【實用解謎app】Marvins Maths Free|最夯免費app-綠色工廠好玩App

An educational application to help start out with simple addition, subtraction and multiplication. Change setting to hard for older children to help improve their mental maths skills. Marvin keeps score on the main page, watch his face change depending on how well your kids are doing. This is a free version, adverts are included.