Less Than ZeroBook - 2003
Perry the Penguin needs 9 clams to buy an ice scooter -- but he's not very good at saving. As Perry earns, spends, finds, loses, and borrows clams, a simple line graph demonstrates the concept of negative numbers.
Publisher: New York : HarperCollins, 2003.
Branch Call Number: Z MUR
Characteristics: 33 p. : col. ill.