The Giving Tree is a story about a tree and a boy, and as the boy grows the tree gives him new things. Eventually the tree give the boy all she has to offer, and the boy accepts it. This book is great for all ages but I would use it for first and second grade. The students could write a letter to the tree thanking it for all it did for the boy. They could also think of someone that gives them everything and write a letter to that person.