Area

Lesson 5

Math

Unit 4

3rd Grade

Lesson 5 of 14

Objective


Find the area of a rectangle that has been superimposed over a grid.

Common Core Standards


Core Standards

  • 3.MD.C.6 — Measure areas by counting unit squares (square cm, square m, square in, square ft, and improvised units).
  • 3.MD.C.7.A — Find the area of a rectangle with whole-number side lengths by tiling it, and show that the area is the same as would be found by multiplying the side lengths.

Foundational Standards

  • 2.G.A.2
  • 2.MD.A.1

Criteria for Success


  1. Find the area of a rectangle that has been superimposed over a rectangle by pictorially drawing rows and columns in the rectangle to fill it in with square units completely to count individual units, using skip-counting, and/or possibly using multiplication (MP.6, MP.7).
  2. Explain how the number of rows and columns of unit squares in a rectangle corresponds with the area of that rectangle (MP.3, MP.7).
Fishtank Plus

Unlock features to optimize your prep time, plan engaging lessons, and monitor student progress.

Anchor Tasks


Problem 1

Label the following shaded rectangle with the number of rows and columns of unit squares that it consists of. Then find its area.

Guiding Questions

Create a free account or sign in to access the Guiding Questions for this Anchor Problem.

Problem 2

Label the following shaded rectangle with the number of rows and columns of unit squares that it consists of. Then find its area. 

Guiding Questions

Create a free account or sign in to access the Guiding Questions for this Anchor Problem.

Problem Set


Answer Keys

Unlock the answer keys for this lesson's problem set and extra practice problems to save time and support student learning.

Discussion of Problem Set

  • Which two figures have the same area in #1? What are the number of rows and columns of unit squares of each of those figures? What do you notice about their rows and columns as compared to their area? 
  • How can Mila and Jorge both be right in #4? What could the area of the rectangle possibly be? Is there more than one possibility? 

Target Task


Label the number of rows and columns of unit squares of the rectangle below. Then find the total area of the rectangle.

Student Response

Create a free account or sign in to view Student Response

Additional Practice


The Extra Practice Problems can be used as additional practice for homework, during an intervention block, etc. Daily Word Problems and Fluency Activities are aligned to the content of the unit but not necessarily to the lesson objective, therefore feel free to use them anytime during your school day.

Extra Practice Problems

Answer Keys

Answer keys for Problem Sets and Extra Practice Problems are available with a Fishtank Plus subscription.

Word Problems and Fluency Activities

Word Problems and Fluency Activities

Help students strengthen their application and fluency skills with daily word problem practice and content-aligned fluency activities.

icon/arrow/right/large copy

Lesson 4

icon/arrow/right/large

Lesson 6

Lesson Map

A7CB09C2-D12F-4F55-80DB-37298FF0A765

Topic A: Understanding Concepts of Area

Topic B: The Distributive Property and Composite Area

Request a Demo

See all of the features of Fishtank in action and begin the conversation about adoption.

Learn more about Fishtank Learning School Adoption.

Contact Information

School Information

What courses are you interested in?

ELA

Math

Are you interested in onboarding professional learning for your teachers and instructional leaders?

Yes

No

Any other information you would like to provide about your school?

Effective Instruction Made Easy

Effective Instruction Made Easy

Access rigorous, relevant, and adaptable math lesson plans for free