Make a number

This is an excellent game to teach kids addition. Give them some marbles (may be around 40). If you dont have marbles give them some dried beans. Get them to make a number in all the ways they can (using the marbles/beans). Example: For number 5 they have to place 3 and 2 marbles in one group, 2 and 3 in one group, 4 and 1 in one group AND 1 and 4 in one group.