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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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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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Worksheet
Curated OER

Challenge: Skills and Applications Lesson 1.7

For Students 9th - 10th
In this geometry worksheet, learners find the circumference of a circle. They find the perimeter and area using the correct formula. There are 8 questions.
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Lesson Plan
Thinkport Education

Math by Design: Circumference and Area of a Circle [Pdf]

For Teachers 9th - 10th Standards
Students will discover how to estimate and measure the circumference and area of a circle.