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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?

Broken Toaster

Age 7 to 11 Short
Challenge Level
Is there a way to make sure both 'slots' of the toaster are always being used?