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Activity: Spikes and Spears: an interactive Lab on Rational Functions
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Description: Activity using an applet that helps students predict the shape of the graph of a rational function, and in particular to locate its various vertical asymptotes (spikes) and its horizontal or slant asymptotes (spears). Includes links to help files for the applet.
Technology Type: Java Applet 
Author: Alan Cooper
Language: English 
Cost: Does not require payment for use

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Tool: Graph Explorer
Courses: PreCalculus rational, asymptotes

Comment:I like the chatty approach, and the instantaneous (and colorful) graphical display.