You can forget facts but cannot forget understanding

David Gurteen:

This short video clip Confessions of a Converted Lecturer from a talk by Professor Erik Mazur who teaches Physics at Harvard is quite mind blowing.
Professor Mazur discovered that his students can “learn” something conceptually and re-iterate it and pass exams but still fail to understand the subject or acquire the ability to apply that learning in real world situations. No amount of “lecturing”, how ever good, solves this problem.