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Cuisenaire Rods

These squares have been made from Cuisenaire rods. Can you describe the pattern? What would the next square look like?

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Making Boxes

Cut differently-sized square corners from a square piece of paper to make boxes without lids. Do they all have the same volume?

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A Right Charlie

Can you use this information to work out Charlie's house number?

Augustus' Age

Stage: 2 Challenge Level: Challenge Level:2 Challenge Level:2

This famous puzzle requires you to use the information to limit your search. We know when De Morgan died, so when he was born wasn't hundreds of years before, was it?! That helps you think about what would be reasonable for $x$ and $x^2$.

Why not try an age and see what happens?

Remember that $x^2$ means $x \times x$.