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Zig-zag roller Activity

by David, 14 October 2021 | 0 comments

Two cardboard shapes held together with tape, one green, one white.

This weird, wonderful shape is called a sphericon and it has a strange way of rolling. It wiggles back and forth as it trundles downhill!

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Levitating card Activity

by David, 5 September 2019 | 0 comments

Man blowing through a cotton reel.

Normally, when you blow on a piece of card, it flies away. But in this activity, you can blow to pull the card towards you with the science of air pressure!

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