Learning is a complex process.It is also depends on the individual who is learning. Everybody has a preferred ways of learning. Somebody learn by listening, some from reading and some by doing or applying. Which methods give a permanent or long lasting learning is also different based on individuals. But still you need multiple ways of teaching. One only method will not complete the whole learning process. We need to lecture then demonstrate the process and then let the students do by themselves.Ultimately active learning is needed because student will have to do the same thing in the jobs what they learn in the class.