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

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

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Multilink Cubes

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

Seven Flipped

Age 7 to 11 Challenge Level:

Does the position of the mats you turn over in your first go matter?
What will the mats look like just before you can make the last move?
Perhaps you could try with smaller numbers of mats before you go on to more than seven mats.