."..enough variety to interest almost everyone....a nice assortment of new puzzles....entertaining...brain-stretching...Adults, as well as middle school students, will enjoy...the eighty-three puzzles...The author's advice to the reader to 'hang on to your brains' is well founded....contains an array of puzzles that require the use of a variety of higher-level-thinking skills....the author has added a new twist or two to make them even more challenging. The book...fosters critical thinking....clearly written...valuable for the classroom teacher...excellent for students who like to be challenged or who wish to improve their critical-thinking skills....one of the necessary items that I would choose for my classroom."-- "The Mathematics Teacher. 96 pages, 100 b/w illus., 5 3/8 x 8 1/4.