Over a period of 25 years as author of the Mathematical Games column for Scientific American , Martin Gardner devoted a column every six months or so to short math problems or puzzles. He was... This description may be from another edition of this product.
You may already know that January is National Puzzle Month, and January 29, National Puzzle Day. Of course, we don't need a designated day (or month) to enjoy some good puzzles and intriguing mental challenges. Keep your mind busy and your wits sharp all year round with these fun puzzle books.