## Part/Part/Whole Mat - Section 2: Develop the Concept

Part/Part/Whole Mat

# Addition in the Real World

Unit 1: Addition and Subtraction Basic Training
Lesson 3 of 7

## Big Idea: The big idea of this lesson is that we can think of addition in the real world as the joining of two parts to make a whole. The use of addition number sentences can show how we join the parts to make the whole.

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55 minutes

### Kristen O'Connor

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