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.
Less Than Zero
$11.50 Price Excluding Tax
MathStart : Level 3 : Negative Numbers
Author: Stuart J Murphy
Publication date: 20 Apr 2016
Publisher: HarperCollins Publishers
Format: Paperback | 40 pages