Repeated addition also works for multiplying integers. The lesson plan has the class play the integer game again, but has one card multiplied several times. Scholars write the multiplication expression and the addition expression that give the total value for the repeated card. Pupils begin to develop an understanding of the rules for multiplying integers.

Concepts

integers, multiplication integers, negative integers, positive integers, addition repeated, subtraction repeated

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Additional Tags

math

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Instructional Ideas

• Use getting and giving money multiple times as a way to help with understanding
• Review the concept of multiplication as repeated addition with whole numbers before beginning the lesson

Classroom Considerations

• Requires the cards from the integer game
• To guarantee individuals work with positive and negative multiples, choose the star card for them both times
• The 10th segment in a 25-part unit

Pros

• Connects the idea of multiplying with integers to the integer game that the class previously played
• The examples provide sample responses to the questions

Cons

• None

Common Core

7.NS.A.2.a