Try entering different sets of numbers in the number pyramids. How does the total at the top change?
Alison, Bernard and Charlie have been exploring sequences of odd and even numbers, which raise some intriguing questions...
What happens if you join every second point on this circle? How about every third point? Try with different steps and see if you can predict what will happen.
In how many different ways can you break up a stick of seven interlocking cubes? Now try with a stick of eight cubes and a stick of six cubes. What do you notice?
