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Doodling in math: Spirals, Fibonacci, and being a plant [1 of 3]

Part 2: http://youtu.be/lOIP_Z_-0Hs Part 3: http://youtu.be/14-NdQwKz9w Re: Pineapple under the Sea: http://youtu.be/gBxeju8dMho. Created by Vi Hart.