Two vehicles move at a constant rate of speed toward each other, but when exactly will they pass? Pupils use still images from a video to determine the rate of speed and when the two cars meet. Then, they watch the complete video to learn the correct answer.

Concepts

constant rate, linear functions, system of equations word problems

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Additional Tags

math

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Instructional Ideas

• Use included clues to determine where the video was taken (which side of the street the cars drive on for one)
• How could police apply the same mathematical formula to stop a stolen vehicle?

Classroom Considerations

• Relies on prior knowledge of rate formulas and systems of equations

Pros

• Students solve the problem using various math models
• Versatile lesson great as homework, group work, or completed independently in class

Cons

• None

Common Core

8.EE.B.5 8.EE.C.8.a HSN-Q.A.2 HSA-CED.A.3