Discussion:  Roundtable 
Topic:  Graphing in four quadrantsa tool search 
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Subject:  RE: Graphing in four quadrantsa tool search 
Author:  Mathman 
Date:  Oct 17 2004 
function;
http://padowan.dk/graph/
Also, Graphmatica, a superb 2D grapher, supports point graphs and regression
etc. More than enough, perhaps. Found at archives.math.utk.edu.
I used a plotting 'racecar' game that would give a good sense of the effects
causing change in 2 dimensions. Very simple rules, nice game for young teens.
Not numerical coordinate points as in the above, but a good sense of the effect
of two dimensional change as the 'cars' accelerate and decelerate [or not] while
changing direction around a curve. It's tough to describe here without images.
Email for more info if interested and I'll put together a more detailed
description.
David.
 
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