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


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?

Seeing Squares

Age 5 to 11
Challenge Level

How are you deciding where to go?
Where is a good place to start? Why?