GEO.6 Circles

Beginning Lesson

Aws4 request&x amz signedheaders=host&x amz signature=1ad33b780e9249a7e88ea0db7d4b85e5e4b7bbdca3b9ee5160b94a81b84b5b12

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=23c5dafa15b16b191383f69da9820b4913fcd6d514176cbb34ace48c6d86f521

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=7ccfed36e6ac1e3c9dbabb3b035b86c575f2fa4804bead9ce154705800366ca8

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)