A downloadable demonstration which provides practice for finding quadratic curves of best fit. The download contains ActiveX controls, which may not load on some school networks. (
http://demonstrations.wolfram.com/LinearAndQuadraticCurveFittingPractice/
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The applet on this page helps you discover what effects changes in a, b, and c have in the equation . (
http://www.mathsnet.net/asa2/2004/c12quad.html
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