Area of Plane Figures
Videos to help Grade 3 students learn how to understand area as an attribute of plane figures.
Common Core Standards: 3.MD.5,
Plans and Worksheets for Grade 3
Plans and Worksheets for all Grades
Lessons for Grade 3
Common Core For Grade 3
New York State Common Core Math Module 4, Grade 3, Lesson 1
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.
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.
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 widget 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.