Sink the Ship is a game of "Multiplying & Dividing Fractions for Fun!" From Publisher Website: Multiply or divide two fractions created from the roll of four dice to produce an answer that will help you build runs of your marbles for bonus points or block your opponents' runs. Include a safe port in a run and double your points. Sink the Ship of your opponent in its home port and score even more points. Lots of strategy in this fun game of multiplying and dividing fractions! There is a wooden board version, and a Masonite wipe-off board version that can be used with crayons or water-based overhead markers. Wooden Version Includes: - 12" x 12" x 3/4" Birch Game Board - 80 Glass Marbles (4 colors). - 4 Marble Trays - Dice - Directions - Game Box Masonite Version Includes: - 11" x 11" x 1/8" Masonite Board - Dice - Directions