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.
Objectives
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, , is the same as adding to the additive inverse of ),
- 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.
Prerequisites
Students should already be familiar with
- subtraction with natural numbers,
- integers on number lines.
Exclusions
Students will not cover
- identifying the properties of subtraction on integers.