Study Topics
Short, visual lessons that explain how things actually work — with diagrams, step-by-step animations and an interactive lesson you can play through. Free to read, no sign-in needed.
3 topics
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Photosynthesis
How green plants use sunlight, water and air to make their own food — and give us the oxygen we breathe.
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The Plant Cell
Inside every leaf are millions of tiny building blocks, each with its own walls, storage tanks and food factories.
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The Water Cycle
Where rain comes from, where puddles go, and why the water you drink today is the same water the dinosaurs drank.
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