`Math Game Using A Tic-Tac-Toe BoardGertrude Franklin              William Penn                               1616 S. Avers                                Chicago, Illinois 60623                               312-535-3665      Objectives:To introduce three mathematical operations -- addition, subtraction and multiplication -- by using Tic-Tac-Toe methodologyTo introduce a new method in using the Tic-Tac-Toe grid.To present a new method in problem solving.                                        Materials Needed:Pencils                        Pieces of paper for computationOverhead projector             Handouts of sample math problemsRecommended Strategy:The teacher will write some math problems on the board to be explained to thestudents.Students will complete problems in computation on the Tic-Tac-Toe board or on paper.  The student giving the first correct answer will get a point.  The points will be totaled at the end of the game.    Place nine students in a square resembling a Tic-Tac-Toe board.Scores will be kept on a Tic-Tac-Toe board by an "O" or an "X."  The team scores by making a straight line of 3 O's or 3 X's. The O's will compete against the X's.If the answer is incorrect, the problem will go to the next team for a correct answer. Players will rotate until all have had a chance to participate.  Blank Tic-Tac-Toe symbols are given to students to create new problems.The overhead projector will be used to introduce problems in finding the missing numbers.  For example, a blank square in the Tic-Tac-Toe grid would require the answer 15 to the problem "How much is 3 times 5?"  These problems will be shown one at a time to give students a chance to get the right answer or to ask questions about solving the problem. Conclusion:        Students were introduced to Tic-Tac-Toe problems in addition, subtraction and multiplication and in finding the missing number. Reference:Family Math by Leon Kerr Sternmark, Virginia Thompson, and Ruth.`