Students in Mrs. Gustafson's seventh-grade math class used what they learned about probability to design games of chance and have a carnival on Dec. 20. The students were assigned a certain probability. They designed a game using dice, cards or spinners. The students made posters explaining the rules of the game, how to win and the theoretical probability of winning the game. Sixth-grade math classes, as well as faculty and staff, were invited to come during the day to play the games and win prizes. The seventh-grade math students recorded data for the number of winners and compared the results (experimental probability) to the theoretical probability.