The array can be shown as 5 groups of 3 showing that 5 x 3 = 15. Or it could be shown as 3 groups of 5 showing that 3 x 5 = 15. This demonstrates that multiplication is commutative. Image caption, ...

This is a preview. Log in through your library . Abstract We examine whether the array representation can support children's understanding and reasoning in multiplication. To begin, we define what we ...