Use this fun game at school or at home. The player that goes first places yellow chips on any two numbers surrounding the grid. He or she then places a red marker on the product (answer) on the grid. The second player moves only ONE of the yellow chips and then places a blue marker on the product of the new problem. Players continue until one of them has four numbers covered in a row. Players can strategize to block their opponents from getting four-in-a-row. Includes 5 game mats and 175 chips. 2-10 players.