Lesson 5

Addition Strategies Practice

Est. Class Sessions: 2–3

Write the following addition facts on the board.

5 + 6 8 + 7 8 + 9 9 + 6 9 + 5

Ask:

What facts might help you solve 5 + 6?
(5 + 5 or 6 + 6)
How can you use that fact? (Possible response: I know 5 + 5 so 5 + 6 is one more or 11; I know 6 + 6 so
5 + 6 is one less.)

Ask students to choose one of the other problems on the board and name a fact that would help them solve the addition problem.

After a few minutes ask a few students to share the known fact and strategy for solving each problem on the board. See Figure 5.

Which addition facts were helpful? (doubles and ten facts and being able to name facts one more or one less)
Which addition facts do you need to work on first then? (ten facts, doubles, and one more or one less)

Adventure Book:

Student Activity Book:

Master:

Strategies and tools to reason from known facts

Lesson 5