Less Than Zero: Negative Numbers (MathStart 3 Series)

“Kids, young and old, fall in love with math when they see how real-life and effortless it becomes thanks to these books.” —Kimberly D. Mueller, Ed.D., First Grade Teacher, Ashbrook School, Lumberton NJ

Less Than Zero is perfect for teaching negative numbers to second, third, and fourth graders. 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 negati...