Subtraction - Math 1st grade

★ ★ ★ ★ ★ Subtraction - Math 1st grade
* This is the useful application with lessons designed scientifically and suitable for 1st grade kids.
* Lessons are illustrated with lively sounds as well as images to enhance kids’ concentration.
* Lessons are classified according to topics and arranged from the easiest to hardest so it’s convenient for kids to study.
* Lessons are shown as a play so it raises kids’ inspiration more than worksheet.
* Lovely and simple interface helps kids to easily study by themselves.