closing the repaired or replacement flap under the intended conditions addresses its function. Everything was not broken: the record identifies one damaged component alongside two working features.

Transfer: apply the same reasoning to a written paragraph with an accurate idea but one unclear reference. The paragraph may need a precise noun or corrected pronoun, not a complete rewrite. Physical repair and language revision are different tasks, but both benefit from identifying the smallest meaningful problem before acting.

Workshop 10. Hand the model to someone who did not build it

Maren, Iona and Leonie prepare a paper message stand for another group. The new group has not watched the construction. A title says what the model is for. Three labels identify the base, pocket and flap. A short instruction explains where to insert the card and how to open the flap.

Maren checks the structure of the explanation. Iona checks that each word and arrow refers to the intended part. Leonie checks whether the steps can actually be carried out in the stated order. None treats speed as the main goal. A hesitant reader is allowed to ask a question without being judged as a weak learner.

The new group asks, “Which side faces us?” That question reveals a missing orientation cue. The builders add a clear front reference rather than repeat the same ambiguous instruction more loudly. They then ask whether the revised explanation answers the question.

Questions: What information did the builders know that the new readers did not? Which word group helps repair that gap? Why is the question useful feedback? What should a final summary preserve?

Explained answer: the builders knew the intended orientation through their shared activity. The new readers needed position and direction information in the text or representation. Their question identifies missing information, rather than proving a lack of intelligence or effort. The summary should state the model’s purpose, the important revision and the outcome of the reader check without claiming that no further questions are possible.

Final transfer task: give a three-sentence handover: “This model is for…”, “Use it by…” and “We changed…because…”. The exact wording may vary. The reader should understand the function, the necessary action and one reasoned improvement. Accurate use of a few words now matters more than recalling every headword on demand.

Teaching the collection without turning it into a hundred-word burden

Start with a task, not the size of the bank. Ask what the child needs to say next: name a part, distinguish two measurements, explain a change or report an observation. Select three to five words that answer that need. This number is a practical starting suggestion, not a research-established dose or a requirement for every learner.

For a first meeting with the words, an adult might choose fold, base and support. Show or describe a small prepared model. Say the word, connect it to the visible feature and ask the child to identify another example. Then introduce one non-example: a drawn line is not necessarily a supporting part. The contrast makes the meaning more useful than copying the word several times.

The Institute of Education Sciences’ foundational reading guide for kindergarten through Grade 3 includes teaching academic language and vocabulary. Its academic-language recommendation carries a minimal-evidence rating within that guide; it should not be presented as strong experimental proof for this exact word bank or project sequence. Reading instruction also involves skills beyond vocabulary, so this collection should complement rather than replace the learner’s broader literacy teaching.

A short encounter, an attempt and a useful correction

Let the learner attempt a sentence before supplying a complete model. “The base is the part at the bottom” may be a good beginning. Ask what the base does in this particular object, rather than demanding an adult-level definition immediately. If the child points to a different part, inspect whether the word is misunderstood or the object has been viewed from another orientation.

Correct one meaningful issue at a time. A child who understands crease but spells it incorrectly needs written-form support. A child who spells evidence correctly but treats a guess as an observation needs help with the concept. A child who knows the meaning but cannot manipulate the paper may need a prepared model or an oral route. These are different needs, not a single label of poor vocabulary.

A useful feedback sentence names the relationship: “That is the height; the width goes across this opening.” This gives the child a new way to decide. “Wrong—try harder” supplies neither the distinction nor a next action. Keep the correction proportionate to the task and let the learner try a new example after the explanation.

Return later with a changed example

The IES guide Organizing Instruction and Study to Improve Student Learning supports spacing learning and using retrieval-oriented activities. It concerns broad learning principles, not a validated timetable for this article. A practical application is to revisit selected words after a delay, ask for an attempt before revealing the example, and connect the response with clear feedback.

On the next occasion, change the object. A learner who identified the base of a sign can identify the base of a different paper model. Someone who distinguished card width from pocket height can inspect a label that covers a slot. This tests whether the relationship transfers beyond the copied sentence. Do not treat difficulty with a new context as proof that the previous learning was worthless; it identifies where another example may help.

Keep a small record of meaning, recognition, independent use and spelling. Note what support was needed. “Explained replace after hearing two choices” is different from “Used replace independently to describe a new revision.” Both observations are useful. Neither needs to become a permanent judgement about the child’s ability.

Oral language, reading and writing can develop at different rates

A child may explain a design clearly in conversation while needing help to read approximately or write a complete reason sentence. Another may decode structure accurately without understanding the relationship among parts. Let the response show which skill is secure. Do not require independent reading of every adult note before the learner can benefit from the child-facing examples.

For multilingual learners, an explanation in a familiar language may reveal that the underlying concept is already understood. Connect that idea with the English word and a natural English sentence. A one-word translation can be a reminder, but check it in context: card, order, condition and record have different uses. No single translated equivalent is supplied here as though it would fit every language and sentence.

During play or making, adults can name a relevant action without interrupting every moment. The PBS resource Kids Can Learn STEM Vocabulary Through Play! offers a practical example of connecting STEM language with everyday activity. Treat it as a teaching illustration rather than evidence that casual play alone guarantees mastery of this collection.

A twenty-item check with explained answers

This is an informal teaching check, not a standardised test, a grade predictor or an official Primary 2 assessment. Read the questions aloud when decoding is not the target. Use five items at a time and accept a clear oral explanation. For open questions, other answers can be correct when they preserve the intended meaning and respect the supplied information.

Questions 1–5: name the relevant feature

1. A fold is opened again, but its marked line remains. Which word names that line: crease or load? 2. A small projecting part fits into a prepared opening. Name the projecting part and the opening. 3. A card is too broad to pass through a pocket opening. Which quantity is directly relevant: width or height? 4. The lower folded part helps a sign stand. Name its position-related role using a word from the bank. 5. A drawing shows selected parts and uses arrows to explain movement. Which word names this kind of representation?

Questions 6–10: keep the actions distinct

6. One strip is removed and another put in its place. Is that replacement or merely addition? 7. A child carries out the same opening-and-closing check three times. How many trials have occurred under that definition? 8. The child writes one observed result on three lines without doing the action again. Does that create three trials? 9. A torn join is fixed and the same model continues to be used. Which word describes restoring the damaged part? 10. The repaired model is checked again under the original relevant condition. Which word names that testing action?

Questions 11–15: separate evidence from overstatement

11. Before testing, a learner says the revised pocket may hold the card more securely. Is that a prediction or an observed result? 12. The pocket holds one supplied card in one stated trial. Does that establish that it will hold every possible card? 13. One model uses a wider base and a larger card than another. Can a difference in outcomes be attributed confidently to the base alone? 14. The model is blue. Is that relevant evidence that its join will remain attached? 15. A summary says every trial succeeded, but the supplied record contains one failure. Is the summary accurate?

Questions 16–20: explain and transfer

16. Write or say a clear instruction for placing a label without using only “Put it there.” 17. Give one sentence using because to explain a useful revision. 18. Two pieces are equal in length but different in colour. Can both descriptions be true? 19. A paper strip is twenty centimetres long, with five centimetres resting on each support. What is the remaining gap in the simplified arrangement? 20. Give a three-part summary of a fictional model problem, a revision and a retest result. Make clear that you are inventing the example rather than reporting an actual event.

Answers 1–5: identify the part, not merely a familiar word

1: Crease. The line remains after the folded paper is opened. Load describes what a structure carries or supports in the relevant use. 2: Tab and slot. The tab projects; the prepared slot receives it. 3: Width. The problem concerns the card’s side-to-side fit through the opening, not merely how tall the pocket is. 4: Base. Support may also describe what it does, but base identifies the lower supporting part in the stated arrangement. 5: Diagram. A diagram selects features to communicate relationships rather than necessarily recording every visible detail.

Answers 6–10: a written record is not the action itself

6: Replacement. The original strip is removed from that role and another takes its place. 7: Three trials. Each complete stated check is one trial. 8: No. Repeated writing records the same event more than once; it does not create new attempts. 9: Repair. The damaged join is restored while the model remains in use. 10: Retest. Testing again checks the revised condition. Accept “test again” as an accurate explanation even when the learner does not yet retrieve the single word independently.

Answers 11–15: preserve the scope of the information

11: A prediction. The outcome is anticipated before it is known. 12: No. One card and one trial leave other sizes, materials and conditions untested. 13: No. The card also changes, so the comparison does not isolate the base. 14: Not by itself. Colour does not establish the relevant attachment performance. 15: No. The summary contradicts the record by erasing the failure. A later successful trial can be reported without claiming that every earlier attempt succeeded.

Answers 16–20: more than one clear response is possible

16: “Place the title label above the pocket opening” is one clear example. It names the object and destination. 17: “We moved the label because it covered the slot” gives a relevant reason. 18: Yes. Equal length and different colour concern different features. 19: Ten centimetres, because the two supported portions total ten centimetres of the twenty-centimetre strip. This arithmetic item is optional when the lesson is focused only on word meaning. 20: One fictional example is: “The flap caught on the label. We moved the label. In the retest, the flap opened without catching.” Other coherent examples are acceptable when the problem, change and observed outcome remain distinct.

Use the answers to choose a small next lesson. A learner who confuses trial with record needs an event-and-note comparison. A learner who names parts correctly but writes vague instructions needs practice with position and direction. A learner who overstates conclusions needs help matching claims with observations. Giving every child the same larger spelling list would miss these differences.

Questions about this Primary 2 vocabulary collection

Is this an official list for every Primary 2 or second-grade child?

No. It is an original, selectable educational collection. Primary 2, Grade 2 and second grade are useful audience labels, but countries and schools organise learning differently. Some words are suitable for supported discussion before independent reading or writing. Follow the learner’s actual curriculum and readiness rather than treating all hundred entries as a universal minimum.

Why use technical words with young learners?

The selected words name distinctions that arise in understandable tasks: a part, a movement, a measurement, a change or a reason. Technical precision here means knowing which feature matters. A child can understand a tab, a fold or a replacement through a concrete example without needing an adult engineering course. More formal entries remain optional supported extensions.

Does the child have to build every model?

No. The activities can be read, discussed, acted out with prepared pieces or answered orally. Paper models are a context for meaning, not a manual-skill entrance test. Adults should prepare any cuts or slots and use the safe, light-material limits described at the beginning. The child-facing language task can be adapted without abandoning its central distinction.

Should the child use all the words in one composition?

No. A word earns its place by helping the reader. An accurate description using base, fold and because can be more informative than a paragraph crowded with terms the writer cannot explain. Use a few relevant words naturally, then revise the actual gaps in the message rather than impose an arbitrary vocabulary quota.

Is there a separate PDF or worksheet download?

This public edition is a complete web-based text-and-links reference. It includes the word bank, original cases, questions and explained answers on the page. It does not claim to include an attached PDF. Select a short section for teaching instead of treating the entire longform as one worksheet to finish.

How do we know the words are becoming useful?

Look for accurate use in a changed context after the original example is no longer displayed. Can the learner distinguish width from height on a different object, or explain replacement without copying the model sentence? Record the support needed and the actual response. One successful answer is encouraging evidence, not a guarantee that every use of the word is secure.

Continue through the existing vocabulary library

For a broad starting bank rather than this project-specific application, use the existing Primary 2 Vocabulary Words page and Grade 2 Vocabulary Lists. The Vocabulary Article Directory connects the wider collection. This paper-engineering workbook adds an applied route; it does not replace the general owners.

For the broader idea of language across projects, continue to Project Vocabulary: Helping Primary 2 Students Explain What They Are Making and Learning. For subject-wide vocabulary, use the existing Primary 2 mathematics vocabulary guide and Primary 2 science vocabulary guide. Those pages have broader subject coverage than the selected model-making meanings taught here.

For a method of moving from recognition to independent use, visit the eduKate Vocabulary Learning System. When the difficulty is understanding a task command, the existing Primary 2 Instruction and Task Words provides a more focused route. For organising procedural sentences, SETC’s Write Instructions and Simple Explanations in Clear Sequence develops that reader job separately.

Sources, scope and what this collection does not claim

The NGSS kindergarten–Grade 2 engineering design page provides one curricular reference for defining simple problems, representing solutions and comparing designs. It does not prescribe these hundred headwords or establish that all national Primary 2 programmes are identical. Science Buddies’ engineering design process guide provides an adult reference for thinking about design, testing and revision. The activities and examples here are original rather than copied project instructions.

The two IES guides and the PBS teaching illustration are linked where their specific relevance is discussed. They support bounded background principles or practical examples, not a guaranteed outcome from this article’s exact word selection. The fictional characters, measurements, trial records and answer explanations are teaching constructions. They are not testimonials, published experimental findings or predictions of a child’s examination performance.

When a use is disputed, retain the full sentence and identify the relevant sense. Card can name a material or a message object; record can name information or the action of preserving it; condition can name an object’s state or a circumstance of a test. Check the intended relationship before replacing the word. A remembered synonym is useful only when it fits the actual sentence.

Finish with one explanation that another person can use

Choose one simple model or fictional case. Name its purpose. Identify the part that matters. Describe a change and give the observation that supports your account. Maren checks the organisation, Iona checks the reference and scope, and Leonie checks whether the next action is clear.

The aim is not to make a young learner sound like an adult specialist. It is to help the learner say, “The opening was too narrow. We widened it because the card bent. In the retest, the same card fitted without bending.” Three understandable sentences can carry precise vocabulary, a reasoned revision and an honest result.