Learn addition and subtraction in a flash. This Addition & Subtraction Flash Action Mac app makes learning basic math fast and easy. It’s flash cards with a techno twist! Children can practice problems against the clock, challenge another player to a game of fast facts, or test themselves for speed and accuracy. They can set the program to practice addition, subtraction, or mixed problems, and the level of difficulty will be adjusted based on their performance. If there is a fact a child just can't get, he or she can go to the handy, interactive chart to find the answer.

U.S. English language & math conventions