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Lesson Plan
Curated OER

Area and Circumference of Circles

For Teachers 6th - 7th
Learners view two PowerPoints and practice computing the area and circumference of circles. They must use given formulas to make their computations. The lesson includes links to both PowerPoints as well as a worksheet (with answer key).
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Worksheet
Curated OER

Circumference and Area of Circles

For Students 5th - 6th
In this circumference and area of circles instructional activity, 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
In 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
Students 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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Worksheet
Curated OER

Making a Six-pointed Star

For Students 7th - 8th
In this polygon activity, 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

Pumpkin Play

For Teachers K
Have you ever examined a pumpkin and estimated the number of lines it has? In this math lesson plan, 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

Around the Clock

For Teachers 6th - 8th
Young scholars 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

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
Students 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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Worksheet
Curated OER

Similar Triangles and Trapezoids, and Circles

For Students 9th - 12th
High schoolers answer two problems involving area of shaded regions. Students then answers six questions involving perimeter, area, and circumferences. The remaining two questions involve ratios of similar figures.
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Worksheet
Curated OER

Circles and Cylinders

For Students 10th
In this geometry lesson, 10th graders break down a circle and identify the different parts. They discuss chords, diameter, radius, circumference, major and minor segment. There are 42 problems broken down into 5 different sections.
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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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Worksheet
Curated OER

Circles: Geometry Review Worksheet

For Students 10th Standards
Tenth graders solve and complete 14 different geometry problems. First, they find the area and circumference of a circle with a given radius. Then, they find the area between a circle and an inscribed equilateral triangle given the...
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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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Lesson Plan
Curated OER

Pumpkin Predictions

For Teachers 4th - 7th
It's time for Halloween and math! Perfect for Fall, this simple worksheet provides a grid for young mathematicians to record their predictions about a pumpkin's height, stem length, diameter, circumference, and weight. After learners...
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Lesson Plan
Illustrative Mathematics

Stained Glass

For Teachers 7th - 9th Standards
A complex question looking for the total cost of a stained glass window by calculating area and circumference of a circle. With detailed components, this activity will challenge your designers to figure out if they have enough money to...
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Interactive
Curated OER

Circumference of Circle Worksheets

For Students 6th - 12th
In this online math worksheet, students determine the circumference of a variety of circles given their diameter. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A...
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Worksheet
Curated OER

Circumference of Circle

For Students 4th - 6th
In this circumference instructional activity, students find circumference. Radius and diameter are given, as well as an answer key. Workspace is provided.
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Worksheet
Curated OER

Circumference

For Students 8th - 12th
In this circumference activity, learners calculate the circumference of circles with equations including pie and measurements. Students complete 5 problems.
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Worksheet
Curated OER

Circumference and Area

For Students 6th
In this circumference and area learning exercise, 6th graders find the circumference and area of circles when the diameter is given. Students complete 9 problems.
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Worksheet
Curated OER

Circumference and Area

For Students 4th - 6th
In this circumference and area worksheet, students find each for a set of 9 circles. A website reference for additional activities is given.
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Worksheet
Curated OER

Circumference of a Circle

For Students 10th
In this circumference of a circle worksheet, 10th graders solve 10 different problems that include various illustrations of circles. First, they multiply pi by the given diameter of the circle. Then, students determine the radius by...
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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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Lesson Plan
Curated OER

Finding The Circumference Given The Radius

For Teachers 6th - 7th
Pupils develop an understanding of pi and the relationship between the diameter, radius and circumference. After a lecture/demo, students use construction paper and a compass to solve problems using diameter, radius and circumference.

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