Lesson Planet
Search educational resources
  • Sign In Try It Free
  • AI Teacher Tools
    • Discover Resources Search reviewed educational resources by keyword, subject, grade, type, and more
    • Curriculum Manager (My Content) Manage saved and uploaded resources and folders To Access the Curriculum Manager Sign In or Join Now
    • Browse Resource Directory Browse educational resources by subject and topic
    • Curriculum Calendar Explore curriculum resources by date
    • Lesson Planning Articles Timely and inspiring teaching ideas that you can apply in your classroom
    • Our Story
    • Frequently Asked Questions
    • Testimonials
    • Contact Us
  • Pricing
  • School Access
    • Your school or district can sign up for Lesson Planet — with no cost to teachers
      Learn More
  • Sign In
  • Try It Free

Hi, what do you want to do?

Create a lesson plan
Create a lesson plan
Generate resources with 80+ AI teacher tools
Generate resources with 80+ AI teacher tools
Search 200,000 instructional videos
Search 200,000 instructional videos
Find a teaching resource
Find a teaching resource
Rectangles - Same Area and Different Perimeter WorksheetRectangles - Same Area and Different Perimeter Worksheet
Publisher
Common Core Sheets
Resource Details
Curator Rating
Educator Rating
Not yet Rated
Grade
3rd
Subjects
Math
1 more...
Resource Types
Worksheets
3 more...
Audiences
For Teacher Use
1 more...
Instructional Strategies
Independent Practice
1 more...
Worksheet

Rectangles - Same Area and Different Perimeter

Curated and Reviewed by Lesson Planet
This Rectangles - Same Area and Different Perimeter worksheet also includes:
  • Answer Key
  • Join to access all included materials

Given a rectangle with specified dimensions, third graders are prompted to create a new rectangle with the same area, but a different perimeter. This challenges learners to think about perimeter and area in a new way. Use worksheet as a teaching tool before distributing as independent practice

106 Views 50 Downloads
CCSS: Designed

Concepts

perimeter, perimeter of rectangles, area, area of rectangles, square units

Additional Tags

math

Instructional Ideas

  • Use worksheet as a teaching tool before distributing as independent practice
  • Promote collaboration by allowing children to work in partners
  • Implement the exercise at the end of a unit on area and perimeter
  • Instruct class to label the sides of the new rectangle and write an equation to represent the new dimensions

Classroom Considerations

  • Each problem contains two square unit grids; one with the original rectangle and one that is blank for the new rectangle
  • Print all 10 versions of the worksheet or choose your favorites and print by page

Pros

  • All 10 versions of the worksheet include an answer key

Cons

  • None

Common Core

3.MD.D.8

See similar resources:

Worksheet

Rectangles - Same Perimeter and Different Area

Common Core Sheets
Given a rectangle with specified dimensions, learners are prompted to create a new rectangle with the same perimeter, but a different area. This challenges third graders to think about perimeter and area in a new way. Each problem...
3rd Math
CCSS: Designed
Assessment

Area and Perimeter

Curriculum Corner
Get third graders excited to work find area and perimeter of unit squares, rectangles, and irregular shapes. A 36-page packet comes with task cards, graphic organizers, practice worksheets, printables with squares, exit tickets, and word...
3rd - 4th Math
CCSS: Adaptable
Worksheet

Finding Side Length (Given Perimeter)

Common Core Sheets
Perimeter is the total distance around an object. One can find the perimeter of a rectangle or square by adding all four side lengths together. These worksheets require third graders to find the missing side length, given the...
3rd Math
CCSS: Designed
Worksheet

Area and Perimeter of Irregular Shapes

Alberta Learning
Evaluate young mathematicians' understanding of area and perimeter with this series of three assessment tasks. Challenging students to not only calculate the area and perimeter of irregular shapes, but to explain in writing their...
3rd - 6th Math
CCSS: Adaptable
PPT

Who Wants to Be a Champion: Perimeter, Area, Symmetry

Curated OER
Have your learners practice finding the perimeter and area of geometric shapes using this resource. While just a simple review, this could be a wonderful way to solidify the concepts in their minds.
3rd - 5th Math
Instructional Video

How Do You Find the Perimeter of a Rectangle?

Curated OER
The teacher illustrates a diagram to help you learn about perimeter. First, she adds the sides together to get the perimeter. Then, she shows how to use the perimeter formula to make it a bit simpler.
5 mins 3rd - 5th Math
Lesson Planet Article

Area and Perimeter Activities

Curated OER
Read this article before you begin teaching geometry! It gives teachers some insight into the world of teaching geometry to young learners, and four area and perimeter lessons are attached. 
3rd - 5th Math
CCSS: Adaptable
Unit Plan

Ck 12: Elem Math: Partitioning Composite Figures Into Rectangles to Find Area 1

CK-12 Foundation
[Free Registration/Login may be required to access all resource tools.] In this learning module, students are asked to partition a shape into rectangles and add their areas together to get the area of the whole figure. Includes video...
3rd - 5th Math
CCSS: Adaptable
Lesson Plan

Area Model of Multiplication Using Base 10 Manipulatives

Curated OER
Explore two-digit multiplication with your class as they work in groups to build models of two-digit multiplication using base 10 manipulatives. They construct rectangles replacing standard numbers with equivalent place values using...
3rd - 5th Math
Instructional Video

How Do You Find the Area of a Rectangle?

Virtual Nerd
Area=length x width. Locate the value of the length of the rectangle and locate the given width and plug them in to solve. Don't forget to include the units and multiply them too. This three-minute video can be watched at home to review...
4 mins 3rd - 6th Math
CCSS: Adaptable
Try It Free
© 1999-2026 Learning Explorer, Inc.
Teacher Lesson Plans, Worksheets and Resources

Sign up for the Lesson Planet Monthly Newsletter

Open Educational Resources (OER)

  • Health
  • Language Arts
  • Languages
  • Math
  • Physical Education
  • Science
  • Social Studies
  • Special Education
  • Visual and Performing Arts
View All Lesson Plans

Discover Resources

  • Our Review Process
  • How it Works
  • How to Search
  • Create a Collection

Manage Curriculum

  • Edit a Collection
  • Assign to Students
  • Manage My Content
Contact Us Site Map Privacy Policy Terms of Use