START Subtraction 1-10 at Mac App Store analyse

START Subtraction 1-10 makes developing strong math skills fun. Play games, win stars, collect stickers and put them in your treasure chest! ••• FEATURES • Learn subtraction easily • Win stars • Collect stickers • Beautiful and fun graphics • Column and row formatted questions • Game history statistics • For kids and adults of any age ••• FUN & EFFICIENT You can easily check on the progress through the game history menu. See how many questions has gotten correct and how many wrong. The app will analyze the errors and wins and gradually increase the difficulty of the problems.