Less than Zero Mathstart
Less than Zero
Less than Zero Mathstart
Less than Zero
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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. Stuart shows kids that they use math every day—to share a pizza;spend their allowance;and even sort socks. And kids start to see the fun in math!

Common Core Alignment:

1.OA.D.7 Understand the meaning of the equal sign, and determine if equations involving addition and subtraction are true or false.