I missed the announcement that #myFavFriday last week was supposed to be about review games, so I thought I would add my favorite today! It is very simple. All you do is choose the problems that you want students to work on, and cut up small sheets of paper (I do 1/4 page). Put a box in the center of the room with the desks in a circle around it. Give out the problem, students complete the problem, then crumple their papers up and throw them to the box. When everyone has finished, I check the box. Your answer must be correct and show all work in order for you to get a prize (candy). If it is incorrect, no candy for you! Very easy to do, and students love throwing things and crumpling paper.