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Players pass pieces to other team members in order to help one another complete their rectangle.
Use an observer to check that the team obeys the rules and offer one of the hint cards if, after a period of five minutes, the team is not making any progress.
This practical challenge invites you to investigate the different squares you can make on a square geoboard or pegboard.
How many ways can you find of tiling the square patio, using square tiles of different sizes?
Place four pebbles on the sand in the form of a square. Keep adding as few pebbles as necessary to double the area. How many extra pebbles are added each time?