Grade 3 Teacher Guide
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Learning Progression
Unit Overview
Lesson 1
Lesson 2
Lesson 3
Lesson 4
Lesson 5
Lesson 6
Lesson 7
Lesson 8
Ask a student to show how to solve each problem using the class number line. Emphasize strategies that involve using tens or making tens.
I switch the 8 and 4 so I can add 16 + 4. I know 6 + 4 = 10, so 16 + 4 = 20. 20 + 8 = 28.
Ongoing Assessment
Use DPP Task L to assess students' abilities to use the using-tens strategy to solve an addition problem [E5].
Use mental math strategies to solve the following.