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Construct-o-straws

Make a cube out of straws and have a go at this practical challenge.

Matchsticks

Reasoning about the number of matches needed to build squares that share their sides.

Little Boxes

How many different cuboids can you make when you use four CDs or DVDs? How about using five, then six?

Part the Polygons

Age 7 to 11 Short Challenge Level:

Using three straight lines divide this rectangle into four parts.
Each part must contain a triangle, a rectangle, a pentagon, a hexagon, a cylinder and an oval.