Describe the distance time graphs below

Distance Time GraphsA visual aid for a teacher to use in a Mathematics lesson showing distance time graphs.If your students are new to distancetime graphs you might like to begin with the 'Helicopter View' animation. Class discussion might illuminate the fact that the steepness or gradient of the line graph is related to the speed of the vehicle. A positive gradient indicates a velocity away from the reference point while a negative gradient represents a velocity in the opposite direction. A gradient of zero represents the vehicle coming to rest. In the real world a more accurate graph of the situation would be a smooth curve rather than a number of straight lines. After viewing the graphs above have a look at the Hurdles Race for some fun. 

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