This Tic-Tac-Toe game has basic factoring [ 12 + 6 --> 6(2+1) OR 15x + 12 --> 3(5x+4) NO NEGATIVES]. This can be used as an assessment, extra practice, or small math center activity. This is a self checking game. While one student is completing a problem, the other student holds the answer key and checks the answer. If correct, the student can put an "X" or "O" and then the pair swaps papers.