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Cuisenaire Squares

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

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?

A Right Charlie

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

Seven Square Numbers

Age 7 to 11 Challenge Level:

Make a list of squares of the relevant numbers. Remember that $1$ is a square number.