The first student who holds up a correct card gets rid of the card by giving it to the teacher. If the first student's answer is incorrect, the student receives an extra card as a penalty. The first student to get rid of all cards is the winner. Play can continue until several students have won. In this system, when an answer has been given, the answer card and the description card are both discarded.
Variations Make the game last longer by adding more cards.
Duplicate answer cards work fine. Arrange students in teams of three or four. This works especially well if students have a wide range of abilities. Let the student who gets rid of all cards first take the teacher's place as the caller. When another student wins, the caller can become a judge and help determine who raises a hand first and whether the answer is correct.