Fill in a tic-tac-toe grid with any nine of the fractions below. As the squares below are called by letter, cross out the fractions in the grid that correspond to how much of the squares are shaded. For example, if C is called, cross out 1/3 (for one of three regions being shaded). If E is called, cross out 3/8 (for three of eight regions being shaded). The first to cross out three fractions in a row horizontally, vertically or, diagonally wins.