## building a model - Section 3: Independent Practice

building a model

# Think Addition to Solve Subtraction

Unit 11: Subtraction Strategies
Lesson 2 of 7

## Big Idea: My first graders previously learned the relationship between addition and subtraction through fact families. Now I want them to use this relationship as a tool to solve for unknown differences.

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Standards:
Subject(s):
Math, Differentiation, inverse relationship, Number Sense and Operations, addition, subtraction, difference, First Grade, take away, Operations
35 minutes

### Jennifer Moon

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