HSIII.4 Circles (G6)

Beginning Lesson

Aws4 request&x amz signedheaders=host&x amz signature=d47c43f9a00f165cb0181bd9e48bf010615203832a68fcdb7740b7d058d36cf5

Triplets of Cellville

How do cell phone towers identify your location? Students describe geometrically the location information provided by a cell phone tower, explain why loci from at least three towers are required to pinpoint a customer's location, and consider the tradeoff between coverage and "locatability" when a phone company chooses a new tower location.

Topic: Congruence (CO), Modeling with Geometry (MG)

Middle Lesson

Aws4 request&x amz signedheaders=host&x amz signature=27f1e3ff733d98a4d6865295248619607fde94b692466781d7e0f513c2feb67e

Axle Roads

How do vehicles turn? In this lesson, students use the geometry of circles to understand how we get from point A to point B when the path isn’t a straight one.

Topic: Modeling with Geometry (MG)

End Lesson

Aws4 request&x amz signedheaders=host&x amz signature=22948ab2e31fba2a86f866b27d6bc5cdc9b3ecea4c7af4a9e7214382d3a25daa

As the World Turns (HS)

How fast is the Earth spinning? Students use rates, arc length, and trigonometric ratios to determine how fast the planet is spinning at different latitudes.

Topic: Circles (C), Similarity, Right Triangles, and Trigonometry (SRT)