Cup up is a building set consisting of 49 cups and a base. The cups may be stacked up vertically or diagonally. They may be stacked with geometric designs and color configuration or build randomly. With cup up younger kids can learn colors, counting, addition and building. Cup up is a building set consisting of 49 cups and a base The cups may be stacked up vertically or diagonally They may be stacked with geometric designs and color configuration or build randomly With cup up younger kids can learn colors, counting, addition and building