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Wrapping Presents
Age 7 to 11
Challenge Level 
Choose a box and work out the smallest rectangle of paper needed to wrap it so that it's completely covered.
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Geoboards
This practical challenge invites you to investigate the different squares you can make on a square geoboard or pegboard.
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How many ways can you find of tiling the square patio, using square tiles of different sizes?
Pebbles
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?