Gumballs : A Mr. and Mrs. Green Adventure, Paperback by Baker, Keith, ISBN 0544236092, ISBN-13 9780544236097, Brand New, Free shipping in the US

Combines a lighthearted storyline and confidence-building text in the story of an affable alligator couple that uses luck and math skills to guess how many gumballs are in a giant gumball machine. By the author of Hide and Snake. Simultaneous. 10,000 first printing.