Discussion:  All in Calculus for Arc length 
Topic:  Explains nothing. . . 
Related Item:  http://mathforum.org/mathtools/tool/2345/ 
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Subject:  Explains nothing. . . 
Author:  tpowers 
Date:  Jul 12 2004 
its explanation of the topic; i.e., there's nothing to which the student can
refer. It assumes you already know what is going on, but once you already know
that, what is the point of the applet?
 
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