GEO.6 Circles

Beginning Lesson

Aws4 request&x amz signedheaders=host&x amz signature=89d4a05faad6df3e9d5cb4330c8d3a722e7f123df4d2ef1d6c9c6c7562adf549

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=230dc56f8fe7be26e50b542235ba286c46e5600b7f788bdf2015af4cb749806b

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=f545bc524ec3e6c4ec3f39546c772c3f97dae196eacdead7fe4478a2a797d675

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)