Perimeter Resources

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Perimeter
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Polygon Perimeters with Tantalizing Tangrams!
Polygon Perimeters with Tantalizing Tangrams!
Lesson Plan
Polygon Perimeters with Tantalizing Tangrams!
Teach your students to find the perimeter of polygons using real world examples. They will make polygon pictures using tangrams and practice finding the perimeters of the polygons in their masterpieces.
3rd grade
Math
Lesson Plan
The Case of the Missing Rectangle Side
The Case of the Missing Rectangle Side
Lesson Plan
The Case of the Missing Rectangle Side
Your students will become junior math detectives as they hunt down the missing side of a rectangle by applying the area formula for rectangles. The only clues they have are the rectangle's area and the measure of one side.
4th grade
Math
Lesson Plan
Find the Missing Side
Find the Missing Side
Worksheet
Find the Missing Side
Get your child acquainted with the concept of perimeter with this geometry worksheet
3rd grade
Math
Worksheet
Math Review Part 3: Geometry Galore!
Math Review Part 3: Geometry Galore!
Worksheet
Math Review Part 3: Geometry Galore!
Use this year-end assessment to check students’ grasp of key fourth grade geometry concepts.
4th grade
Math
Worksheet
Solving Perimeter Word Problems
Solving Perimeter Word Problems
Lesson Plan
Solving Perimeter Word Problems
Support your students' comprehension of perimeter word problems by teaching them to use an engaging strategy and graphic organizer. This lesson can stand alone or be used as a pre-lesson for *Polygon Perimeters with Tantalizing Tangrams!*
3rd grade
Math
Lesson Plan
Perimeter of a Rectangle
Perimeter of a Rectangle
Worksheet
Perimeter of a Rectangle
Have your fourth grader stretch his math knowledge with a geometry worksheet. He'll calculate the perimeter of a rectangle, then draw two similar shapes.
4th grade
Math
Worksheet
Third Grade Daily Sub Plan 3
Third Grade Daily Sub Plan 3
Lesson Plan
Third Grade Daily Sub Plan 3
Keep your third-grade classroom prepared with this daily sub plan! Your substitute can keep your students learning in your absence by using these expertly crafted lessons, worksheets, and activities. This teaching resource packet includes material covering nonfiction comprehension, opinion writing, geometry skills, and more.
3rd grade
Reading & Writing
Lesson Plan
Perimeter and Addition
Perimeter and Addition
Exercise
Perimeter and Addition
This addition exercise will help students add it all up when calculating the perimeter of an object.
3rd grade
Math
Exercise
What's In A Name? Finding Perimeter
What's In A Name? Finding Perimeter
Lesson Plan
What's In A Name? Finding Perimeter
Your students will enjoy using the perimeter formula to find the perimeter of their initials! In this lesson, they will write their initials in block letters on graph paper to include an element of art.
4th grade
Math
Lesson Plan
Trapezoid Perimeters
Trapezoid Perimeters
Worksheet
Trapezoid Perimeters
In this geometry exercise, children calculate the perimeter of various trapezoids by adding up the lengths of their sides.
3rd grade
Math
Worksheet
Fourth Grade Daily Sub Plan Day 1
Fourth Grade Daily Sub Plan Day 1
Lesson Plan
Fourth Grade Daily Sub Plan Day 1
Planning for a substitute in the classroom has never been easier than with this daily sub plan! Your substitute can keep your students learning in your absence by using these lessons, worksheets, and activities.
4th grade
Reading & Writing
Lesson Plan
Pentagon Perimeter Practice
Pentagon Perimeter Practice
Worksheet
Pentagon Perimeter Practice
Help your students practice finding the perimeter as they work through problems involving pentagons.
4th grade
Math
Worksheet
Perfect Perimeter
Perfect Perimeter
Lesson Plan
Perfect Perimeter
Go to any length to test your students' understanding of perimeter calculations. Students will use their understanding of the perimeter of rectangular shapes to create rectangles that have different side measurements but equal perimeters.
4th grade
Math
Lesson Plan
Perimeter: Perfect Carnival
Perimeter: Perfect Carnival
Worksheet
Perimeter: Perfect Carnival
Your students will have a blast as they use perimeter in a real-world scenario to plan their very own carnivals in the school gym. Students will choose their activities and use their calculated dimensions to map our their carnival on the provided graph.
4th grade
Math
Worksheet
Let's Go Around! Exploring Perimeter
Let's Go Around! Exploring Perimeter
Worksheet
Let's Go Around! Exploring Perimeter
Hunting for a worksheet to help your kid with geometry? This printable will help him find the perimeter of objects.
3rd grade
Math
Worksheet
Longest Route: Calculating Perimeter
Longest Route: Calculating Perimeter
Worksheet
Longest Route: Calculating Perimeter
In this 3rd grade math worksheet, your child will practice calculating perimeter and adding whole and half numbers.
3rd grade
Math
Worksheet
Fun With Perimeters
Fun With Perimeters
Worksheet
Fun With Perimeters
Fourth graders will calculate the perimeter of rectangles, then draw new shapes with similar perimeters. Help your child practice geometry with this worksheet.
4th grade
Math
Worksheet
Perimeter Match
Perimeter Match
Worksheet
Perimeter Match
Fourth grade mathematicians will need to use their geometry skills to figure out the length of the pictured rectangles' perimeters, then make their own.
4th grade
Math
Worksheet
Match the Perimeter
Match the Perimeter
Worksheet
Match the Perimeter
Your fourth grader will need to use his geometry skills to calculate and create rectangle perimeters. He'll also improve addition and multiplication skills.
4th grade
Math
Worksheet
Glossary: Solving Perimeter Word Problems
Glossary: Solving Perimeter Word Problems
Worksheet
Glossary: Solving Perimeter Word Problems
Use this glossary with the EL Support Lesson: Solving Perimeter Word Problems.
3rd grade
Math
Worksheet
More Pentagon Perimeter Practice
More Pentagon Perimeter Practice
Worksheet
More Pentagon Perimeter Practice
This is a great worksheet to practice calculating the perimeter for a pentagon.
4th grade
Math
Worksheet
Perimeter of Play
Perimeter of Play
Lesson Plan
Perimeter of Play
Practice calculating perimeter with the placement of carnival-themed games with given rectangular dimensions. Your students will use grid paper to determine the location of all the games they choose to make the perfect carnival.
4th grade
Math
Lesson Plan
Glossary: Real Life Perimeter
Glossary: Real Life Perimeter
Worksheet
Glossary: Real Life Perimeter
Use this glossary with the EL Support Lesson: Real Life Perimeter.
3rd grade
Math
Worksheet
Pentagon Perimeters
Pentagon Perimeters
Worksheet
Pentagon Perimeters
Use this geometry resource to give your students practice finding the perimeter of pentagons. Your pupils will be pentagon perimeter pros in no time!
3rd grade
Math
Worksheet
Vocabulary Cards: Real Life Perimeter
Vocabulary Cards: Real Life Perimeter
Worksheet
Vocabulary Cards: Real Life Perimeter
Use these vocabulary cards with the EL Support Lesson: Real Life Perimeter.
3rd grade
Math
Worksheet

Perimeter Resources

Perimeter is another geometric concept that your child will begin learning in third grade. Perimeter is defined as the distance around a two-dimensional shape. Calculating perimeter requires addition and multiplication skills, so after your student has mastered those concepts, you can help them move on to our worksheet resources for perimeter.

Perimeter Basics

Perimeter is the total length around a shape, and for different shapes, there are different ways to calculate it.
  • Square: perimeter = 4 × s, where s is the length of a side
  • Rectangle: perimeter = 2 × (w + h), where w is width and h is height
  • Triangle: perimeter = a + b + c, where a, b, and c are the lengths of three different sides
  • Circle: the perimeter for a circle is actually called the circumference. Circumference = 2 × π × r, where r is the radius.
  • Quadrilateral: perimeter = a + b + c + d, where a, b, c, and d are lengths of different sides
If you want to learn more about the different shapes, you can check out our geometry page to get a better idea of what circles are and the different polygons you can calculate the perimeter of.

After you practice your perimeter skills with the resources on this page, you can then move over to our area resources to learn how to calculate the amount of space inside a shape.