Doodling in Math Class: Spirals, Fibonacci, and Being a Plant [2 of 3]

Part 1: http://youtu.be/ahXIMUkSXX0
Part 3: http://youtu.be/14-NdQwKz9w
More on Angle-a-trons: http://www.youtube.com/watch?v=o6W6P8...

Here is a program that draws plant leaves at whatever angle you want: http://www.khanacademy.org/cs/plant-l...

Note: Beautiful spirally non-Fibonacci pinecones are very rare! If you find one, keep it.

• Category

  Education

[Abdul ElTawil]

He is also in our hearts.

[puppylubber123]

hmm... I'm wondering how you get your information if you don't pay attention in math... naw im just messing with ya. These are awesome btw

[Leonard Zuñiga]

So that explains why people have heart attack; He must be getting too fat inside the heart. o.O

[Inception1338]

I couldn't hear any uninteressting sentence. But a quiete profound one:

"Mathematics: simple rules, complex consequences."

I tried to define it myself: "Mathematics: The teachings of the Nature of things."

or "Mathematics: the univeral language"

but yours is ... can't describe it. It is soo accruat far behind awesomeness...

[FirethorneOrbLord]

But if each leaf is bigger than the leaf slightly above, that sort of ruins the points of phi leaves.

[oswald oo]

its like she's anti-ritalin

[Michelle Lonsdale]

She speeds them up I THINK! If not, then WOW she dos talk fast!

[lluvank]

You do good videos but you talk too fast!

[Friendios3]

our math teacher made us watch this. most of us were like wahhhh? speak so fast.... well english isn't our first. all and all, i liked your vids!

[soccershootout07]

i have yet to fully understand one of your videos.... i literally blanking stare at the screen,,, haha but these vids r really cool!

[kate lynahm]

yes.