Using Points to Measure: Watch It!
In this video, you will meet Harry, who is planning to ride his unicycle, a one-wheeled bike, to his grandmother’s house. Before he begins his trip, he creates a distance–time graph to show how far along he expects to be at different times during his ride. Harry knows he can ride 5 miles in 1 hour. He marks three points on his graph to predict how far he will be after 1, 2, and 3 hours of riding his unicycle. The straight line that he draws through the three points shows his expected distance at different times during the trip.
Click to watch the video. After watching, look at the graph of Harry's prediction and then answer the question below.
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Using Points to Measure
Harry predicts that if he can cycle 5 miles in 1 hour, he can travel 20 miles in 4 hours. What do you think might be a problem with this prediction? Do you think that Harry can travel at the same speed for 4 straight hours? Why or why not? Write your answer in two to three sentences.
