Part 1: http://youtu.be/ahXIMUkSXX0
Part 3: http://youtu.be/14-NdQwKz9w
More on Angle-a-trons: http://www.youtube.com/watch?v=o6W6P8JZW0o
Here is a program that draws plant leaves at whatever angle you want: http://www.khanacademy.org/cs/plant-leaves/822940457
Note: Beautiful spirally non-Fibonacci pinecones are very rare! If you find one, keep it.
My personal website, which you might like: http://vihart.com
Tagged under: doodling,mathematics,spirals,flowers,plants,phyllotaxis,fibonacci,golden ratio,phi
Clip makes it super easy to turn any public video into a formative assessment activity in your classroom.
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