I’m confused right now, so be prepared that this post is going to be half-informative and half-venting. I’ve recently come across a Youtube-sensation, for lack of a better word, and I’m not sure what to make of it. I’m talking about Salman Khan whose free learning website, Khanacademy.org, hosts more than 3000 lesson videos and his Youtube channel attracts millions of students and teachers alike. Apparently, it all started in 2004 when he just wanted to help his cousin with some private tutoring lessons in math. Fast forward ten years later, and Salman Khan is known across the world as the “global teacher”. Pretty impressive, yes, but what I find even more confusing is that he manages to attract such widespread attention with a teacher-centered, lecture style approach to teaching that many of us teaching have found to be an antiquated and, flat out obsolete method. Why? Well, the most common argument is that frontal teaching limits students in developing their own critical thinking skills. Rather than having students engage with content actively, they passively consume the lecture.

So, I’m wondering why Khan’s approach has been working so well. Usually his videos last between 8-15 minutes, are produced in a relatively simple fashion, i.e. he uses a screen capturing software where he solves math problems for instance, and his voice narrates the whole process. So, you only hear him but you never see him. Instead, you see a black canvas on which he scribbles the equations and explains the whole process. Aside from math, physics, chemistry, and economics, he also teaches history and biology (the last two not being his particular area of expertise), even admitting that he gets most of his information for those topics from Wikipedia entries.

I find that whole thing fascinating and scary at the same time. I wholeheartedly reject the teacher-centered approach to pedagogy, always trying to empower my students so that they can develop their critical thinking skills. And then I see Khan and his success with an antiquated teaching method, and it seems to work. Khan has been receiving wide-spread media attention now for years, and many students have said that before they take high school level or college-level tests, they would watch a couple of Khan’s videos to prepare rather than going over their class-notes (check this link).

What do you think / how do you feel about this? I’m really interested to read your comments, and have a lively discussion about the potential merits of such an approach to teaching.

Cheers,

Thomas