No.232
Paper-Helicopter Spin Comparison
Japanese name: 紙コプターの回転くらべ
Materials
- Several adult-made paper helicopters of the same shape but different sizes
- Paper for recording observations
- A timer, if needed
How to play
- Prepare the paper helicopters and agree on one release height, such as chest level. Take turns releasing them while standing on the floor; never climb on tables or chairs.
- One person lightly holds the end of the body, then opens their fingers without throwing. Others stand a little back and observe the direction of spin and the descent.
- Test the same helicopter three times, then switch to another size. If it does not spin, ask an adult to check whether its blades have folded shut.
- After everyone has tried, identify shapes that fell slowly or spun well. Primary school children may time drops from the same height.
- Change just one feature, such as how far the blades open, and test again. Compare before and after, then finish by sharing one discovery each.
Ways to adapt
Preschool children: ready-made models. Younger primary school children: compare sizes. Older primary school children: change one condition.