Monday, November 23, 2015

Fibonacci Day - 11/23

November 23 is Fibonacci Day

It is an annual holiday that honors one of the most influential mathematicians of the Middle Ages - Leonardo Bonacci.

Also known as Leonardo of Pisa, he is popularly known as Leonardo Fibonacci. Fibonacci is a contraction of filo Bonacci, meaning the son of Bonaccio.

November 23 is celebrated as Fibonacci day because when the date is written in the mm/dd format (11/23), the digits in the date form a Fibonacci sequence: 1,1,2,3. A Fibonacci sequence is a series of numbers where a number is the sum of the two numbers before it. 

For example: 1, 1, 2, a Fibonacci sequence. Here, 2 is the sum of the two numbers before it (1+1). Similarly, 3 is the sum of the two numbers before it (1+2).

Fibonacci Day Resources

Fabulous Fibonacci - includes a PDF lesson plan

Fibonacci Seuence - BrainPop

The Ultimate Resource on the Fibonacci Sequence

Fibonacci Day FREE Printable 

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