Wolfram Demonstrations Projecthttp://demonstrations.wolfram.com/An Open Resource of Interactive Mathematica VisualizationsCopyright 2009 Wolfram Demonstrations Project & ContributorsThe Fibonacci Spiral and the Fibonacci Sequencehttp://demonstrations.wolfram.com/TheFibonacciSpiralAndTheFibonacciSequence/]]>http://demonstrations.wolfram.com/TheFibonacciSpiralAndTheFibonacciSequence/