Using a similar process from the first lesson in the series of finding area approximations, a measurement resource develops the proof of the area of a circle. The problem set contains a derivation of the proof of the circumference formula. 

Concepts

area, area model, area of polygons

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Additional Tags

math

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Instructional Ideas

• Consider using a geometry sketching application to create the figures
• Have different groups determine the areas of the inscribed and circumscribed polygons and create a large class chart with the measurements

Classroom Considerations

• Limit notation and concept may be unfamiliar to some
• The fourth lesson in a 14-part series

Pros

• The resource provides scaffolding suggestions throughout
• Exit ticket contains sample solutions

Cons

• None

Common Core

HSG-GMD.A.1 MP1 MP2 MP3 MP7