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Cubes

Investigate the number of faces you can see when you arrange three cubes in different ways.

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I'm Eight

Find a great variety of ways of asking questions which make 8.

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Let's Investigate Triangles

Vincent and Tara are making triangles with the class construction set. They have a pile of strips of different lengths. How many different triangles can they make?

Number Balance

Age 5 to 7 Challenge Level:

If a weight on the $10$ hook balances with a weight on the $2$ hook together with a weight on the $8$ hook, can you see how the balance works?
How can you tell from the pictures or interactivity which side is lighter?