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

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

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Tangram Paradox

How can the same pieces of the tangram make this bowl before and after it was chipped? Use the interactivity to try and work out what is going on!

Jomista Mat

Age 7 to 11 Challenge Level:

Why not look at this picture with a friend and talk about what you see together?
To make the mat, you'll need to start with one large sheet of paper. Can you see which colour this background sheet is in the picture?
Now look at how you could make the other patterns.