FREE LEARNING SERIES
Science from the foundations
Understand experiments, solve motion and energy problems, and explain how ecosystems work.
3 lessons · Beginner · Learn at your own pace
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Learn, practise, explain
Try the exercise before reading its explanation. Answer the self-check questions in your own words, then compare your reasoning with the answers. Revisit any difficult section before moving on. No account or payment is needed.
- 01
Scientific thinking: experiments, measurements and evidence
Why does a fair test matter? Learn how variables, repeated measurements and alternative explanations turn a sensible guess into a conclusion you can defend.
Learning outcome: You will turn a broad curiosity into a testable question, plan a fair comparison, and distinguish a result from the explanation offered for it.
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Motion, force and energy: explanations and solved examples
Follow a walk, a trolley and a lifted schoolbag to understand distance, velocity, force, work and energy. Calculate each quantity and learn why familiar words have precise meanings in physics.
Learning outcome: Calculate distance, displacement, speed, net force and simple work; explain balanced forces and energy transfers.
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Ecosystems: food webs, energy flow and nutrient cycles
A pond or garden works through connections between organisms, water, air and soil. Learn how food is produced, energy is transferred, materials are recycled and changes can spread through a food web.
Learning outcome: Explain a food web, distinguish energy flow from nutrient cycling and predict possible effects of a habitat change.
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