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Fibonacci Numbers a huge award-winning collection of information on Fibonacci numbers (0,1,1,2,3,5,8,13,21,...) and the Golden section ( 0.61803... and 1.61803...) which gets more than 5000 visits per day to the index (first) page alone! Egyptian Fractions explains how the Egyptians and Babylonians of 3000 BC represented fractions and how they used them.
We can find interactive sites on the internet (like this ) to draw points, move them, and check how the structure becomes updated in real time. In fact, if we have a series of random dots scattered in the plane, the best way of finding the correct Voronoi Telesación for this set is using the Delaunay triangulation. And in fact, this is precisely the idea shown on the animation: first the Delaunay Triangulation and then, subsequently, the Voronoi Tessellation .