If you haven't read this book yet it will probably be the funnest book you will ever read!! I won't ruin this story for you, but the rhyming and poem like structure of the book is unreal! I thoroughly enjoyed reading this as an adult and I can't imagine how a classroom full of children will react! I would use this book to teach about attitude and how quick a negative attitude can spread to others! I could also use this book for teaching rhythmic pattern and rhyming words when it comes to poetry and songs! I would use this book any where from Kindergarten to 3rd grade!