Fibonacci

Fibonacci's full name was Leonardo of Pisa, (or Leonardo Pisano in Italian). He was born in Pisa, Italy. He was born in the year 1182. He died in the year 1226. His name was short for Filius Bonacci, which means the son of Bonacci. He combined two of his names to get Fibonacci. He combined Filius and Bonacci. His nickname might mean "Lucky Son". Fibonacci was one of the greatest mathematicians of the Middle Ages. He met many merchants and learned their system of arithmetic. Fibonacci invented the Fibonacci numbers.

Fibonacci numbers are a pattern of numbers. The sequence is as follows: add the last two numbers together to get the next number in the pattern. The Fibonacci numbers are: 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, and so on. (i.e. Fx=Fx-1+Fx-2 or F3= F2+F1) Fibonacci wrote his numbers in a book called Liber Abacci.

You can find Fibonacci numbers in everyday life. Here are some examples:

If you count the leaves on a plant like daisies, you will find a Fibonacci number. The number of petals on a daisy or the number of leaves on a daisy will also be a Fibonacci Number if the plant is intact.

Fibonacci also invented another pattern with math, "The Rabbits Problem". The Rabbits Problem is if you start with one pair of rabbits, how many pairs will there be after one year if they reproduce in a Fibonacci sequence? The assumptions are: 1) In the first month a pair of rabbits do not mate. 2) The rabbits have a pair of babies in the second month and all the rest of the months. 3) Each pair is made up of a male and a female.  First, you try and figure it out, then check your answer.

If you look at the bottom of a pinecone you can see a spiral of Fibonacci Numbers. The way you can find it is by counting where the spiral ends on the bottom of the pinecone.

Fibonacci numbers also appear in Pascal's triangle. By adding the numbers from left to right on a diagonal, you can obtain a Fibonacci sequence.

Fibonacci never expected to get famous. Fibonacci's sequence became famous in the 19th century when Edouard Lucas discovered the Fibonacci numbers when he was exploring a book written by Fibonacci.

To learn a trick with Fibonacci numbers