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Lesson Plan
Curated OER

Circles and Pi

For Teachers 9th - 11th
Students identify the relationship between the radius and Pi. In this geometry activity, students calculate the circumference and area of a circle. They create visuals to help them see how the circumference relates to Pi.
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Worksheet
Curated OER

Solving Problems

For Students 10th - 12th
For this solving problems worksheet, students determine the area of a rectangle inscribed in a circle. They estimate distance between given planets. This two-page worksheet contains 2 multi-step problems.
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Worksheet
Curated OER

Calculate the Radius

For Students 6th - 12th
In this radius worksheet, students calculate the radius of a circle when the area is given to them. Students complete 5 problems total.
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Workbook
1
1
University of Utah

Geometry Part 2: Measurement in 2- and 3-Dimensions, Plane Sections of Solids

For Students 7th Standards
What kind of tree does a math teacher climb? A geometry! Here is a lesson that includes all the geometry resources you could ever wish for in one comprehensive workbook. Class members demonstrate what they have learned by determining the...
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Lesson Plan
Illustrative Mathematics

Designs

For Teachers 6th - 8th Standards
A resource that makes for excellent group work as students explore the area and perimeter of different complex designs made up of squares and circles. The commentary gives a clear definition of perimeter, but suggests that group members...
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Lesson Plan
Curated OER

An Introduction to Pi and the Area of a Circle

For Teachers 5th - 7th
Young scholars explore measurements of a circle. In this lesson about circumference and radius, students practice calculating measurements of a circle. Young scholars estimate, calculate, and practice with graphing all while learning...
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Interactive
Curated OER

Circles

For Students 10th
For this geometry worksheet, 10th graders determine the circumference and area of a circle given either the diameter or the radius. The one page interactive worksheet contains ten questions. Answers and hints are included. 
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Lesson Plan
Curated OER

Area, Perimeter, Circumference

For Teachers 6th
Sixth graders use different measuring tools to measure area, perimeter, and circumference of different shapes. For this measurement lesson plan, 6th graders measure parallelograms, triangles, and circles.
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Lesson Plan
Curated OER

Math and Circumference

For Teachers 6th
Sixth graders explore geometry by utilizing mathematical formulas. In this circumference activity, 6th graders identify the difference between diameter, circumference and radius in a circle. Students review the formulas for finding...
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Worksheet
Curated OER

Circles and Their Equations

For Students 6th - 7th
In this circle and their equations worksheet, students read about circles and algebraic equations, look at examples and complete exercises.
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Worksheet
Curated OER

Worksheet 8: Absolute Percentage Error

For Students Higher Ed
In this absolute percentage error worksheet, students estimate the maximum absolute error in computing the volume and area of a cube or a sphere. They use differentials to estimate the value of roots. This one-page worksheet contains...
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Worksheet
Curated OER

Formulas Homework

For Students 9th - 12th
In this circle formulas activity, high schoolers solve 20 fill in the blank problems. Students find the radius, diameter, circumference, area, arc length, and sector area of a circle.
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Lesson Plan
Curated OER

The Surface Area of a Cylinder

For Teachers 8th - 10th
Students find the circumference and diameter of several circles and calculate the surface area of cylinders. In this surface area of a cylinder lesson plan, students use rectangles and lids to make several cylinders. They calculate the...
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Lesson Plan
Curated OER

Discovering Pi

For Teachers 9th - 10th
Students relate Pi to a circle. In this circles lesson, students identify the different properties of two dimensional objects. They relate Pi to the circumference, diameter and area of a circle .
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Lesson Plan
Curated OER

Approximation of Pi

For Teachers 9th - 12th
Students explore the concept of Pi.  For this Pi lesson, students measure the circumference and diameter of a circle.  Students record the diameter and circumference measurements from their classmates.  Students enter the data into lists...
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Lesson Plan
Curated OER

Area Unit

For Teachers 9th - 11th
Students solve the area for parallelograms,squares, rectangles, trapezoids, and triangles. In this geometry lesson, students compare and contrast two dimensional shapes and apply their properties to solving real life scenarios. This is a...
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Lesson Plan
Willow Tree

Perimeter of Common Geometric Figures

For Students 8th - 11th Standards
Help learners understand that perimeter and circumference are one in the same. Learners apply their skills to determine the perimeter/circumference of triangles, rectangles, and circles. They then use the same strategy to find the...
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Assessment
Noyce Foundation

Which is Bigger?

For Teachers 6th - 7th Standards
To take the longest path, go around—or was that go over? Class members measure scale drawings of a cylindrical vase to find the height and diameter. They calculate the actual height and circumference and determine which is larger.  
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Lesson Plan
EngageNY

Decimal Expansion of Pi

For Students 8th Standards
Develop a better understanding of the value of pi. Learners explore the area of a circle using estimation and graph paper. While continuing to estimate the area of the circle using smaller and smaller grids, the number pi emerges. 
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Assessment
1
1
CCSS Math Activities

Smarter Balanced Sample Items: 7th Grade Math – Target F

For Teachers 7th Standards
Sometimes it's how you ask the question that counts. The sixth installment of nine from the Smarter Balanced Claim 1 Slideshow series presents a set of 13 questions to assess understanding of angle relationships as well as area and...
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Activity
Illustrative Mathematics

Paper Clip

For Teachers 9th - 11th Standards
With minimal setup and maximum freedom, young geometers are encouraged to think outside the box on a seemingly simple application problem. Though the task seems simple, measuring a given paper clip and finding how many 10 meters can...
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Unit Plan
PBS

Accessible Shapes

For Teachers 6th - 8th Standards
All the 2-D and 3-D measurement work you need is in one location. Divided into three sections, the geometry lesson plans consist of visualization of three dimensions, classifying geometric figures, and finding surface area and volume....
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Worksheet
Curated OER

Circles

For Students 9th - 10th
In this geometry activity, students solve problems by finding the diameter, radius and chord of a circle. They also solve for the area of the circle. There are 10 questions with an answer key.
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Lesson Plan
Curated OER

Circles

For Teachers 10th
Tenth graders explore and define the radius and diameter of a circle. In this geometry lesson, 10th graders calculate the circumference and area of a circle using real world objects and shapes. They discuss chords and lines tangent to a...

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