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Topic: Graph Simulation (Running Tool)
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Subject:   Graph Simulation (Running Tool)
Author: Gnelly
Date: Jun 26 2006
Advantages of tool: Students can actually see that two points being "aligned" on
the y-axis) does not mean two quantities start from the same point
(y-intercept).
                    Students can see the slope of the line is the rate of
change.
                    Students can see the point of intersection is actually where
the runners are physically side by side.
                    Students see the connection between the physical actions and
the graphical representations.

Disadvantage:  Images may move too fast for some students.

Advantage of static graph: It is a more permanent picture that students can
review/restudy.

Students may be asked to manually graph some situations.            
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