Using the Number Line to Model the Addition of Integers

The second lesson in a series of 25 shows the class how to use arrows and a number line to add integers. Learners use their knowledge of the commutative property and absolute value in the explanation. Classmates play the integer game again to continue to practice integer addition.

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CCSS: Designed
Instructional Ideas

  • Provide a quick review of the properties of addition
  • Have the class show on their number lines the commutative property of addition holds for integers
Classroom Considerations

  • If scholars are using laminated number lines, have them draw their arrows with an overhead marker or grease pencil
Pros

  • The problem set handout has number lines where needed
  • Provides hints for kinesthetic and visual learners
Cons

  • None
Common Core