The sequel to the orignial puzzle book of Number Jigsaw Puzzles, Balance Quest puzzles are designed for players who enjoy recreational math. All originally designed, they have proven useful as mind sharpeners and even by elementary school students learning addition and subtraction. Balance Quest puzzles will appeal to your busy demands with very simple puzzles, moderate levels, or may provide hours of entertainment for players seeking a real challenge. They are designed for ages 10+ For further information, please visit the website at www.balancequestpuzzle.com.