How Fibonacci Introduced The World To Numbers : NPR

To carry out their calculations, merchants in the early 13th century used an abacus or a system called finger reckoning. Commerce changed when Leonardo of Pisa — known today as Fibonacci — published the first arithmetic textbook. Mathematician Keith Devlin talks about the history of arithmetic and his new book "The Man of Numbers: Fibonacci’s Arithmetic Revolution."

http://www.npr.org/2011/08/12/139579620/how-fibonacci-introduced-the-world-to-numbers?ft=1&f=1007

Also huffduffed as…

  1. How Fibonacci Introduced The World To Numbers : NPR

    —Huffduffed by hugo on August 17th, 2011

  2. How Fibonacci Introduced The World To Numbers : NPR

    —Huffduffed by briansuda on August 17th, 2011

  3. How Fibonacci Introduced The World To Numbers : NPR

    —Huffduffed by hawbsl on August 17th, 2011

  4. How Fibonacci Introduced The World To Numbers : NPR

    —Huffduffed by mharry9999 on August 22nd, 2011

  5. How Fibonacci Introduced The World To Numbers : NPR

    —Huffduffed by markhulme on August 22nd, 2011

  6. How Fibonacci Introduced The World To Numbers : NPR

    —Huffduffed by jasedit on August 29th, 2011

  7. How Fibonacci Introduced The World To Numbers : NPR

    —Huffduffed by gruner on August 30th, 2011

  8. How Fibonacci Introduced The World To Numbers : NPR

    —Huffduffed by Torvald on September 5th, 2011

  9. How Fibonacci Introduced The World To Numbers : NPR

    —Huffduffed by imp on September 16th, 2011

  10. How Fibonacci Introduced The World To Numbers : NPR

    —Huffduffed by irkman on September 19th, 2011

  11. How Fibonacci Introduced The World To Numbers : NPR

    —Huffduffed by tribehut on October 18th, 2011

Possibly related…

  1. The Way You Learned Math Is So Old School : NPR

    If you’re a parent of a certain age, your kids’ homework can be confounding. Blame it on changes in the way children are taught math these days — which can make you feel like you’re not very good with numbers.

    http://www.npr.org/2011/03/05/134277079/the-way-you-learned-math-is-so-old-school?sc=tw

    —Huffduffed by zzot 3 years ago

  2. The Golden Ratio

    Episode three of Five Numbers, the BBC radio series presented by Simon Singh.

    Divide any number in the Fibonacci sequence by the one before it, for example 55/34, or 21/13, and the answer is always close to 1.61803. This is known as the Golden Ratio, and hence Fibonacci’s Sequence is also called the Golden Sequence. Unlikely though it might seem, this series of numbers is the common factor linking rabbits, cauliflowers and snails.

    —Huffduffed by adactio 4 years ago

  3. The Golden Ratio

    Episode three of Five Numbers, the BBC radio series presented by Simon Singh.

    Divide any number in the Fibonacci sequence by the one before it, for example 55/34, or 21/13, and the answer is always close to 1.61803. This is known as the Golden Ratio, and hence Fibonacci’s Sequence is also called the Golden Sequence. Unlikely though it might seem, this series of numbers is the common factor linking rabbits, cauliflowers and snails.

    —Huffduffed by srushe 4 years ago