Great Estimations
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Written and illustrated by Bruce Goldstone Hardback 32 pages; Dimensions 11.1 x 8.6 in. Publisher: Henry Holt and Company; (August 2006) ISBN: 978-0805074468 If someone hands you a bowl filled with jelly beans, would you be able to figure out how many beans there are? You could count them, one by one-or you could estimate. An estimate is a good guess. Do you see more that 5 jelly beans? Fewer than a million? Those are both estimates, but they are not very accurate. A great estimate is close to the real number. This book will show you how to train your eyes and your mind to make really great estimations. Jelly brans are just the beginning! Showing kids what big numbers really mean and how to use them well requires some mathematical subtlety. "Great Estimations" is a model of how to do it right…. With its cleanly arranged, stark-against-white photographs, "Great Estimations" is interactive in the old-fashioned way. It invites kids to do what they do best with picture books: stare at the pictures, enter them in their mind's eye, and get something done while they're in there. --New Yrok Times Book Review, Editor's Choice A must-have resource for school libraries. --Kirkus Reviews Goldstone adds another winner to the growing canon of titles that make learning math concepts both fun and interesting. Combining clear, concise language with colorful photos of countable objects, he introduces estimation, beginning with eye-training exercises to recognize groupings of 10s, 100s, and 1000s. Readers are encouraged to move the book around so they can see the items from varying perspectives. The next few spreads explain how to base an estimate on quantified groups: left-hand pages show clusters of an object (10 cherries, 100 cherries) while right-hand pages present an unidentified amount of the same thing (About how many cherries are in a quart?). The author then shows youngsters how to make reasonable estimates when looking at large quantities using clump counting and box counting. The real standout here is the crisp photography of objects and animals, including everything from google eyes to a penguin colony, set against stark white backgrounds that make them almost seem to leap off the page. This well-designed book will add zing to many a math lesson and attract browsers as well. --School Library Journal CLASSROOM ACTIVITY Grid Techniques Following the box and count technique described on pages 26 and 27 of this book, challenge students to search books and magazines to find pictures for estimation. They use a straight edge to draw a grid on the picture and estimate the total. *REPRINTED FROM: Kingore, B. (2009). Bertie's Book Notes 2009. Austin, TX: Professional Associates Publishing.   ABOUT THE AUTHOR AND ILLUSTRATOR: Bruce Goldstone has wanted to be a writer since he was a child growing up in Ohio but always dabled in art and design as well. He currently writes text books but also does graphic design for a New York theater company. He estimates that he has written more than 12,000 textbook pages, more than 30,000 word problems, and more that 2,000,000 words. He lives in New York City.