This is a great activity to use in a math center or as a whole group. Print out the tic tac toe board and put it in a transparency so students can use dry erase markers to mark their X's and O's. Each pair should have a pair of dice and with each roll they will use the numbers to determine which box to try. For example, if a student rolls a 2 and a 3 they can either move to the square 2,3 or 3,2. Students should work out problems on a mini white board or scrap paper and each student should do it, regardless of whose turn it is, so the partner can check the other partner's work.