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I tried an online edX course to better understand the experience. The video lectures and supplemental reading were very good. The online "computer" grading system was terrible and extremely frustrating. There were time when my solution worked locally (computer programming) but failed to pass the computer grader. There was no feedback. My son uses the online problem sets at his school and I find this a very poor excuse for "education." There is no feedback - answers are either right or wrong – there is no learning component. We learn by trying things out, and when we fail, it is important to understand why and what did we not understand. Computer based learning has a way to go (if ever) before fulfilling this aspect of interactive education. Don't take the "human" out of the loop. edX should strive to increase accessibility, but not at the expense of providing the rich learning feedback loop that I believe makes MIT shine!

Global Implications of EdX, Global implications of edX


EDx Problem Grading

I agree. Like you, I am "taking" 2.01x to understand the experience, even though I would be comfortable teaching the material. I find it extremely frustrating to waste time second guessing the grader when an obviously right answer is marked wrong -- then a day or so later seeing a discussion post from the staff saying "Oops we are fixing that"

The computer format offers the possibility of presenting a problem then offering increasing levels of "hints" in response to repeated incorrect answers, but this requires more programming.