How Addition and Subtraction are Related (Part 1 of 3)

Unit 1: Rational Number Operations
Lesson 6 of 27

Objective: SWBAT write a sum as a difference using counters as a model

Big Idea: Students discover how a sum can be written as a difference by removing (subtracting) counters from a set.

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Subject(s):
Math, Number Sense and Operations, rational numbers
  40 minutes
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