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Geoboards

This practical challenge invites you to investigate the different squares you can make on a square geoboard or pegboard.

Polydron

This activity investigates how you might make squares and pentominoes from Polydron.

Multilink Cubes

If you had 36 cubes, what different cuboids could you make?

Elf Suits

Age 7 to 11
Challenge Level
What outfits are possible with the red trousers, for example?
How do you know you've found them all?
What outfits can there be all with blue trousers ... green trousers ...?