## Deciding Which is Correct - Section 3: Independent Practice

Deciding Which is Correct

# Playing Teacher - Checking Our Work

Unit 17: Getting Better at Addition and Subtraction
Lesson 2 of 12

## Big Idea: Students need to be able to explain the strategies they use to solve problems, and also they must understand the importance of checking their own work.

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Standards:
Subject(s):
Math, Number Sense and Operations, problem solving, addition, subtraction, reasoning, Operations
60 minutes

### Beth McKenna

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