Unlike traditional bingo, numbers are not called. The 24 problems are cut and pasted onto index cards. Students should select a card, record the problem number and solve the problem. All answers should be found on the bingo card. Once a student has five in a row, they have BINGO. I kept a key and checked their work that they recorded, but it is a self checking activity since all answers are on the board. Another version, have students make their own bingo board, recording the 24 answers in their own chosen spaces.