Checking the Speedometer Maya’s family bought a new car. Her mother asks Maya for help to make sure the speedometer is working. To check the speedometer, Maya’s mother drives the car down a long, straight highway. On the side of the highway there is a marker for every mile. As Maya’s mother drives at a constant speed, Maya writes down the time when they pass each of the numbered markers. Maya records the information in the data table shown below. Place an X next to all of the ways that Maya could use the information in the data table to calculate the speed of the car below: ____

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____

___

___

___

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___

___

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___ None of these would work!

Mile Marker 10 mi 11 mi 12 mi 13 mi 14 mi

Time (hour : minute)

2:00pm 2:01pm 2:02pm 2:03pm 2:04pm

Describe your thinking about how you can find the speed of the car:

Checking the Speedometer Maya’s family bought a new car. Her mother asks Maya for help to make sure the speedometer is working. To check the speedometer, Maya’s mother drives the car down a long, straight highway. On the side of the highway there is a marker for every mile. As Maya’s mother drives at a constant speed, Maya writes down the time when they pass each of the numbered markers. Maya records the information in the data table shown below. Place an X next to all of the ways that Maya could use the information in the data table to calculate the speed of the car below: ____

___

____

___

___

___

____

___

___

___

___ None of these would work!

Describe your thinking about how you can find the speed of the car:

Mile Marker 10 mi 11 mi 12 mi 13 mi 14 mi

Time (hour : minute)

2:00pm 2:01pm 2:02pm 2:03pm 2:04pm