Yes,he has a good reason to teach them on this way,because they are students,and their minds are not flexible to learn all the things in one hour.He is very good teacher and his strategy to learn the students too..He wants to gave them a step by step the knoledge,it is very quality strategy. This what our teachers teach us is not enought.They want from us to take our knowedge sometimes single-handed.I think that is all I  don`t know anytingt else