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Subject:   arc length
Author: Kilroy
Date: Apr 7 2004

and as a special bonus

Well, let's compare and contrast. One "applet" is basically a power-point
demonstration of a derivation. It shows the same derivation every time, and
assumes a certain level of calculus knowledge going in. The other is a
visualization that shows moderately flexible approximations of several pre-set
functions-- approximations that make little sense and are virtually

These feel like a cart without a horse and a horse without a cart. The
power-point "applet" illustrates a mechanical method with extreme precision:
you learn exactly what you need to know and no more. The visualization allows
you to play around, but you don't understand what it is you're playing with--
and therefore you don't learn anything.

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