I saw this math during one of my observations and the kids had a great time. It's a variation of one of the games aleady posted. Two students go to the board and the first one to finish a math fact (add,subt.,div,mult) gets to stay up at the board until he is beaten. The first time he beats someone he is a royal, the second time he becomes a prince/princess, the third time he becomes the king and the class has to stand and bow to him. The game continues then.