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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?

Possible Pieces

Age 5 to 11 Challenge Level:
How are you making sure you do not make any the same?

Here is a picture of the kind of jigsaw the problem is based on, in case you are not familiar with jigsaws.  (This is just an example, this particular picture will not necessarily help you answer the challenges!)