Play this game to learn about adding and subtracting positive and negative numbers
This article suggests some ways of making sense of calculations involving positive and negative numbers.
Imagine a very strange bank account where you are only allowed to do two things...
Investigate different ways of making £5 at Charlie's bank.
In this game the winner is the first to complete a row of three. Are some squares easier to land on than others?
Different combinations of the weights available allow you to make different totals. Which totals can you make?