Players form equations on the board and strive for high scores by combining points on each tile with bonuses from premium board positions. The Equation Thinking Game™ is for 2 to 4 players age 8 and up. This award winning game is not only exciting and engaging on several levels of play, but it improves thinking skills and develops number sense and algebraic reasoning. Age 8 and up D505$26.95 Junior Tile Set176 tiles including whole numbers with more 0s and 1s than the Original Tile Set, fractions with denominator 2, the four basic operations with more + and - than x and ÷ and equal symbols. D505-A$7.95 Advanced Tile Set197 tiles including integers, exponents, fractions, the four basic operations, and equal symbols. D505-B$7.95 Credit Cards Accepted: Discover Card, MasterCard, Visa. Lawrence Hall of Science Members receive a 10% discount on all purchases. Your purchases help to support the educational mission of the Lawrence Hall of Science. © 2006 Regents of the University of California