In one day should not exceed 5 hours ago Because if the study lot are innocent and child after 5 hours it will not concentrate to study, learn, understand anyway took time to review the lessons to learn lot better.
In one study should not exceed five hours. If students do not know about, and after five hours, the child will not concentrate on learning to learn, I did not get to take the time to learn a lot of lessons to be better.
In one day, should not over 5 hours. Because if the students a lot of innocent children and after 5 hour will concentrate to study achievement come out, do not understand when learning a lot to review the lessons better.