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Overarch 2

Bricks are 20cm long and 10cm high. How high could an arch be built without mortar on a flat horizontal surface, to overhang by 1 metre? How big an overhang is it possible to make like this?

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High Jumping

How high can a high jumper jump? How can a high jumper jump higher without jumping higher? Read on...

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A cone is glued to a hemisphere. When you place it on a table in what position does it come to rest?

Pole Vaulting

Stage: 5 Challenge Level: Challenge Level:1

This investigative task can be approached at various levels, and there is no specific 'solution' as such.