Brandan is always on the lookout for examples of the Fibonacci series in nature. Named for the Italian mathematician who discovered the series, the pattern is derived by starting with 1, adding 1+1 to get 2, then 1+2 to get 3, then 2+3 to get 5. The series continues by adding the 2 numbers just previous to get the next number of the series (1, 1, 2, 3, 5, 8. . .) The numbers in the Fibonacci series show up repeatedly in nature-- the number of sides on a banana or petals on a flower or spirals in a seashell or spirals on a head of cauliflower or spirals on a sunflower. The seeds on a sunflower head form spirals in two directions. Brandan counted the spirals on this head and found 34 spirals like the 2 green lines on the left and 55 spirals like the lines on the right-- both Fibonacci numbers.
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