Lesson Plan: Subtracting Integers Mathematics • 7th Grade

This lesson plan includes the objectives, prerequisites, and exclusions of the lesson teaching students how to subtract from positive and negative integers in both abstract and real-world contexts.


Students will be able to

  • model the subtraction of integers with number lines,
  • recognize the relation between subtracting and adding two integers (i.e., subtracting two integers, 𝑎𝑏, is the same as adding 𝑎 to the additive inverse of 𝑏),
  • subtract a negative integer from a positive integer,
  • subtract from a negative integer,
  • subtract a positive integer from a positive integer when the difference is less than 0,
  • solve real-world problems that involve subtracting integers.


Students should already be familiar with

  • subtraction with natural numbers,
  • integers on number lines.


Students will not cover

  • identifying the properties of subtraction on integers.

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