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- How much does a door turn when it opens — and how do we measure a turn?Angles
- No organ works alone — so how does a mouthful of roti reach your toes as energy?Body systems and how they connect
- How do you draw an exact 60° angle with only a compass and a ruler?Measuring and constructing angles
- What is a typical value — and how can one number summarise a whole class?Data handling
- If the Moon goes round Earth every month, why isn't there an eclipse every month?Eclipses