In 10-Minute-Math’s blog, Fibonacci Right Outside, the presence of the Fibonacci sequence in nature is discussed. For those who don’t know, the Fibonacci sequence is Fn=Fn-1+Fn-2 where Fo=0 and F1=1. It looks something like (0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, … ).

In the blog, 10-Minute-Math tells of how he grew sunflowers to see if their seeds actually did follow the Fibonacci sequence, or if it was just really close. To his surprise, they appeared to be a perfect Fibonacci sequence, spiraling clockwise 55 times, and counterclockwise 34 times. See the picture below.

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I have read the same article with you, but I don’t quite understand how this writer found Fibonacci sequence inside this sunflower. How does he determine(or maybe counting) the times of clockwise or counterclockwise? How are the times of clockwise or counterclockwise related to Fibonacci sequence? Do my questions make sense to you??

The Fibonacci numbers have so many interesting applications, especially in nature. For example, Alyssa and I found that they are one of the many number systems you can use in binary operations for abstract algebra! Sounds interesting.

He made the spirals by putting dots on every seed of the sunflower. It relates to the Fibonacci sequence because 34 is followed by 55 in the Fibonacci sequence. I think it may also be related to the shape of the spirals of the seeds in a sunflower.