This story is from Eosop's fables.
Begin with a 2 line discussion of what is Unity. Unity means working together. Unity means cooperating with each other.
Mrs McKenzie has six sons, but they are always fighting amongst themselves, which makes it hard to get any work done. She shows them the error of their ways by asking each one in turn to snap a bundle of sticks in two. It is too difficult for any of them to snap the whole bundle, but when she unties the bundle and gives them one stick each to snap, it is easy. The sons realise the value of working together, and by doing so, win the top prize in a building competition.
