Sascha's bike ride problem involves computing his average and steady rates of speed over different sections of a 28-mile trip. Students are asked to write down what they know about Sascha's trip, share with the class, and work in groups to answer questions about how to calculate rates of speed, what different rates indicate, and how to determine the time it would take someone traveling at a steady rate to match Sascha's total distance.

1. Agenda Monday, March 15 Homework 26 C&S p. 41 # 4 - 8 Bloggers: Mon Tues Wed Thurs Fri Finish: Sascha's Bike Ride - Problem 3.2

3. Problem 3.2 ·Write down EXACTLY what you know about Sascha’s trip. ·Share answers as a class. ·Work in groups to complete Problem 3.2

8. How did you compute the rates in Part A? What do your answers to Part A tell you? Do you think that his speed was constant throughout each time interval? Why or why not? Say in your own words what “average” rate of speed means? What does a steady rate of speed mean? How can you tell when he is going faster if you compute miles per minute? How can you tell when he is going faster if you compute minutes per mile? What computation did you perform to find how long it would take you to travel the 28 miles Sascha traveled if you are going 13 mph? Why? What strategy did you use to find a steady rate that would tie Sascha? How can you match the parts of the trip to the conditions of the path? Explain.