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

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Multilink Cubes

If you had 36 cubes, what different cuboids could you make?

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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?

Sealed Solution

Stage: 2 Challenge Level: Challenge Level:2 Challenge Level:2
What are the possible ways of making the numbers on the envelopes?
Which number has the fewest possible combinations? It might be worth starting from this envelope and looking at what could be in the others.