Explore inquiry, diversity, cycles, systems, energy and interactions through observation and evidence. This reader-friendly shelf now contains 137 focused Primary Science learning guides. The original 120-guide six-area scaffold is preserved below, followed by a 17-guide current-syllabus completion layer added through curriculum equalisation and gap repair.
You are here: Complete Primary Science Reference Shelf. Browse all 137 guides below by scientific learning area. If you are teaching or studying by school year, use the course route instead.
Teach by school year → Primary Science Course & Contents | Read why we built it → Instruction Manual | Browse all 137 below ↓
Return to the Singapore Learning Library to explore other subjects.
Browse by learning area
Scientific inquiry (20 guides)
- Asking a Testable Science Question
- Distinguishing Observation from Inference
- Making Careful Scientific Observations
- Using Fair Comparisons in an Investigation
- Identifying the Factor Being Changed
- Identifying the Outcome Being Observed
- Keeping Other Relevant Conditions the Same
- Recording Observations in a Clear Table
- Using Simple Measurements in Science
- Recognising Patterns in Scientific Results
- Making a Prediction with a Reason
- Explaining Results Using Evidence
- Drawing a Labelled Scientific Diagram
- Distinguishing Evidence from a Guess
- Repeating an Investigation to Check Results
- Communicating Scientific Findings Clearly
- Recognising the Limits of a Simple Investigation
- Using Scientific Vocabulary Precisely
- Reading a Simple Science Data Display
- Staying Safe During Everyday Science Activities
Diversity (20 guides)
- Distinguishing Living and Non-Living Things
- Recognising the Basic Needs of Living Things
- Grouping Animals by Observable Characteristics
- Grouping Plants by Observable Characteristics
- Recognising Mammals and Their Characteristics
- Recognising Birds and Their Characteristics
- Recognising Fish and Their Characteristics
- Recognising Insects and Their Body Parts
- Recognising Flowering and Non-Flowering Plants
- Comparing Plant Roots Stems and Leaves
- Understanding Why Classification Needs Clear Criteria
- Comparing Organisms Within the Same Habitat
- Recognising Differences Between Materials
- Grouping Materials by Observable Properties
- Choosing Materials for a Practical Purpose
- Understanding Flexibility as a Material Property
- Understanding Hardness as a Material Property
- Understanding Transparency as a Material Property
- Connecting Material Properties to Everyday Objects
- Respecting Biodiversity in Singapore Environments
Cycles (20 guides)
- Understanding the Life Cycle of a Butterfly
- Understanding the Life Cycle of a Frog
- Understanding the Life Cycle of a Mosquito
- Comparing Animal Life Cycles
- Understanding the Life Cycle of a Flowering Plant
- Recognising Conditions Needed for Seed Germination
- Understanding How Seeds Are Dispersed
- Connecting Flowers Fruits and Seeds
- Understanding Evaporation in the Water Cycle
- Understanding Condensation in the Water Cycle
- Understanding Rainfall and Water Collection
- Explaining the Water Cycle as a Connected System
- Recognising Changes of State in Water
- Understanding Melting and Freezing
- Understanding Boiling and Evaporation
- Comparing Reversible and Irreversible Changes Carefully
- Tracking Changes Across Repeated Natural Cycles
- Connecting Life Cycles to Environmental Conditions
- Explaining Why Stagnant Water Encourages Mosquito Breeding
- Connecting the Water Cycle to Singapore Water Security
Systems (20 guides)
- Understanding the Human Digestive System
- Tracing Food Through the Digestive System
- Understanding the Human Respiratory System
- Explaining Why Breathing Supports the Body
- Understanding the Human Circulatory System
- Connecting Heart Blood and Blood Vessels
- Comparing Body Systems and Their Functions
- Understanding Plant Transport Systems
- Explaining How Roots Absorb Water
- Explaining How Stems Transport Water
- Understanding the Role of Leaves in Plants
- Recognising the Main Parts of a Flower
- Understanding How Muscles and Bones Support Movement
- Understanding a Simple Electrical Circuit
- Identifying Circuit Components and Their Functions
- Recognising an Open and Closed Circuit
- Comparing Conductors and Insulators
- Understanding How Switches Control a Circuit
- Representing a Circuit with a Simple Diagram
- Comparing Systems by Their Parts and Functions
Energy (20 guides)
- Recognising Common Forms of Energy
- Understanding Light as a Form of Energy
- Understanding Heat as a Form of Energy
- Understanding Sound as a Form of Energy
- Understanding Electrical Energy in Everyday Devices
- Recognising Energy Changes in Familiar Situations
- Understanding How Shadows Are Formed
- Comparing Transparent Translucent and Opaque Materials
- Recognising How Light Travels
- Understanding Reflection in Everyday Contexts
- Understanding How Heat Affects Materials
- Comparing Hotter and Cooler Objects Safely
- Recognising How Heat Can Transfer Between Objects
- Understanding Sound as Vibrations
- Comparing Loud and Soft Sounds
- Understanding Magnets and Magnetic Materials
- Recognising Magnetic Attraction and Repulsion
- Explaining How Food Provides Energy for Living Things
- Understanding Why Plants Need Light
- Connecting Energy Use to Everyday Conservation
Interactions (20 guides)
- Understanding Pushes and Pulls as Forces
- Recognising Friction in Everyday Situations
- Understanding How Gravity Affects Falling Objects
- Comparing Stronger and Weaker Forces
- Explaining How Forces Change Motion
- Understanding Simple Food Chains
- Recognising Producers and Consumers
- Tracing Energy Through a Simple Food Chain
- Understanding Predator and Prey Relationships
- Recognising Competition for Resources
- Explaining How Living Things Respond to Their Environment
- Understanding Plant Adaptations in Familiar Habitats
- Understanding Animal Adaptations in Familiar Habitats
- Comparing Habitats and Their Conditions
- Recognising Human Effects on the Environment
- Understanding Why Conservation Matters
- Connecting Waste Reduction to Resource Protection
- Explaining Why Clean Water Supports Healthy Communities
- Recognising Interdependence in an Ecosystem
- Using Evidence to Explain an Environmental Change
Current-syllabus completion layer (17 guides)
The six learning areas above preserve the original 120-guide scaffold. The guides below were added later to close verified gaps against the current Singapore Primary Science syllabus. They extend the shelf without changing the ownership of the original 120 pages.
Primary 3 — Diversity and Materials (6)
- Recognising Fungi and Bacteria as Living Things
- Recognising Amphibians as a Broad Animal Group
- Recognising Reptiles as a Broad Animal Group
- Understanding Strength as a Material Property
- Comparing Whether Objects Float or Sink in Water
- Understanding Waterproofness as a Material Property
Primary 3 — Life Cycles (4)
- Understanding the Life Cycle of a Chicken
- Understanding the Life Cycle of a Cockroach
- Understanding the Life Cycle of a Grasshopper
- Understanding the Life Cycle of a Beetle
Primary 3 — Magnets (3)
- Understanding Why a Freely Suspended Bar Magnet Points North–South
- Recognising Everyday Uses of Magnets
- Making a Magnet by the Stroke and Electrical Methods
Primary 4 — Matter (3)
- Understanding Matter as Anything That Has Mass and Occupies Space
- Comparing Solids, Liquids and Gases by Shape and Volume
- Measuring Mass and Volume in Primary Science
Primary 6 — Forces (1)
Provenance rule: the original 120-guide shelf remains intact; this completion layer records later gap-filling rather than silently rewriting the history of the library.
Choose the next useful step
Begin with the learner’s current question and check school feedback. Use the explanation, worked example and practice prompt in one guide before choosing a related topic.
Topic placement, current examination arrangements and expected depth depend on the learner’s school programme, cohort and applicable official syllabus.