by Sarah C. Campbell Book list This book introduces the Fibonacci sequence, which begins 1, 1, 2, 3, 5, 8, 13. Each new number is determined by adding the two preceding it. The presentation uses color photos of flowers with different numbers of petals to illustrate the beginning of the sequence, follows up with photographs highlighting the different spirals seen on pinecones, sunflowers, and pineapples, and includes a picture showing the chambers in a cut-away nautilus shell. The design of the first series of illustrations graphically expresses the Fibonacci sequence by beginning with very small photos and gradually increasing their size in proportion to the numbers in sequence. The book's intended audience is unclear. The short, simple text on some early pages ( This is a flowering quince. Count the petals. ) will probably put off older readers, while young children may have difficulty even predicting the next number in the sequence, much less understanding the appended More about Fibonacci Numbers page. Though the Fibonacci sequence is seldom taught in elementary schools, teachers wanting to introduce it will find the basic ideas here, illustrated with attractive photos.--Phelan, Carolyn Copyright 2010 Booklist From Booklist, Copyright © American Library Association. Used with permission. School Library Journal Gr 3-6-This slim, attractive volume makes clear the appearance and significance of Fibonacci numbers in nature, both through simple, precise explanations and eye-catching photographs. With plenty of white space and crisp images, the design of the book is appealing. Details about Fibonacci himself, other interesting mathematical concepts such as the "golden ratio," and a glossary are included. With such an obscure topic, this book may have a difficult time finding an audience, but math teachers looking to add an interesting element to a lesson will find this a solid choice, and future mathematicians will be drawn into the magic and mystery of Fibonacci numbers.-Jody Kopple, Shady Hill School, Cambridge, MA (c) Copyright 2010. Library Journals LLC, a wholly owned subsidiary of Media Source, Inc. No redistribution permitted. (c) Copyright 2010. Library Journals LLC, a wholly owned subsidiary of Media Source, Inc. No redistribution permitted. Publishers Weekly This husband-and-wife team, who collaborated on Wolfsnail: A Backyard Predator, turn their attention to the Fibonacci sequence of numbers, employing photographs from nature, basic addition, and reader-directed text to explain it. Beginning with an image of a seed, Campbell moves through the first numbers, adding images of flowers with petals that match Fibonacci numbers (the flowers are set within boxes sized to correspond to the numbers as well). By the time readers reach a yellow cosmos, with eight petals, the flowers take up an entire page, laying visual groundwork for a later representation of the numbers as a spiral. The Campbells also explore more complex appearances of the sequence in nature and note that while Fibonacci popularized these numbers, they had already been known to Indian scholars. Besides being eye-catching, the photographs ought to prove invaluable for visual learners (spiral patterns in a pinecone are darkened for visibility). Kids should be left with a clear understanding of the pattern and curious about its remarkable prevalence in nature. Ages 5-11. (Mar.) (c) Copyright PWxyz, LLC. All rights reserved (c) Copyright PWxyz, LLC. All rights reserved |
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