What's the biggest mathematical mystery in nature? Fibonacci numbers! The pattern creeps up in the most unexpected places. It's clear that math holds secrets to nature and that nature holds secret numbers.

Leo is totally fixated on numbers and counting everything, even the words in the story the teacher reads; Lea is the shy new girl who shares his desk, and spends all her time drawing--but one day, in the noise of the playground, an accident brings them and their obsessions together in the beginning of a friendship.

A biography of Leonardo Fibonacci, the 12th century mathematician who discovered the numerical sequence named for him.

In 2000, Keith Devlin set out to research the life and legacy of the medieval mathematician Leonardo of Pisa, popularly known as Fibonacci, whose book Liber abbaci has quite literally affected the lives of everyone alive today. Although he is most famous for the Fibonacci numbers--which, it so happens, he didn't invent--Fibonacci's greatest contribution was as an expositor of mathematical ideas at a level ordinary people could understand. In 1202,...

Discrete mathematics is a subject that--while off the beaten track--has vital applications in computer science, cryptography, engineering, and problem solving of all types. Discrete mathematics deals with quantities that can be broken into neat little pieces, like pixels on a computer screen, the letters or numbers in a password, or directions on how to drive from one place to another. Like a digital watch, discrete mathematics is that in which numbers...