Using the analogy of children jumping into a swimming pool, the clip details how 1 plus 4 and 4 plus 1 both equal 5.

First broadcast:
10 September 2007

Using large number lines, the children can roll a dice and jump to that number. They can then work out what they need to add to get to target numbers. Pupils can make target numbers using different concrete objects such as balls, pencils and pens before splitting them into groups. Toy animals can be used to demonstrate number bonds before children write them down.