When any of the lessons already.Students have to practice the exercises within lessons.If students do not understand. The teacher must explain it correctly.It is necessary to have the time to learn each subject 2 hours per lesson.
When learning any lessons, then Students do exercises to practice the lessons. If students do not understand Teachers need to be explained It has to be a time of two hours one lesson.
When any lessons.The students have to do the exercises in class.If students do not understand, teachers have to get this right.Therefore, it is necessary to have time to study each subject 2 hours per 1 periods.