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Unit 7 - Lesson 8 - Grade 3: Illustrative Mathematics

Last updated 9 months ago

16 questions

Note from the author:

Grade 3 Unit 7
Lesson 8: Find the Perimeter
CC BY 2021 Illustrative Mathematics®

Instructions

Grade 3 Unit 7
Lesson 8: Find the Perimeter
CC BY 2021 Illustrative Mathematics®

Lesson: Find the Perimeter

Number Talk: Decreasing Dividend (Warm Up)

Find the value of each expression mentally.

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Ways to Find Perimeter

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What do you notice?

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What do you wonder?

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Find the perimeter of the shape. Explain or show your reasoning.

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Find the perimeter of the shape. Explain or show your reasoning.

1

Find the perimeter of the shape. Explain or show your reasoning.

1

Find the perimeter of the shape. Explain or show your reasoning.

1

Find the perimeter of the shape. Explain or show your reasoning.

Something is Missing

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Find the perimeter of this rectangle. Explain or show your reasoning.

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All the short sides of this figure are the same length, and all the angles are right angles. Find the perimeter. Explain or show your reasoning.

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All the sides of the octagon are the same length. Find the perimeter. Explain or show your reasoning.

Cool Down: A Triangle and a Square

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Find the perimeter of the shape. Explain or show your reasoning.

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Find the perimeter of the shape. Explain or show your reasoning.