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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?

Teddy Town

Age 5 to 14 Challenge Level:

You could use counters or pieces of coloured card if you don't have teddies.
Have you checked your combinations are all different?