The noted expert selects 70 of his favorite "short" puzzles, including such mind-bogglers as The Returning Explorer, The Mutilated Chessboard, Scrambled Box Top

Stump your friends and family with this fun, challenging math puzzle book! Who knew that math could be so cool? Crammed with games, puzzles, and trivia, The Eve

Are you sharp enough to solve these devious mind-bogglers? These diverting number, geometric, logic, analytical, and story problems--which vary in difficulty fr

Playing with mathematical riddles can be an intriguing and fun-filled pastime — as popular science writer Martin Gardner proves in this entertaining collectio

Brain-boosting math puzzles for kids ages 8-12 Learning math is a blast with this awesome collection of interactive activities! Whether it's a cunning cryptogra