Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsFilling Cone, Hemisphere and Cylinder: Easy as 1:2:3http://demonstrations.wolfram.com/FillingConeHemisphereAndCylinderEasyAs123/]]>http://demonstrations.wolfram.com/FillingConeHemisphereAndCylinderEasyAs123/Euclid's Formula and Properties of Pythagorean Tripleshttp://demonstrations.wolfram.com/EuclidsFormulaAndPropertiesOfPythagoreanTriples/]]>http://demonstrations.wolfram.com/EuclidsFormulaAndPropertiesOfPythagoreanTriples/Fractional Graphs and Flowershttp://demonstrations.wolfram.com/FractionalGraphsAndFlowers/]]>http://demonstrations.wolfram.com/FractionalGraphsAndFlowers/