Strategies15

• LESSON 1

• Addition Strategies16

  True or False?

  Find the Missing Numbers

• LESSON 2

• Strategies for Making Tens19

  Switching Numbers

  Breaking Addends into Parts

  Number Sentences

• LESSON 3

• Spinning Sums21

  Most Common Sum

• LESSON 4

• Magic Squares24

  Yu the Great: A Chinese Legend

  Use Strategies and Patterns

• LESSON 5

• Subtraction Facts Strategies40

  Suzanne and John's Sample Game

  Fact Families

• LESSON 6

• Spinning Differences46

• LESSON 7

• Workshop: Reasoning from Known Facts47

• LESSON 8

• Assessing the Subtraction Facts49