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Unit 7 - Lesson 10 - Grade 3: Illustrative Mathematics

Last updated 9 months ago
12 questions
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Grade 3 Unit 7
Lesson 10: Problem Solving With Perimeter and Area
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 7
Lesson 10: Problem Solving With Perimeter and Area
CC BY 2021 Illustrative Mathematics®
Lesson: Problem Solving With Perimeter and Area

True or False: Divide in Parts (Warm Up)

1

1

Explain your reasoning.

1

1

Explain your reasoning.

1

1

Explain your reasoning.

1

1

Explain your reasoning.

Rope Off the Garden

1

Andre wants to know how much rope is needed to enclose the new rectangular school garden. The length of the garden is 30 feet. The width of the garden is 8 feet.
  • Clare says she can use multiplication to find the length of rope Andre needs.
  • Diego says he can use addition to find the length of rope Andre needs.
Who do you agree with? Explain or show your reasoning.

Info Gap: A Garden and a Playground

Round 1


Your teacher will give you either a problem card or a data card. Do not show or read your card to your partner.

Problem Card Student: Silently read the problem card.

Data Card Student: Silently read the data card.
Problem Card Student:
"Can you tell me______?" (Ask for a specific piece of information)
Data Card Student:
"Why do you need to know _____?" (Repeat the information requested)
Problem Card Student:
"I need to know _______ because _______."
Data Card Student:
Listen to your partner's reason. Answer with information from the data card.
Problem Card Student:
Continue asking questions until you can say, "I have enough information to solve this problem."

Display the problem card.
1

Solve the problem independently.

Data Card Student:
Share Data Card, then compare strategies and solutions.
Pause here so your teacher can review your work.

Ask your teacher for a new set of cards and repeat the activity, trading roles with your partner.

Round 2


Your teacher will give you either a problem card or a data card. Do not show or read your card to your partner.

Problem Card Student: Silently read the problem card.

Data Card Student: Silently read the data card.
Problem Card Student:
"Can you tell me______?" (Ask for a specific piece of information)
Data Card Student:
"Why do you need to know _____?" (Repeat the information requested)
Problem Card Student:
"I need to know _______ because _______."
Data Card Student:
Listen to your partner's reason. Answer with information from the data card.
Problem Card Student:
Continue asking questions until you can say, "I have enough information to solve this problem."

Display the problem card.
1

Solve the problem independently.

Data Card Student:
Share Data Card, then compare strategies and solutions.
Pause here so your teacher can review your work.

Ask your teacher for a new set of cards and repeat the activity, trading roles with your partner.
Cool Down: Lin’s Garden Fence
1

Lin is building a fence around her rectangular garden. A diagram is shown. The area of the garden is 36 square feet. How many feet of fencing material will she need to enclose the whole garden?