GEO.6 Circles

Beginning Lesson

Aws4 request&x amz signedheaders=host&x amz signature=a6355e0b86553e0858ca1244e6a5a19abbba62280df6b1aa661f8b2e68c35455

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=d427ea2fde34e00b82c5f1a0c1663c6f63ba7d4ee5e7ac9486fa64d3fbfd0804

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=99ffb711f481a162f2436d069b087a10fc76fa335b2711d4e7e18145868b618a

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)