Objective: Understand and apply the Commutative Property of Addition for sums within 20.
Lesson 3.2-Count On
Objective: Use count on 1, 2, or 3 as a strategy to find sums within 20.
Vocabulary:
- Count on
Lesson 3.3- Add Doubles
Objective: Use doubles as a strategy to solve addition facts with sums within 20.
Vocabulary:
- Doubles
Objective: Use doubles to create equivalent but easier sums.
Lesson 3.5- Doubles Plus 1 and Doubles Minus 1
Objective: Use doubles plus 1 and doubles minus 1 as strategies to find sums within 20.
Vocabulary:
- doubles minus one
- doubles plus one
Objective: Use the strategies count on, doubles, doubles plus 1, and doubles minus 1 to practice addition facts within 20.
Lesson 3.7-Add 10 and More
Objective: Use a ten frame to add 10 and an addend less that 10.
Lesson 3.8- Make a 10 to Add
Objective: Use make a ten as a strategy to find sums within 20.
Vocabulary:
- make a ten
Objective: Use numbers to show how to use the make a ten strategy to add.
Lesson 3.10- Add 3 Numbers
Objective: Use the Associative Property of Addition to add three addends.
Lesson 3.11-Add 3 Numbers
Objective: Understand and apply the Associative Property or Commutative Property of Addition to add three addends.
Lesson 3.12- Use Addition Strategies
Objective: Solve adding to and putting together situations using the strategy draw a picture.
Chapter 3 Review
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