Area of Plane Figures
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Lesson Plans and Worksheets for Grade 3
Lesson Plans and Worksheets for all Grades
More Lessons for Grade 3
Common Core For Grade 3
Videos, examples, solutions, and lessons to help Grade 3 students learn how to understand area as an attribute of plane figures.
Common Core Standards: 3.MD.5, 3.MD.6, 3.MD.7
New York State Common Core Math Module 4, Grade 3, Lesson 1
Application Problem
Part 1: Using pattern blocks to understand area.
Part 2: Measuring area using square units.
Lesson 1 Homework
1. Magnus covers the same shape with triangles, rhombuses, and trapezoids
a. How many triangles will it take to cover the shape?
b. How many rhombuses will it take to cover the shape?
c. Magnus notices that 3 triangles from Part (a) cover 1 trapezoid. How many trapezoids will it take to cover the shape below? Explain your answer.
2. Angela uses squares to find the area of a rectangle. Her work is shown below.
a. How many squares did she use to cover the rectangle?
b. What is the area of the rectangle in square units? Explain how you found your answer.
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.
Lesson Plans and Worksheets for Grade 3
Lesson Plans and Worksheets for all Grades
More Lessons for Grade 3
Common Core For Grade 3
Videos, examples, solutions, and lessons to help Grade 3 students learn how to understand area as an attribute of plane figures.
Common Core Standards: 3.MD.5, 3.MD.6, 3.MD.7
New York State Common Core Math Module 4, Grade 3, Lesson 1
Application Problem
Eric makes a shape with 8 trapezoid pattern blocks. Brock makes the same shape using triangle pattern blocks. It takes 3 triangles to make 1 trapezoid. How many triangle pattern blocks does Brock use?
Note: This problem reviews the Grade 3–Module 3 concept of multiplying using units of 8.
Part 1: Using pattern blocks to understand area.
Part 2: Measuring area using square units.
1. Magnus covers the same shape with triangles, rhombuses, and trapezoids
a. How many triangles will it take to cover the shape?
b. How many rhombuses will it take to cover the shape?
c. Magnus notices that 3 triangles from Part (a) cover 1 trapezoid. How many trapezoids will it take to cover the shape below? Explain your answer.
2. Angela uses squares to find the area of a rectangle. Her work is shown below.
a. How many squares did she use to cover the rectangle?
b. What is the area of the rectangle in square units? Explain how you found your answer.
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.
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