PSLE Science Topics
All 24 topics from the Singapore MOE Primary Science syllabus, organized by level. Pick a topic to see its games and start earning points.
Explore by theme
Revising? Follow one of the five syllabus themes step by step, from easy to advanced.
🌱 Primary 3 · P3
Diversity of Living and Non-living Things
What makes something alive? Observe the world around you, and discover what living things need and what living things can do.
Classification of Living Things
Compare plants and animals, then sort living things — including fungi and bacteria — into groups by their similarities and differences.
Diversity of Materials
Explore wood, metal, ceramic, rubber, glass, plastic and fabric, and discover how their properties decide what they are used for.
Life Cycles of Plants
What is a life cycle? Follow a seed as it sprouts into a seedling and grows into an adult plant that makes seeds of its own.
Life Cycles of Animals
Compare the life cycles of animals like butterflies, frogs, chickens and mosquitoes — some young look like their parents, others change completely.
Properties of Magnets
What is a magnet? Find its strongest parts, see like poles repel and unlike poles attract, and watch a hanging magnet point North-South.
Making and Using Magnets
Make your own magnet by stroking steel or using electricity, then spot the magnets hiding in everyday things around you.
🌿 Primary 4 · P4
Plant System
A plant is a system: roots, stem and leaves each have a job. Find out what every part does, and how the same parts look different across plants.
Human Systems
Meet the systems that run your body, then follow your food through the digestive system — mouth, gullet, stomach and intestines — step by step.
Matter
Learn what matter is, the different states of matter around us, and how to measure the mass and volume of solids, liquids and gases.
Light
Where does light come from, and how does it help us see? Discover light sources and how light bouncing off objects reaches our eyes.
Shadows
What is a shadow, and why does it form? Explore how light travels in straight lines and what changes a shadow's size and shape.
Heat
What is temperature, and how is it different from heat? Measure with thermometers and discover the heat sources around you.
Effects of Heat
Follow heat as it flows from hot to cold — faster through some materials than others — and see how gaining or losing heat changes things.
🚀 Primary 5 · P5
Reproduction in Animals and Plants
From pollination to seed dispersal, and how a new human life begins — discover how living things reproduce and pass on their traits.
Cycles in Water
Follow water as it melts, evaporates, condenses and freezes, and learn why the water cycle gives us a constant supply of fresh water.
Plant Transport System
Discover the tiny tubes inside a plant: one set carries water from the roots, another carries food from the leaves.
The Human Respiratory and Circulatory Systems
Take a breath and follow the oxygen: through your nose, windpipe and lungs, then around your whole body in the blood.
Electrical Systems
What is a simple electric circuit? Build one with a battery, wires and a bulb, test conductors and insulators, and draw circuit diagrams.
Simple Series and Parallel Electric Circuits
Add batteries and bulbs in series or parallel and see how the current changes — then learn to use electricity safely and wisely.
🎓 Primary 6 · P6
Photosynthesis
Where does the energy in living things come from? Uncover how green plants use sunlight, water and carbon dioxide to make food.
Interaction of Forces
A force is a push or a pull. See how friction, gravity, magnets and springs start, stop, speed up and reshape the things around you.
Interactions Within the Environment
What makes up an environment? Explore habitats, build food chains and webs, and discover how organisms interact to stay alive.
Surviving in the Environment
How do living things survive so well where they live? Discover clever adaptations — and how human actions help or harm the environment.