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Worksheet
Curated OER

Circles - Word Problems

For Students 6th - 7th
In this geometry problem solving learning exercise, students answer 8 words problems based on their knowledge of circles, circumference, radius, diameter, and perimeters. They show their work on the sheet between problems.
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Worksheet
Curated OER

Circles Terminology Multiple Choice

For Students 9th - 12th
In this circles worksheet, learners solve 10 multiple choice problems. Students answer questions about diameter and chord relationships, tangent lines to a circle, circumference, the Pi relationship, etc.
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Lesson Plan
Curated OER

Circumferences, Diameters, and Radii

For Teachers 5th - 8th
Students explore circumferences, diameters, and radii. In this math lesson plan, students measure circumferences in inches and compute radii and diameters, given different circumferences.
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Worksheet
Curated OER

Geometry: Calculating the Area of a Circle

For Students 7th - 9th
In this area worksheet, students use the perimeter or radius to determine the area of a circle. This one-page worksheet contains 8 problems. This worksheet may be produced in printed form. Answers may be viewed on-line.
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Worksheet
Curated OER

Writing Equations of Circles

For Students 10th - 12th
In this writing equations instructional activity, students examine given information and write the equation of a circle in standard form. This four-page instructional activity contains 30 problems. Answers are provided on the last page.
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Lesson Plan
Curated OER

Angles, Triangles, Quadrilaterals, Circles and Related

For Teachers 6th - 8th
Middle schoolers classify angles. For this angles lesson, students explore the characteristics of angles, triangles, quadrilaterals and circles. They identify polygons and sing a classifying angles song. Middle schoolers participate...
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Worksheet
Curated OER

Skills Practice: Area of Circles

For Students 7th - 8th
Two practice pages with 10 problems each show circles and give their radii. Learners calculate the area. Answers are provided. 
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Worksheet
Curated OER

Circumference and Area of Circles

For Students 5th - 6th
In this circumference and area of circles worksheet, students find each to 1 decimal place of 12 given circles. A website reference for additional resources and answer key are given.
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Worksheet
Curated OER

Circumference and Area of Circles

For Students 4th - 6th
For this circles worksheet, students use given radius or diameter measurements and find the circumference and area of circles to one decimal place.
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Lesson Plan
Curated OER

Perimeter and Circumference

For Teachers 5th - 8th
Young scholars understand the definitions for perimeter and circumference and know the difference. They then go over sample problems as a class. Students use drill and practice skills to complete activity pages.
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Lesson Plan
Curated OER

Circles all Around

For Teachers 6th - 8th Standards
Middle schoolers investigate circles. In this middle school mathematics lesson, students explore the relationship between the diameter of a circle and its circumference.
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Worksheet
Math Mammoth

Circles

For Students 6th - 8th Standards
Your class examines a series of shapes and discusses how we know that they are not circles. In this way, you begin to acquaint them with the properties and parts of this geometric figure. Then, teach them how to use a protractor to...
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Worksheet
Curated OER

Circles

For Students 10th
In this circles worksheet, 10th graders solve and complete 16 various types of problems. First, they state the center and radius for the given equation and graph. Then, students determine if each point is on the circle, in its interior,...
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Worksheet
Curated OER

Area Of Circles

For Students 5th - 8th
In this math worksheet, students complete 23 problems where they find the area of circles when the radius, diameter, or circumference is given. Examples are given in this well-designed worksheet.
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Activity
Mrs. Burke's Math Page

The Amazing Pi Race

For Teachers 7th - 12th Standards
Add a sense of excitement to your math class with this race across the country. Using their knowledge of all things circular, young mathematicians work in pairs answering a series of pi-related word problems as they hop from one city to...
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Lesson Plan
Curated OER

Crop Circles

For Teachers 5th - 8th
Students calculate the area and circumference of a circle. In this geometry lesson, students solve word problems with circles and create formulas to calculate the area. They find the rate and complex area of a circle.
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Worksheet
Curated OER

Making a Six-pointed Star

For Students 7th - 8th
In this polygon worksheet, students identify and create a six-pointed star by completing 6 steps. First, they use a compass to trace a circle with a given radius. Then, students draw a point on circumference of the circle and place the...
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Lesson Plan
Curated OER

As Easy As Pi!

For Teachers 6th - 8th
Students conduct a scavenger hunt to find circular objects at home, then use the objects to find the pattern of pi.
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Lesson Plan
Curated OER

Around the Clock

For Teachers 6th - 8th
Middle schoolers discover the relationship between the circumference of a circle and its diameter. They find the length of an arc of a circle.Students use estimation strategies in real-world applications to predict results (i.e.,...
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Lesson Plan
Curated OER

Discovering Pi

For Teachers 9th - 11th
Define terminology related to a circle. Practice accuracy in measuring and then create a spreadsheet based on data collected from solving for parts of a circle. Groups can have fun analyzing their data as it relates to Pi.
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Lesson Plan
Curated OER

Pumpkin Play

For Teachers K
Have you ever examined a pumpkin and estimated the number of lines it has? In this math lesson, students count the actual number of lines, record and graph the results. They investigate the circumference, weight and buoyancy of the...
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Lesson Plan
Curated OER

Measuring Pumpkins and Our World

For Teachers K
Students estimate the circumference of a pumpkin. They measure the pumpkin and other school objects, and record the measurements on worksheets.
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Lesson Plan
Curated OER

Tennis Ball Tubes

For Teachers 5th - 7th
Learners determine whether the height of a tennis ball tube or the distance around the tube is greater, or whether they are the same. Using the formula for the circumference and diameter of a sphere, they discuss the word problem, and in...
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Lesson Plan
Curated OER

Are You Full of Hot Air?

For Teachers 2nd - 3rd Standards
Explore the concept of measuring and recording circumference. In this physical science and measurement lesson, young learners blow up balloons, measure the circumference, and record the data on an interactive graphing website.

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