# Circle

• ### Relating Area to Circumference: IM 7.3.8

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GeoGebra Classroom Activities

• ### Stained-Glass Windows: IM 7.3.11

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GeoGebra Classroom Activities

• ### Slopes Don't Have to be Positive: IM 8.3.9

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GeoGebra Classroom Activities

• ### Applying Area of Circles: IM 7.3.9

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GeoGebra Classroom Activities

• ### Applying Circumference: IM 7.3.4

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GeoGebra Classroom Activities

• ### Exploring Circles: IM 7.3.2

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GeoGebra Classroom Activities

• ### Distinguishing Circumference and Area: IM 7.3.10

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GeoGebra Classroom Activities

• ### Circumference and Wheels: IM 7.3.5

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GeoGebra Classroom Activities

• ### Exploring Circumference: IM 7.3.3

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GeoGebra Classroom Activities

• ### Exploring the Area of a Circle: IM 7.3.7

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GeoGebra Classroom Activities

• ### Estimating Areas: IM 7.3.6

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GeoGebra Classroom Activities

• ### Circle Area (By Peeling!)

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Tim Brzezinski

• ### Area of Circles

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Anthony OR 柯志明

• ### Circles (Theorems)

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Tim Brzezinski

• ### Circle Terminology

Activity

Tim Brzezinski

• ### Circle vs. Sphere

Activity

Tim Brzezinski

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Edward Knote

• ### Unit Circle and Sine Graph

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Anthony OR 柯志明

• ### Conic Section Explorations

Activity

Tim Brzezinski

• ### Properties of Tangents Drawn to Circles (A)

Activity

Tim Brzezinski

• ### Conic Sections

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Tim Brzezinski

• ### Where in NYC? (VC)

Activity

Tim Brzezinski

• ### Area of a Circle - Wedge/Sector Demonstration

Activity

Linda Fahlberg-Stojanovska

• ### Equation & Graph of a Circle

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Tim Brzezinski