【實用教育app】Active Subtraction|最夯免費app-綠色工廠好玩App

"Active Subtraction" offers fun ways to learn and practice basic number subtractions. Parents can create different levels to suit different learning needs, or join in to play and have fun with their kids. In this version, we have included the following features: 1. Subtracting from one to twenty 3. Randomized formula to keep your children engaged 3. Highscores to keep track of progress and achievements