Ability of comprehend

I teach cello to a man who have a left handicap. He likes the sound of cellos and is highly motivated, but often cannot move his right and left hands at the same time. At that time, it is important to try again using another word or action like a breaking down the elements you want to convey. Also the textbook for children is simple to understand and repeats the same to encourage the next. When there are too many issues, focus on one purpose.Then focus on his ears. If there is a sound he wants to hear, his body will follow. If he can do that, say "Great!" By making students realize their sense of accomplishment, teachers can feel the same.