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1. The Birth of a Blockhead

This month, I happily cede my space on this blog to a friend and former Scholastic colleague, Joe (Joseph) D'Agnese, in honor of the upcoming publication of his long-awaited picture book, Blockhead: The Life of Fibonacci (Holt BYR) on March 30. Enjoy!

--Sue Macy

I have a confession to make. I don't belong here. I wanted to write a nonfiction book, honest, but something got the better of me: a divine being more powerful than us all.


In 1996, I was floundering with a manuscript on the life of the medieval mathematician Leonardo of Pisa, better known as Fibonacci. Leonardo helped convert Europe from I-II-III to 1-2-3, and bequeathed to us the world's most important nonentity:
zero. Without it, we'd have no concept of place value. He is best known for a problem about multiplying rabbits, and the number pattern derived from it called the Fibonacci Sequence.

My dilemma was two-fold: First, Leonardo never knew that Fibonacci numbers recur in nature. Either I wrote about Fibonacci or I wrote about the Sequence. I had trouble unifying the two because it didn't happen that way.

Second, facts on Leonardo's life are sparce: He grew up in Pisa, sailed to Algeria to keep his merchant father's accounts, and later traveled the world studying mathematics. A few of his math tomes have survived, but they tell us little of his internal life. To write a picture book about him, one ought to know what made him tick.

What, I wondered, drives a person to chase numbers across the seas?

I was intrigued by Leonardo's Latin nickname, Bigollus. A funny name could make a good book title, but I couldn't find an authoritative translation. The Fibonacci Association offered an expert. I dreaded making that call. I'm not a mathematician. Indeed, who was I to write such a book?

Herta Taussig Freitag, a professor emeritus of mathematics, took the call in Virginia. She had a thick German accent, and proved to be a delightful, friendly, patient person who was tickled to be speaking with a (then) editor of a math magazine for children. She had wanted to be a teacher of mathematics since age 12. We had a long chat, and she reassured me that no one was satisfied with the translation of Fibonacci's nickname. It could mean "wanderer," "daydreamer," or

5 Comments on The Birth of a Blockhead, last added: 3/7/2010
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