Less Than Zero
Auteur : Stuart J. Murphy
Date de publication : 2003-08-14
Éditeur : HarperCollins
Nombre de pages : 40
Résumé du livre
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.