Use your addition and subtraction skills, combined with some strategic thinking, to beat your partner at this game.

This interactivity allows you to sort logic blocks by dragging their images.

In this investigation, you are challenged to make mobile phone numbers which are easy to remember. What happens if you make a sequence adding 2 each time?

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

This challenge asks you to investigate the total number of cards that would be sent if four children send one to all three others. How many would be sent if there were five children? Six?

Dicey Operations for an adult and child. Can you get close to 1000 than your partner?

Can you find ways of joining cubes together so that 28 faces are visible?

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

How can you arrange the 5 cubes so that you need the smallest number of Brush Loads of paint to cover them? Try with other numbers of cubes as well.

Investigate the different ways these aliens count in this challenge. You could start by thinking about how each of them would write our number 7.

There are nasty versions of this dice game but we'll start with the nice ones...