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Description
Blockhead: The Life of FibonacciAs a young boy in medieval Italy, Leonardo Fibonacci thought about numbers day and night. He was such a daydreamer that people called him a blockhead. When Leonardo grew up and traveled the world, he was inspired by the numbers used in different countries. 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. The boy who was once teased for being a
As a young boy in medieval Italy, Leonardo Fibonacci thought about numbers day and night. He was such a daydreamer that people called him a blockhead.
When Leonardo grew up and traveled the world, he was inspired by the numbers used in different countries. 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. 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.Binding Type: Hardcover
Publisher: Henry Holt & Company
Published: 03/30/2010
ISBN: 9780805063059
Pages: 40
Weight: 0.97lbs
Size: 11.26h x 8.88w x 0.35d
Review Citations: Booklist 01/01/2010 pg. 73
Kirkus Review - Children 02/15/2010
Publishers Weekly 02/22/2010 pg. 64
School Library Journal 03/01/2010 pg. 138
Horn Book Magazine 05/01/2010 pg. 105
Bulletin of Ctr for Child Bks 07/01/2010
New York Times Book Review 08/15/2010 pg. 13
Hornbook Guide to Children 07/01/2010 - Superior,Well Above Average
Accelerated Reader Quiz #/Name: 136583 / Blockhead: The Life of Fibonacci
Reading Level: 3.7 / Interest Level: Lower Grade / Point Value: 0.5
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4.3 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 3
Love it, nice for tough chewers, split in half during play
Size: X-Large, Color: Textured Ring, Size: X-Large, Color: Textured Ring
LOVE THIS PRODUCT, would’ve gotten 5 stars but i threw it for my dog and it split in half on contact with the floor. It had lasted us well over 5 months, it’s not his favorite toy but he’ll pick it sometimes, i wouldn’t say it’s unsafe in half just don’t give the smaller parts!
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Reviewed in the United States on December 18, 2025
★★★★★ 5
Dogs love them
Size: X-Large, Color: Textured Ring
Great for aggressive chewers . hold up well
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Reviewed in the United States on April 26, 2026
★★★★★ 5
Great for power chewers
Size: Large, Color: Bundle
Nothing beats Nylabone!!! Our lab has destroyed everything else… even the extra durable black kongs. Finally a chew toy that is super durable and great size.
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Reviewed in the United States on June 12, 2026
★★★★★ 5
Large breed approved
Color: Blue
these incredible aggressive chew toys – they've seriously been a game-changer for my pups! I know it's a bit late, but better late than never, right?
I've got a couple of power chewers at home, a Rottweiler and a Labrador, and anyone with big dogs knows the struggle of finding toys that actually last. These bad boys have been in constant rotation for over a year now, and I'm genuinely impressed by their resilience. They're incredibly tough!
Funnily enough, we originally had three, but now we're down to just one. The others aren't broken, though – I'm pretty sure my dogs just loved them so much they've hidden them away in some secret stash, as they tend to do with their favorite treasures!
Beyond just being durable, these toys have been a massive help with their training. They’re fantastic for redirecting all that enthusiastic chewing away from my furniture and shoes, which, let's be honest, is a huge win for any pet parent!
Considering how long they've held up to some serious chomping, the price point is absolutely spot on. You definitely get great value for your money.watch your toe they are heavy.
If you've got a dog that's a champion chewer, you absolutely need to try these out. They're a lifesaver!
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Great all around
Color: Blue
We have 4 dogs, lab, pit bull, golden retriever, great dane, I bought 4 sets, they are constantly played and chewed on, and are still around everywhere, great to chew on and play with
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Reviewed in the United States on May 27, 2026