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Lesson 2: Changing Two Quantities

Kate and Christopher use the Races applet to figure out how to make two cars go the same speed when the cars travel different amounts of distance and time.

Episode 1: Making Sense

Kate and Christopher make sense of what going the same speed looks like in the Races applet.

Episode 2: Exploring

Christopher and Kate explore how to make the red car go the same speed as the blue car when the blue car travels 10 miles in 4 minutes. They create a table to record and test their conjectures.

Episode 3: Repeating Your Reasoning

The students continue their work from Episode 2 by looking for more distance and time values that will make the red car go the same speed as the blue car.

Episode 4: Repeating Your Reasoning

Kate and Christopher find how long the red car should take to travel 2.5 miles so that it goes at the same speed as the blue car, which travels 10 miles in 4 minutes.