Diagrams and tables are considered as the easiest of teaching methods to convey the textual subjects to the mind of students. They do not need for a great deal of explaining and giving details. As far as I found the students always tend to reduce the amount of the study; I tried, skillfully, to do what they want without making any defect in the subject of study, so I found no way to achieve that by tables and diagrams. Because the personalities of the learners are variable; some of them depend on visual act, others resort to repetition of writing, and others rely on listening, therefore, and when we use the method of diagrams and tables, we can involve vision sense in teaching in addition to hearing during listening to the lecture. Undoubtedly this method teaches the student how to summarize the subject and concentrate on its basic pivots in addition to contributing to watch the differences between these pivots through examining the diagrams and tables.