Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsHow Many Right Triangles Can You Find?http://demonstrations.wolfram.com/HowManyRightTrianglesCanYouFind/]]>http://demonstrations.wolfram.com/HowManyRightTrianglesCanYouFind/Pompeïu's Theoremhttp://demonstrations.wolfram.com/PompeiusTheorem/]]>http://demonstrations.wolfram.com/PompeiusTheorem/Finite Difference Scheme for the Heat Equationhttp://demonstrations.wolfram.com/FiniteDifferenceSchemeForTheHeatEquation/]]>http://demonstrations.wolfram.com/FiniteDifferenceSchemeForTheHeatEquation/