1. Explain 2 ways to use doubles to help you figure out 7+8
2. Explain 3 ways to use doubles to help you figure out 9+7
3. For each of these math fact problems, tell whether it is
a. 5+7
b. 8+8
c. 9+4
d. 6+5
e. 8+4
4. Describe the facts for which a use doubles strategy is efficient
5. Write a word problem for introducing the use doubles to add strategy.
6. Describe in words how to use a Make 10 strategy to solve 9+7.
8. Illustrate using a 10-frame how to use a Make 10 strategy to solve 9+7.
9. Illustrate using an open number line how to use a Make 10 strategy to solve 9+7.
10. For what addition facts is the make 10 strategy efficient?
11. What must the addends and the sum be like in order for it to be possible to use a make 10 strategy to solve the addition fact?
12. Write a word problem appropriate for introducing the make 10 strategy.