Can you work out the arrangement of the digits in the square so that the given products are correct? The numbers 1 - 9 may be used once and once only....

If there are 3 squares in the ring, can you place three different numbers in them so that their differences are odd? Try with different numbers of squares around the ring. What do you notice?...

Five equations and five unknowns. Is there an easy way to find the unknown values?...

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

Can you complete this calculation by filling in the missing numbers? In how many different ways can you do it?...

In this activity, the computer chooses a times table and shifts it. Can you work out the table and the shift each time?...

The Tower of Hanoi is an ancient mathematical challenge. Working on the building blocks may help you to explain the patterns you notice....

A group of animals has made a seesaw in the woods. How can you make the seesaw balance?...

My local DIY shop calculates the price of its windows according to the area of glass and the length of frame used. Can you work out how they arrived at these prices?...

This problem is designed to help children to learn, and to use, the two and three times tables....