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Worksheet
Curated OER

Area of a Circle When Radius is Given

For Students 5th - 8th
Five problems provide practice for learners to find the area of a circle given the distance of the radius. Answers on the key use pi as a variable and do not include fully computed numeric answers. To reinforce basic multiplication facts...
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Worksheet
Curated OER

Area of Circle Worksheet

For Students 6th - 10th
Given the diameter of a circle, learners are charged with finding its area. They halve the diameter, square it, and multiply by pi. Five problems provide basic practice. 
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Lesson Plan
Curated OER

Circles-Diameter, Circumference, Radius and the Discovery of Pi

For Teachers 7th
Seventh graders measure the diameter, circumference and radius of a circle and find pi using the diameter and circumference. In this geometry lesson, 7th graders work in groups to find the diameter, radius, and circumference of circles....
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Worksheet
Raytheon

Geometry: Circles

For Students 6th - 8th
In this geometric circumference worksheet, 8th graders calculate the circumference of each of the 18 circles. The remaining pages of the worksheet include formulas and lesson ideas on finding the circumference of circles.
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Worksheet
Curated OER

Perimeter and Circumference

For Students 10th
In this geometry worksheet, 10th graders determine the perimeter of various polygons and the circumference of circles.  The two page worksheet contains twelve problems.  Answers are provided. 
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Worksheet
Math Mammoth

Circle

For Students 7th - 8th
For this circle worksheet, students find the area and circumference of circles and compare their size using percents. Students determine the are of composite figures made of circles and rectangles. This one-page worksheet contains six...
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Lesson Plan
Curated OER

Area and Circumference of Circles

For Teachers 8th
Eighth graders find the area and circumference of circles. For this area and circumference of circles lesson plan, 8th graders follow a step by step lesson and then demonstrate the skills on their own with circles they are given.
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Lesson Plan
Curated OER

The Circle's Measure

For Teachers 6th
Listen to the story "Sir Cumference and the Dragon of Pi" and solve the riddle and to save Sir Cumference from the knights.  Your students will love mixing an activity with story and will practice their measuring skills while completing...
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Instructional Video3:29
PBS

Scale City — Scaling up Recipes and Circles in the Real World

For Students 6th - 7th Standards
What a great big skillet you have. The resource introduces the class to the world's largest stainless steel skillet. The class creates a model of the skillet and a typical 12-inch skillet and compares the relative sizes of their areas....
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Lesson Plan
Curated OER

Finding Circumference and Area of a Circle

For Teachers 7th
Young geometers explore the concept of circumference and area of circles. They discuss what information is needed to find circumference and area. The resource employs several instructional methods: Frayer Model for Vocabulary, literature...
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Worksheet
Curated OER

Circle Formulas

For Students 10th
Tenth graders apply various circle formulas to determine radii, diameter, circumference, area, arc length, and sector area. The two page worksheet contains twenty-five problems. Answers are not provided. 
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Worksheet
Mrs. Glosser's Math Goodies

Circumference & Area Worksheet 1

For Students 6th - 9th Standards
Don't stress about creating your own problems and use this series of circumference and area worksheets. The problems ask pupil to plug diameter and radius into the formula to solve for area or circumference. The problems also have...
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Worksheet
Mrs. Glosser's Math Goodies

Circumference & Area Worksheet 2

For Students 6th - 9th Standards
With plenty of problems to chose from, this series of worksheets provides you different types of area and circumference problems. Your learners can plug diameter and radius in to solve, or they can work backward when the area or...
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Worksheet
Mrs. Glosser's Math Goodies

Circumference & Area Worksheet 3

For Students 6th - 9th Standards
You can't go wrong with this series of practice problems about circumference and area. The answer keys are provided, so you can use some or all of the problems without needing to worry about solving beforehand. Some problems have your...
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Worksheet
Curated OER

Circumference and Area of Circles (A)

For Students 5th - 6th
In this geometry learning exercise, students solve 12 problems in which the area and circumference of a circle is calculated to the tenth place. No formulas are given on this page.
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Worksheet
Curated OER

Circumference and Area of Circles (B)

For Students 5th - 6th
In this geometry worksheet, students calculate the area and circumference of 12 circles in which either the diameter or radius is shown. There are no formulas given on this page.
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Worksheet
Curated OER

Circumference and Area of Circles

For Students 5th - 6th
In this circumference and area learning exercise, students find each for a set of 12 given circles; either diameter or radius are given. A website reference for additional resources and answers are provided.
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Lesson Plan
Curated OER

Geometry: Area, Scale Factor, Circumference

For Teachers 5th - 8th
In this geometry worksheet, students solve 10 problems regarding area, scale factors, and circumference. Students, in 3 of the problems, are given the circumference and asked to work backwards to find missing information.
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Lesson Plan
Curated OER

Exploring Circles

For Teachers 9th - 12th
Students explore circles using a graphing calculator. For this circles lesson, students write the equation of a circle with a given center and radius length. Students find the most appropriate model for each combination of data they...
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Lesson Plan
Curated OER

Looking at Circumference

For Teachers 6th - 8th
Students understand where the number for pi comes from. They understand and use the formula for circumference. Students measure the circles given out and the diameters of those circles and record the results on their worksheet.
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Worksheet
Curated OER

Calculate Area Using Pi

For Students 7th - 9th
Geometers find the area of four circles given their circumferences. Circumference is presented in the form of "numeral (diameter) x pi"; the answer key shows solutions as  "numeral (radius squared) x pi," so computation is limited to...
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Worksheet
Curated OER

Circles

For Students 7th
In this circles worksheet, 7th graders identify and complete 6 different problems that include determining various parts of a circle. First, they identify and define each circle term listed on the left. Then, students color each term...
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Worksheet
Curated OER

Circumference of Circle

For Students 4th - 6th
In this circumference worksheet, students find circumference. Radius and diameter are given, as well as an answer key. Workspace is provided.
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Unit Plan
Mathematics Vision Project

Circles: A Geometric Perspective

For Teachers 10th - 12th Standards
Circles are the foundation of many geometric concepts and extensions - a point that is thoroughly driven home in this extensive unit. Fundamental properties of circles are investigated (including sector area, angle measure, and...

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