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Unit 8

Multiplication and Division

Lesson 10

Putting It All Together

Expressions and Equations

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Let’s represent equal groups and write equal groups situations.

Unit 8 ● Lesson 10

Learning

Goal

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Multiplication and Division

Unit 8 ● Lesson 10 ● Warm-up

Which one doesn’t belong?

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A. B.

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C. D.

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Which One Doesn’t Belong?

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Card Sort: Find the Match

Unit 8 ● Lesson 10 ● Activity 1

  • We saw in the warm-up that different diagrams and equations can represent the same situation such as 4 groups of 6 or 4 times 6.
  • Think about what situation or quantities your card represents. Then, think about what another representation of the situation or quantities might look like.

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Launch

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Card Sort: Find the Match

Unit 8 ● Lesson 10 ● Activity 1

  1. Find a classmate whose card represents the same situation or quantities as your card does. Be prepared to explain why your cards belong together.
  2. Work with your partner to create a poster that includes:
    1. your cards
    2. a different diagram that your division equation could represent
    3. a situation that your division equation could represent

Show your thinking and organize it so it can be followed by others.

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Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Card Sort: Find the Match

Unit 8 ● Lesson 10 ● Activity 1

Let’s display your posters.

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Activity Synthesis

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Find the Match Gallery Walk

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Unit 8 ● Lesson 10 ● Activity 2

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As you visit the posters with your partner, answer these questions:

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  1. Describe a representation you saw that was different from the ones you showed in your poster.
  2. Choose a poster that is not yours. Describe one way that it shows the relationship between multiplication and division.

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Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Multiplication and Division

Unit 8 ● Lesson 10

  • Today we created posters that showed ways to represent division.
  • How does an area diagram show us the relationship between multiplication and division?
  • How does a tape diagram or equal-groups diagram show multiplication and division?
  • What were some aspects of the posters you saw that helped make the math your classmates used clear for you?

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Lesson Synthesis

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Relate Multiplication to Division

Unit 8 ● Lesson 10

Give an example of how multiplication and division are related. Explain or show your reasoning.

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Cool-down

Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.

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Slides are CC BY NC Kendall Hunt Publishing. Curriculum excerpts are CC BY Illustrative Mathematics.