Young rabbit can't understand why Mom is buying so many bags of peanuts and cans of worms at the grocery store when everybody knows carrots are a whole lot tastier. Horse, he notices, has more carrots in his cart, while Elephant has fewer, though Bird has the same amount. H'mmmm… Could Mom be planning a party?

To formulate addition and subtraction equations involves being able to identify "more," "fewer" and "the same."