Eleven colorful birds fly through a tree in this Sesame Street video. The eleven birds rearrange themselves into different groups. For example, they fly through the tree and then land in a group of 10 and 1. Then they fly again and land in a group of 8 and 3 and so on. This illustrates how many different combinations can make up 11. This could be shown to anyone starting to understand the concepts of addition and subtraction to illustrate the many combinations of eleven.