Everything you need to understand or teach Alan Mendelsohn, the Boy from Mars by Daniel Pinkwater.
Alan Mendelsohn, the Boy from Mars, conjures two boys out of ink marks who become involved in an amazing adventure, a story so amusing and laughter-filled that it is one of Pinkwater's funniest books. It begins with the mundane and ends in the extraordinary. A "portly" kid does not get along with his school mates, but school becomes more fun when he is befriended by an unusual young man; then he visits a strange bookstore and unleashes the forces of the cosmos.
Pinkwater, as he does in many of his novels, invites us to look beyond the ordinary and discover the amazing.