Interactive
Curated OER

Circle Problems - Radius, Diameter, Circumference and Area

For Students 9th - 12th
In this online math instructional activity, students determine the radius, circumference, diameter and area of circles. This excellent resource allows the students to check their answers, and to get "hints" should they run into...
Interactive
Curated OER

Area of Circle Worksheets

For Students 10th
In this geometry learning exercise, 10th graders calculate the area of circle give either the radius or the diameter. The one page interactive learning exercise contains ten questions. Answers and  hints are included. 
Interactive
Curated OER

Word Problems that involve Circles

For Students 9th - 12th
In this online math worksheet, students solve word problems the involve circles. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A terrific teaching tool!
Interactive
Curated OER

Area of Shaded Regions that involve Circles

For Students 9th - 12th
In this online math worksheet, students determine the area of shaded regions within a circle. This excellent resource allows the students to check their answers, and to get "hints" should they run into difficulties. A terrific teaching...
Worksheet
Curated OER

Circles Area Perimeter and Circumference

For Students 5th - 6th
In this circles activity, students calculate to find the area, radius, circumference and perimeter of circles. A reference web site is given for additional activities.
Worksheet
Curated OER

Circles: Finding Circumference

For Students 9th - 12th
In this circles worksheet, students find the circumference of 20 circles.  Students find the circumference given the radius, diameter, and area of various circles.
Worksheet
Curated OER

Circle Area, Perimeter and Circumference

For Students 6th - 8th
In this area, perimeter, and circumference worksheet, students 7 questions that require them to fill in 7 blank circles with the information they are provided and calculate the desired answers.
Interactive
Curated OER

My Test Book: Area and Perimeter

For Students 5th - 8th
In this online interactive math skills activity, students solve 10 multiple choice math problems regarding area, perimeter, and circumference. Students may submit their answers to be scored.
Lesson Plan
Curated OER

Match The Graph Circles

For Teachers 9th - 12th Standards
High Schoolers engage in a study of circles and graphs that are related with the focus upon finding the center and radius. The lesson includes the suggestion of giving homework using circle problems before this one to create background...
Worksheet
Curated OER

Surface Area of Cylinder Worksheet

For Students 6th - 8th
In this surface area worksheet, students are given either the diameter or radius and the height of 8 cylinders. They calculate the surface area.
Lesson Plan
Curated OER

Moving On: Octagoning the Circle

For Teachers 3rd - 8th
Students explore circles through the use of octagons. They inscribe a circle in a regular octagon and find the area and perimeter of the hexagon with respect to the radius of the circle. Students present their findings to the class.
Worksheet
Curated OER

All About Circles Post Test

For Students 7th - 9th
In this geometry instructional activity, students answer ten multiple choice facts about circles. The questions include finding the diameter, area, and radius of a circle.
Lesson Plan
Curated OER

Finding Areas of Triangles, Rectangles, and Circles

For Teachers 9th - 10th
Students find the areas of geometric shapes. In this geometry lesson students find and measure the sides, perimeters, and areas of quadrilaterals, triangles, and circles. Students relate the measures to the others by using formulas.
Worksheet
Curated OER

Area of 2D Shapes

For Students 9th - 12th
In this area worksheet, students commence solving for area of squares and rectangles, and continue to parallelograms and triangles, and continue again to rhombi and trapezoids and finish with circles, polygons, and shaded...
Lesson Plan
Curated OER

Let's Gather Around the Circle

For Teachers 9th - 12th Standards
Scholars explore the relationship between circumference and diameter. Groups of learners measure the diameter and circumference of round objects and record their data on a given worksheet. They then input the data into their graphing...
Worksheet
Curated OER

Areas and Probabilities

For Students 9th - 12th
For this area and probability worksheet, students solve 5 problems where they find the probability of an event occurring. They also use a given photograph of the moon's surface to find the area covered by craters and determine the...
Lesson Plan
Curated OER

Finding the Area Under A Curve with Random Probability

For Teachers 11th - Higher Ed
Students explore the concept of area under a curve. In this area under a curve lesson, students find the area under a curve using the Monte Carlo method using random points and probability. Students calculate the area under the same...
Worksheet
Curated OER

Area Review

For Students 9th - 10th
For this geometry worksheet, students calculate the area and different polygons such as squares, parallelogram, and rectangles. There are 15 questions with an answer key.
Worksheet
Curated OER

Spheres Homework

For Students 8th - 10th
In this spheres worksheet, students determine the volume and area of spheres when given the diameter or radius.  This one-page worksheet contains 10 multi-step problems.
Lesson Plan
Curated OER

Square Circles

For Teachers 6th - 7th
Young scholars analyze and demonstrate how a circle can be measured in square units and examine how diameter, circumference and radius are related.
Assessment
Bowland

Fruit Pies

For Teachers 6th - 9th
Scholars use formulas for the area of a circle and the area of a rectangle to determine the number of pies a baker can make from a particular area of dough. They must also take into account rolling the remaining dough into a new sheet.
Activity
101 Questions

Apple Mothership

For Teachers 9th - 12th Standards
Explore Apple's spaceship office building. Built in the shape of a circle, the office building offers a unique floor plan challenge. Young scholars use the dimensions of the building to estimate the square footage for each employee. 
Workbook
1
1
Utah Education Network (UEN)

Geometric Figures and Scale Drawings

For Students 7th Standards
Scale up your lessons on geometry and ask learners to investigate conditions on triangles, scale drawings, the area and circumference of circles, and angle relationships. The resource includes activities and a homework assignment.
Performance
Radford University

“Putt-Putt” For The Geometry of It!

For Teachers 9th - 12th Standards
Take a swing at the task. Using their knowledge of polygons and solids, scholars design one hole of a miniature golf course. They calculate areas and perimeters, determine the cost of building the holes, make scale drawings, and create...

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