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Muscles and movement
How muscles move us by pulling, why they work in pairs, the three kinds of muscle, what happens when muscles get tired, how a muscle fibre contracts, where the energy comes from, and why the biceps pulls much harder than the load it lifts. Three ages, each with a text, an experiment, a game, a quiz, a printable worksheet and a teacher sheet.
Ages 6–7My musclesHow muscles pull on bones to move you, why they work in pairs, and the muscles that work all by themselves. With a feel-your-muscles experiment.Ages 10–11Muscles: three kinds, pairs and tirednessSkeletal, smooth and cardiac muscle, voluntary and involuntary, muscle pairs, tendons and what happens when a muscle gets tired. With a clothes-peg fatigue fair test.Ages 15–16Muscle contraction, energy and forcesFrom muscle to sarcomere, the sliding filament model, calcium and ATP, the ATP sources and fatigue, and why the biceps force is many times the load. With a fatigue and recovery investigation.