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Unit 2 - Lesson 10 - Grade 3: Illustrative Mathematics

Last updated 9 months ago
10 questions
Note from the author:
Grade 3 Unit 2
Lesson 10: Solve Area Problems
CC BY 2021 Illustrative Mathematics®
Grade 3 Unit 2
Lesson 10: Solve Area Problems
CC BY 2021 Illustrative Mathematics®
Lesson: Solve Area Problems

Number Talk: One More Group (Warm Up)

Find the value of each expression mentally.
1

5 x 2

1

6 x 2

1

5 x 6

1

6 x 6

Paint a Wall

Noah is painting a wall in a community garden. The wall is shaped like a rectangle. A diagram of the wall is shown here.


Paint is sold in 3 different sizes:
  • A small container will cover 3 square meters.
  • A medium container will cover 10 square meters.
  • A large container will cover 40 square meters.
1

What should Noah buy? Explain your reasoning.

Create a Garden

1

Elena is planning how to use her rectangular space in the community garden. She needs a space that is
at least 20 square feet to fit her plants. She has enough soil for a garden that is 30 square feet. The space she has available has to be 3 feet on one side.

What are the possible sizes for her garden?

1

Create a poster to show your thinking. Organize it so it can be followed by others.

1

As you look at the posters with your group:

Describe how another group solved the problem in a different way than your group did.

1

As you look at the posters with your group:

Write three things you saw that helped you understand how other students solved the problem.

Cool Down: How Much Fabric?
1

Kiran bought two pieces of fabric. The black fabric is 9 yards by 2 yards. The purple fabric is 4 yards by 5 yards. Which piece of fabric has the larger area? Explain or show your reasoning.