If you can add, subtract and multiply, you'll be able to investigate square numbers and discover some famous results.

What is special about numbers that can be written as the difference of two squares?

What happens when you add powers of numbers together? Charlie and Alison have been exploring. Can you explain their findings?

Charlie has been colouring in square numbers and sums of squares on different grid. There are interesting patterns to explore and explain...

Sets of integers like 3, 4, 5 are called Pythagorean Triples, because they could be the lengths of the sides of a right-angled triangle. Can you find any more?