Click "Roll" to generate a random addition, subtraction, or multiplication expression with an answer between 1-99. Once an answer is generated, that answer will not be generated a second time (for example, if 4x3 is generated, 2x6, 20-8, 5+7, or any other expression that is equal to 12, will not generate until the game is restarted) Click background to see the list of rolled answers to check students' winning cards. Hitting the spacebar will show the winning screen once someone yells "Bingo". Clicking the flag will reset the game and empty the list of answers
