Includes 50 math mysteries! Players read about a crime committed, and each player receives a suspect's alibi. Players must determine whether the math in their suspect's alibi is correct or not. If the math is correct, the suspect is innocent. If the math is incorrect, the suspect is guilty. Players are required to use multiple grade-level math skills to solve the crimes. Set of 200, 4" x 2.5" cards & directions. For 2-4 players.