OA Standard #3 (1.OA.3)

3. Apply properties of operations as strategies to add and subtract. [Students need not use formal terms for these properties.] Examples:  If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 = 2 + 10 = 12. (Associative property of addition.)

WEB RESOURCES

Finding Addition Patterns Lesson

DOCUMENT RESOURCES

Domino Fact Families Activity

MOBILE RESOURCES

IWB RESOURCES