Understanding a system includes seeing how its parts affect one another. A garden has plants, soil, water and people making decisions. A delivery involves goods, places, transport and information. These words give you ways to discuss the connections without demanding a complete explanation at once.

Begin with a question that belongs to the situation: “Why might this leaf have changed colour?” or “What could delay this delivery?” Introduce the word when it gives your child something useful to say. These sixteen selections provide a manageable route into the full bank.

The photosynthesis meaning follows NASA’s explanation of the carbon cycle. The other examples are suggested starting points. Ask for a drawing, action or explanation in your child’s own words; reciting the table is unnecessary. For help establishing a first meaning, use eduKate’s guide to helping a child understand a new word.

Look at a familiar garden together, or use a clear photograph. Choose one plant and describe what you can actually see. “Two leaves look yellow” keeps the observation separate from a suggested explanation such as “It needs more water”. A hypothesis gives you an explanation to investigate.

Ask for another possibility before choosing an action. The Royal Horticultural Society’s houseplant guidance explains that yellowing can have several causes, including too much or too little water; an occasional older leaf may also yellow naturally. This guidance illustrates the need for context. It does not diagnose a particular school garden plant.

Your next question can be practical: “Who knows how this plant has been cared for?” Ask the gardener or teacher what the plant is, when it was watered and whether the change is unusual. Looking, asking and checking records are all possible contributions. There is no need to alter a living plant to create an experiment.

Then make a simple model of one connection. Draw a plant, sunlight, water and air. NASA describes how plants use sunlight’s energy to combine water and carbon dioxide into sugars, releasing oxygen. Add the label photosynthesis to that process. The drawing leaves out much detail, but it connects a new word with familiar things.

Ask what your picture helps explain and what it cannot tell you. It shows something about how a plant makes food. It cannot identify the cause of this particular yellow leaf. Naming that limitation keeps the model useful.

Save one question for another visit. A dated photograph or a note from the person caring for the garden gives you something to compare. Your child can then say what changed in their explanation, and which information made the difference.

Sketch three familiar places, such as home, a park and a library. Join them with the routes you know. Explain that each mark is a representation: a small shape stands for a building, and a line stands for a route. The drawing is a model made for a purpose.

Invite your child to plan an imaginary journey with someone pushing a buggy. What information would they need? A crossing, steps or a suitable entrance might matter more than the colour of a building. Add the useful details and discuss the priority behind each addition.

Introduce a change: imagine that one entrance is temporarily closed. Keep the original drawing beside the revised version. Ask your child to explain the new route and the reason for changing it. An update should respond to information, rather than simply make the map look different.

Now ask someone else to follow the directions with a finger. Where do they hesitate? Their report gives you feedback. Perhaps two turns look identical, or the library symbol needs a label. Agree on one improvement and try the directions again.

A sketch also has limits. The shortest-looking line does not establish the shortest real distance unless distances are represented consistently. A map of streets may leave out opening hours. Write one useful reminder beside the drawing: “Check the entrance” or “Check when the library opens”.

When discussing a real outing, an adult checks the current route and arrangements. The vocabulary conversation can stay focused on one question: “What must our model show for this decision?” Your child has a way to connect the picture, the available information and the person using it.

Choose an everyday object, such as a notebook. Build one possible supply route using labelled cards: factory, warehouse, delivery vehicle, shop and home. Call it a simplified, imagined route. The actual notebook may have travelled differently; check its packaging or ask the seller if you want to investigate that particular item.

Move a paper notebook along the cards. At each point, ask what must be available for the next step. The shop needs stock to sell. A delivery needs somewhere to go. Introduce infrastructure when you discuss the roads and other basic connections that make the imagined route possible.

Add a change: the warehouse cannot send this week’s delivery. Invite two possible consequences. A shop with remaining stock might keep selling notebooks for a while. A shop with none might ask customers to wait or offer an alternative. The effect depends on information your first diagram did not include.

Draw a small box beside the shop for stock already there. Your child has now revised the model to explain why the same delay could affect two shops differently. Ask, “What would we need to know before predicting that this shop will run out?”

Introduce interdependence through people as well as objects. In this example, customers rely on the shop for supplies, and the shop relies on customers buying goods. A single arrow showing a parcel moving in one direction does not show every relationship.

Finish with a decision the child can discuss: the preferred notebook is unavailable. Is the priority having something to write in today, or getting that particular design later? Both choices can have reasons. Trace one consequence of the chosen action, and leave room for information you do not yet have.

Read this original fictional passage aloud together. It gives you a small problem to examine without needing specialist background knowledge.

Mina found water on the library table beside an open window. The floor beneath the window was dry. A vase lay on its side, with flowers scattered beside it. The librarian said the vase had been upright before the delivery trolley passed. Mina first thought that rain had come through the window. She looked again at the table.

Ask, “What is one explanation for the water?” Rain is a possibility suggested by the window. Water spilling from the vase is another. Invite your child to point to details that support each explanation. The fallen vase gives the spill explanation more support than the open window alone gives the rain explanation.

Next ask what remains unknown. The passage does not tell us who or what tipped the vase. The trolley passed before the discovery, but that sequence alone does not show that it caused the spill. Uncertainty can be precise: “The water probably came from the vase, but we do not know what knocked it over.”

The librarian’s statement is testimony within the story. It helps establish when the vase was last seen upright. It does not establish every event that happened afterwards. Ask what additional observation would help clarify the sequence.

Now imagine a reader returns and says, “I tipped the vase while reaching for a book.” Discuss which part of the explanation this new account supports and which questions it leaves open. Say, “This new detail gives us a reason to update our account.”

Invite a two-sentence response: one sentence for the best-supported explanation, and one for a remaining question. Supply the words your child needs. The purpose is to connect an explanation with specific details and recognise its limits, without treating every possible answer as equally supported.

Find two dated photographs of a familiar place, or use family photographs that an adult is comfortable discussing. Arrange them in chronology, the order in which their events happened. If a date is missing, leave a space for the uncertainty instead of guessing with confidence.

Describe a visible change. Perhaps one photograph shows a small playground and another shows a larger one. Ask what the pictures establish. They show how the place looked from those positions at those moments. They do not, by themselves, explain who decided to change it or why.

A document, such as a dated notice announcing work, might help. Read who created it, when it was written and what it actually says. A plan announces an intention; another record may be needed to establish what eventually happened.

Ask a relative for their testimony about visiting the place. Compare the account with the pictures. A difference is a question to explore: perhaps the person is remembering another year or a feature outside the photograph. You can respectfully ask for details without dismissing the person.

Choose one claim to verify: “Was this photograph taken before the new playground opened?” Explain what information would help you check. The activity links words with a useful habit: building an account from records while making its remaining gaps visible.

The Education Endowment Foundation’s Key Stage 2 literacy guidance, intended for teachers of pupils aged seven to eleven, recommends purposeful discussion, explicit vocabulary teaching and opportunities to encounter and use words again. These classroom recommendations inform our suggested conversations. They do not validate this 200-word bank or guarantee gains from a particular household routine.

Choose two or three words connected with one situation. For a map, try model, limitation and feedback. Talk through the task, leave the drawing available and return when there is a reason to use it. There is no required daily word count.

• At the first encounter: explain the word briefly and show where it applies.
• At the next encounter: ask the child to explain one choice or identify a missing detail.
• In a different setting: discuss how a garden drawing is also a model, with its own purpose and limits.
• After new information: invite a revision and ask what prompted it.

If a child says every picture is a useful model for every purpose, test that idea gently. Would a photograph of the library’s entrance tell you which bus to take? It shows something valuable, but another representation is needed for that question.

Record a concrete observation if it helps: “Added the closed entrance after checking the notice.” That tells you more about this occasion than a permanent mastery label. Later, try an unfamiliar example with less help. eduKate’s guide to checking whether a vocabulary word has been learned offers further ways to look at recognition, recall, use and transfer.

Must an eight-year-old know all 200 words?

No. This list organises a series of new target words. Select words that help with a current interest or experience. A long word can be introduced through a concrete example, and it can also wait. The list is not a measure of intelligence, attainment or development.

How much science should I explain?

Begin with one accurate relationship that answers your child’s question. Use a drawing, then add details when they help. If a new question goes beyond your knowledge, look it up together. Avoid inventing an answer to keep the conversation moving.

What if my child offers an unlikely explanation?

Ask which detail led to it, then compare it with another explanation. Identify the information each would require. You can say that one currently has stronger support while acknowledging what remains unknown.

Can my child draw or speak instead of writing?

Yes. Use the format that makes the idea easiest to discuss. A labelled drawing, spoken account or arrangement of cards can give you something concrete to examine together. Writing can follow when it serves a purpose.

Why do familiar words from earlier ages appear in the explanations?

The target banks avoid repeating headwords to organise coverage. Ordinary language still needs familiar words. Keep revisiting earlier vocabulary and introduce later words whenever they become useful. On your next visit, choose another small cluster and connect it with a new question about the world.