This is a card matching activity for students to practice adding and subtracting integers. It is a set of 26 cards that are formatted to print directly on to 3 X 5 index cards. Each student receives one card and when the teacher says to begin, WITHOUT talking the students need to find the person who has a card with the same answer. I always time my students and then have them trade cards and play again. They love the competion of having to beat their old time.