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Lesson Plan

6. Use equivalent expressions to add and subtract integers (FP)

teaches Common Core State Standards CCSS.Math.Content.7.NS.A.1c http://corestandards.org/Math/Content/7/NS/A/1/c
teaches Common Core State Standards CCSS.Math.Practice.MP7 http://corestandards.org/Math/Practice/MP7
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Lesson objective: Practice subtracting integers by writing equivalent expressions using addition.

This lesson helps to build procedural skill with adding and subtracting integers. The number line is used here because students are working with the connection between adding and subtracting using distance and direction. This work develops students' understanding that addition and subtraction are related through operations with integers.

Students engage in Mathematical Practice 7 (Look for and make use of structure) as they connect their previous knowledge of the relationship between addition and subtraction with whole numbers to the new skill of adding and subtracting with a broader set of numbers.

Key vocabulary:

  • integers
  • opposites

Special materials needed:

  • Optional: Blank number lines
Related content

Appears in

Rational number operations – addition and subtraction

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