From School Library Journal
Grade 4-6-- Through these titles, readers can learn how to trick their friends by using oddments of number theory or counterintuitive probabilities. Test Your Luck offers random thoughts about magic squares, probabilities, combinational analysis, and odds in a breezy, cartoony fashion, but it cannot match Jean Cushman's Do You Wanna Bet? (Clarion, 1991). While Wyler and Elting offer conundrums, Cushman builds a solid understanding of the subject. Pocket Calculator assumes advance knowledge of the use of a calculator, but not various calculation shortcuts. It focuses on magic show routines, mind-reading tricks, and using upside down calculator numbers as letters. Whenever the explanation for how a trick works gets difficult, readers are told to wait until they learn algebra. The math (not the showmanship) is given better treatment in standard texts. Wyler and Elting's books suffer from explanations that skim the surface too lightly, and from errors, most of which will be readily spotted by indignant students. The black-and-white line drawings are mostly for show; when they try to be useful, they are also error prone. But these problems may not matter to those in search of magic tricks. --Margaret Chatham, formerly at Smithtown Li brary, NY
Copyright 1992 Reed Business Information, Inc.