Draw the following 6 x 7 grid on the board. It's a colorful world. Simply the best. Divide the class into three groups. This game takes 50 - 60 minutes to play with lower levels.
Upper levels take less time.
The first person from each team has the bell, and they get to ring in and answer the question if they know the answer. Only the students who have the bell may give an answer. When a team rings in, they must answer the question immediately . When a team rings in and gives the correct answer, they win those points.