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Unit 2 - Lesson 12 - Grade 3: Illustrative Mathematics

Last updated 9 months ago

10 questions

Note from the author:

Grade 3 Unit 2
Lesson 12: Area and Addition
CC BY 2021 Illustrative Mathematics®

Instructions

Grade 3 Unit 2
Lesson 12: Area and Addition
CC BY 2021 Illustrative Mathematics®

Lesson: Area and Addition

Number Talk: So Close (Warm Up)

Find the value of each expression mentally.

1

9 + 6

1

29 + 6

1

59 + 6

1

49 + 8

Rectangles in Rectangles

1

This rectangle represents space in a community garden. The shaded part is covered with vegetables and the unshaded part is covered with flowers. Each square represents 1 square foot.

What is the area of the whole space?

1

Design your own garden. Find the area of each part of the garden and the area of the whole garden.

Find the Rectangles

1

What do you notice?

1

What do you wonder?

1

Find the area of this figure. Explain or show your reasoning. Organize it so it can be followed by others.

Cool Down: Where are the Rectangles?

1

Find the area of this figure. Explain or show your reasoning.