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This activity investigates how you might make squares and pentominoes from Polydron.

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

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Cereal Packets

How can you put five cereal packets together to make different shapes if you must put them face-to-face?

Cut and Make

Stage: 2 Challenge Level: Challenge Level:1

Why do this problem?

This problem is based on the popular Tangram activities. It may help to extend pupils' concepts of triangles and it will encourage them to use visualisation.

Key questions

How have you done this?
What have you tried so far?
How could you join these two shapes? Where could the third piece go?

Possible extension

Take a large square and cut it up into a variety of shapes, for example:
These are the classic tangram pieces and there are many interactive tangrams on NRICH in the World of Tan series.

Possible support

Plastic or card shapes would be helpful.