Fibonacci Ratios (In Action)
 Shows how the Fibonacci Series and the Golden Ratio are related.

Binet Revisited (Proof)
 Goes back and examines Binet's Formula for Fibonacci numbers in a more Golden light.

One Over Eighty-Nine (Proof)
 The decimal approximation of 1/89 (0.0112359550...) can be found by using the Fibonacci Series; see how.

Apartment Buildings (Proof)
 Learn about the connection between the Fibonacci Series and this simple word problem about painting apartment buildings.

Nature
 I bet by this time you're wondering if the Fibonacci Series has anything to do with the real world. This page contains information on just that, appearances of the series in nature.

Leonardo da Vinci
 Shows how the famous Italian painter Leonardo da Vinci employed the Golden Ratio in his most famous paintings. After you've read through the pages in this section, take the "Applications" Quiz.

Random Fibonacci number from the 1st through the 200th:

All contents, unless otherwise specified, are © 1999 by Matt Anderson, Jeffrey Frazier, and Kris Popendorf.
Created by Team 27890 for the 1999 competition.