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

Packed with 100 fun puzzles and activities for kids ages 3-5. The colorfully illustrated pages feature bright and engaging themes designed to keep your child's

Bizarre imagination, originality, trickiness, and whimsy characterize puzzles of Sam Loyd, America's greatest puzzler. Present selection from fabulously rare Cy

Children age 7 and up can become mathematical marvels with this fun-packed activity book bursting with fill-in activities. The puzzles are clearly laid out, eas

Mathematical Games and Pastimes focuses on numerical solutions to mathematical games and pastimes. The book first discusses the binary system of notation and th