 # Perimeters, Areas, Line Plots

Videos, examples, and solutions to help Grade 3 students learn how to use a line plot to record the number of rectangles constructed in Lessons 20 and 21.

Common Core Standards: 3.MD.4, 3.MD.8, 3.G.1

Related Topics:
Lesson Plans and Worksheets for Grade 3,
Lesson Plans and Worksheets for all Grades,
More Lessons for Grade 3,
Common Core For Grade 3

New York State Common Core Math Grade 3, Module 7, Lesson 22

Download the Worksheets for Grade 3, Module 7, lesson 22 (pdf)

Lesson 22 Homework

1. The following line plot shows the number of rectangles a student made using square unit tiles. Use the line plot to answer the questions below.
a. Why are all of the perimeter measurements even? Do all rectangles have even perimeters?
b. Explain the pattern in the line plot. What types of side lengths make this pattern possible?
c. How many X’s would you draw for a perimeter of 32? Explain your answer.

2. Luis uses unit square tiles to build a rectangle with a perimeter of 24 inches. Does knowing this help him find the number of rectangles he can build with an area of 24 square inches? Why or why not?

3. Esperanza makes a rectangle with a piece of string. She says the perimeter of her rectangle is 33 centimeters. Explain how it’s possible for her rectangle to have an odd perimeter.

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations. We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.