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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?

Crack the Code

Age 7 to 11 Challenge Level:

What could the one-letter words be?
What might you write for your friend in a birthday card?