As a young boy in medieval Italy, Leonardo Fibonacci thought about numbers day and night.
The boy who was once teased for being a blockhead had discovered what came to be known as the Fibonacci Sequence Blockhead is a 2011 Bank Street - Best Children\'s Book of the Year..
Then he realized that many things in nature, from the number of petals on a flower to the spiral of a nautilus shell, seem to follow a certain pattern.
When Leonardo grew up and traveled the world, he was inspired by the numbers used in different countries.
He was such a daydreamer that people called him a blockhead.
As a young boy in medieval Italy, Leonardo Fibonacci thought about numbers day and night