GEO.6 Circles

Beginning Lesson

Aws4 request&x amz signedheaders=host&x amz signature=6860a55155a07dc205d2e2914058be3f13f6c1a4c55f89806315e3463e89a559

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=5fdb9fcd28d924cb0bce745ad907776487afc736134a816f9ec4ed649d4ef1be

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=4bda765e9bd0d32917baf77e842ba38da355a4555f70e68c5a7dcbccc122f9ba

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)