Less Than Zero (MathStart: Negative Numbers, Level 3)

Less Than Zero (MathStart: Negative Numbers, Level 3)
sku: COM9780060001261NEW
$5.39
Shipping from: Canada
   Description
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.
   Price history chart & currency exchange rate

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