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I doubt the author has watched many Khan videos; Sal consistently harps on understanding over procedure, while explaining both. I started at pre-algebra and have kept going - geometry, trig, calc I, II, III, linear algebra - racking up 60 hours of video watch time. Due to lack of practice problems, I probably wouldn't do well on a test; however, I have no problems conversing and theorizing about what I've learned. Due to Sal's method of explanation, I understand the concepts. My entire perspective of reality has changed, for everything, from relationships to spirituality to basic mechanics. Just a couple of weeks ago, my friend and I were discussing the basic nature of expectations in relationships, and I realized I could prove my points using calculus, and show her how relationships worked in terms of the fundamental theorem. The problem wasn't my understanding, but rather that she would not have understood the language. Indeed, it seems to me the author has a peeve about a common educational problem, and has ignorantly and unfairly grouped khan with the rest. The truth is, I would have never done this with any other available system. The overhead of every other method, both in cost and time, is too high. Long live Khan! |