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Eight children each had a cube made from modelling clay. They cut them into four pieces which were all exactly the same shape and size. Whose pieces are the same? Can you decide who made each set?

How many balls of modelling clay and how many straws does it take to make these skeleton shapes?

Mr Gilderdale is playing a game with his class. What rule might he have chosen? How would you test your idea?

These spinners will give you the tens and unit digits of a number. Can you choose sets of numbers to collect so that you spin six numbers belonging to your sets in as few spins as possible?

A group of children are using measuring cylinders but they lose the labels. Can you help relabel them?

The value of the circle changes in each of the following problems. Can you discover its value in each problem?

Choose a symbol to put into the number sentence.

Which is quicker, counting up to 30 in ones or counting up to 300 in tens? Why?

In this problem, we're investigating the number of steps we would climb up or down to get out of or into the swimming pool. How could you number the steps below the water?

Have a look at this data from the RSPB 2011 Birdwatch. What can you say about the data?