## Reflection: Checks for Understanding Understanding Subtraction - Section 4: Closing

The students generated a list of definitions for addition and subtraction. The resources section shows the definitions that students generated. This list is one that we will be able to add to during the year.

Checks for Understanding: Student Definitions

# Understanding Subtraction

Unit 2: Adding and Subtracting the Basics
Lesson 14 of 18

## Big Idea: Understanding subtraction is as key to Common Core Standards as is understanding addition and it is usually much harder for students to grasp.

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50 minutes

### Beth McKenna

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