Lombard and Vermont Streets in San Francisco are two of the most crooked streets in the U.S. We will use Sketchpad and Nspire CAS to explore sinuosity, a ratio used to measure the crookedness of these streets, of rivers, and of y = sin x. Connections to mathematical topics will include trigonometry, circles, distance between two points, and arc length.

Presentation Format: 9-12 Session
Grade Band Audience: Preservice and Inservice, 9 to 12