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How I changed teaching after AI managed to do all my homework assignments

305 points · 288 comments · azhenley

  1. a57721 · · focus · HN ↗
    I am teaching some math courses, and I see how LLMs disrupted all standard approaches, and I don't know what to do.

    I rely on written exams that are open book, but forbid any use of computers and smartphones in class.

    The university insists that homework can't be optional, but it lost its meaning. I've tried to explain to my students that it's in their interest to think about home assignments on their own, but the majority will obviously use gen AI, and it's such a waste of time to check and grade LLM output.

    I just had an experience where all students were given "sample problems" to try at home and prepare for the written test. Many of them just dumped the document into an LLM, asked it to produce some "exam guide", and showed up with that thing printed out, asking me during the test to explain what LLM output meant.

    It seems like the university also has many people pushing for AI use for everything, but I teach basic stuff where the goal is to make students think on their own and digest some fundamental ideas, LLMs can produce perfect solutions, but relying on them is pointless.

    1. BeetleB · · focus · HN ↗
      > The university insists that homework can't be optional, but it lost its meaning.

      The problem is not LLMs, but your university. In my undergrad, almost all the math courses had no required HW. They'd assign it, but you wouldn't turn it in. You'd come to office hours for help on the HW, or ask in class (they'd often dedicate the first 10-15 minutes of each lecture to Q&A).

      It was awesome for people like me. No time wasted on neatly presented HWs. I'd do it quickly, verify the answers, and study for the exams.

      The flip side was there were many exams (you don't want your grade catered if you do poorly in one exam). A course like calculus could have 4-5 "midterms", and then the final. Often, they'd drop your lowest midterm score so you're allowed one bad day.

      1. submain · · focus · HN ↗
        In my country of origin (not US) that's how it worked starting in high school. Homework was called "suggested problems". The teacher reviewed them in class. No grading. We ended up doing it because that was almost the only way to pass the exams (which, btw, could be up to 50 questions long...)
      2. trostaft · · focus · HN ↗
        Indeed, I've switched over to model similar to this in the course I teach. Weekly optional problem set + in-class quiz every week with one homework problem verbatim + an extension. The homeworks are completely open resource, LLM, friend, sorcery, w/e. I figure that, even if they're given an oracle, they have to internalize the ideas to the point where they can generalize on the follow-up. I'll only really know when the course finishes, but I think this will work out. I want to pair this with an oral midterm and final, but that'll have to wait a semester.
      3. seanmcdirmid · · focus · HN ↗
        I heard from a friend who went to German university that the homework was never graded, maybe you could get help with it but the professor didn’t have TAs and had a large class. Lots of Midterms were also not feasible given the setup, so often 100% of your grade depended on the final.

        I can’t imagine as American how that would go down with most American students.

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