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

66 pointsby 1d agothelastsoftwareengineer.substack.com
33 comments
3h agoHN ↗

Just grade the process, not the result. It's literally that simple.

AI can talk the talk, but it can't walk the walk.

A simple "explain why this is the best solution" will make it shit the bed 10 out 10 times.

1h agoHN ↗

Thanks for sharing. Interesting to see how teachers are adapting to LLMs. I agree that trying to ban AI use is futile.

1h agoHN ↗

I have a fairly long experience of both teaching and grading, even though I stopped a couple of years ago. After a couple of years of trial-and-error, I think I found the "right" way:

* Alternate between theory and practice in the course of a single 2-hours slot. Theory is necessary, but the attention span of people is very limited. * Grade either a homework assignment in the form of a real project with specifications. You give the assignment half-semester, so that students who start early can ask questions. Otherwise, grade a in-session exam, with every resource available, including the course and the whole Internet. However, you don't assess the knowledge, but if the student is able to apply their knowledge to the different tasks at hand.

These approaches are now completely moot in the age of AI.

I was surprised the first time a colleague asked me to do an oral exam. I thought it was a burden on people with poor social interaction skills. It went surprisingly well: you could see in a couple of minutes if the student had integrated the concepts of the course, even if they were shy. Now I wonder if it's the way to go. There's one caveat, though: it doesn't scale.

1h agoHN ↗

I was thinking that one of the great ironies of artificial intelligence is that it will make good teaching even more labour intensive. Those kids that can afford the one to one tuition required to push past our natural inclination to be lazy will learn things, while everyone else will succumb to outsourcing all their thinking.

There’s no way I’d have learnt everything I know now about software in today’s environment. So much of software development - debugging techniques, architectural decisions, structuring data etc is learned through trial and error. As the models get better is becoming easier and easier to just not look too closely at their output. I suspect it’s human nature.

1h agoHN ↗

Oral exams don't scale at the beginning with hundreds of students per course, agreed. So make them in-person written exams, German universities managed that just fine a few decades ago. Oral exams were reserved to advance from Grundstudium (basic) to Hauptstudium (main).

In my very limited experience (I have German major degrees in Informatik and Philosophy, I was a TA for Logic in Philosophy) the more advanced the topic the thinner the attendance anyway.

1h agoHN ↗

The country of Argentina, despite its crippling debt, is able to provide free university education where the majority of classes for most majors are graded with an oral exam.

They've shown that it is entirely possible to scale a system like that, as long as the society sincerely values the role of an educator.

1h agoHN ↗

Maybe the Germans were right? One in-person test, preferably an interview, at the end of the semester should be enough to motivate the smarter part of the bunch to make sure they understand the issues at hand. The rest is chaff anyway. Don't optimize for chaff.

32m agoHN ↗

I had that a variation of that experience. This was mostly in the pre-AI days. Homework assignments were mandatory but only counted towards exam admission not the final grade. Much better for motivation.

2m agoHN ↗

When I was a student, nobody cared if you did your home work. The teacher would go through the home work in the next class, and if you didn't do it, you would just lose the opportunity.

Then there was the written exam at the end of each course, which constituted 100% of the grade. The only reason that got abolished was because it made too many students fail, and the board hates that. So that became a race to the bottom, and apparently, we can still go lower.

It's reaching levels where most uni diplomas don't matter any longer. The only thing that will then matter is your network. That's the end of social mobility.

1h agoHN ↗

This makes me think of exams — I always did well on open-book exams, but I didn't do well on exams where I couldn't look at the book. Whether it's because of ADHD or just a lack of memorization ability.

Similarly, I did well in interviews where I could use the internet, but I didn't do well in interviews where I couldn't use the internet.

Everyone has a testing format they're good at. I'm curious about how this kind of thing is evaluated, and whether there are any papers related to this.

1h agoHN ↗

I now shifted to in-person interactions with a TA. After every assignment, each student needs to schedule a 15-minute meeting with a TA to answer a couple of questions in a live conversation

Isn't the answer the 'flipped classroom' - students are assigned reading/studying to do before a class and the class becomes more interactive, answering questions/discussing topics/solving problems etc depending on subject. Of course, this is more expensive than a hall with 400 people listening to a lecture with a couple of tests/essays.

https://fltmag.com/the-flipped-classroom/

https://en.wikipedia.org/wiki/Flipped_classroom

1h agoHN ↗

This only works if you either have very intrinsically motivated students or you verify that really everyone has actually read the assigned materials before class. Otherwise, some people will turn up unprepared, you will have to explain stuff they should have gotten from the reading assignment, other students will be annoyed, students will stop preparing for class, vicious cycle.

37m agoHN ↗

And then you fail them. I suspect an institute genuinely empowered to do so, where the expectations were declared up front and followed through on consistently, would fare well, after the dust settled.

31m agoHN ↗

As far as I can tell (based on university and high school level instruction forums) institutions increasingly are not backing the teachers that want to let kids that have earned that F fail the students.

I've heard of places where the minimum points for an assignment is 50% even if you never turn it in which is insanity.

1h agoHN ↗

We still have developers because we can't outsource responsibility to AI. If shit breaks, we still need someone to fix it. Maybe you think that can also be automated. I have a counter-example. AI will rarely use the existing state when solving a bug. It will tack on it's own event queue, it will make up it's own messaging system, it is a cancerous growth. And this observation is based on both opus5.5 and gpt5.6-astra. The results are way past magical at this point, but you still have to weigh in pretty heavily for orderly code growth where solutions are succint, focused and preserve the existing structure. They are still noobs at fixing/adding stuff.

1h agoHN ↗

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.

1h agoHN ↗

I've tried to explain to my students that it's in their interest

Perhaps some people do not belong at university? It is just a waste of everyone time, to insist 50% of population studies until 25 years old.

28m agoHN ↗

It's like we're putting everybody on crack and then say they're too weak if they become addicted.

57m agoHN ↗

There is indeed no point in grading home assignments anymore, but why not randomly ask a student at the start of each class to present their solution on the board?

And do a final exam on oen and paper and nothing else, and an exam that relies more on thinking than rote memorization of formulas (or print the relevant parts of the course on the exam document itself).

29m agoHN ↗

there probably is no time for 100 students to each do that in a university mathematics lecture, but there are probably ways to make sure students are still learning by restructuring the university into mandatory recitation and labs or something

48m agoHN ↗

I'm taking a year-long sabbatical to study a language at university right now and they're changing their assignment processes to curtail AI use. We have two versions of written assignments - the first to be written by hand in class with just a Swedish-Swedish word book available, and the second version to be typed at home implementing the professor's corrections from v1.

At least in this course students seem to be taking their strict 'no AI' policy quite seriously. Then again this is also the kind of course you do when you want to actually learn the material. It provides a qualification for further higher education in Swedish, so if we don't legitimately learn the stuff there's just no point as we won't manage in future courses.

30m agoHN ↗

Just don't make it open note then? Or you provide the only notes or cheat sheet available to them at the start of each test. That's what some math tests I've had had done before and I believe the SAT also does the same thing with formulas in the back of the test to reference.

10m agoHN ↗

I've always wanted to find out if this would work:

If I knew most of my students were using LLMs I would encourage the rest of them to use them too. I would then change the marking criteria such that if they get a single point wrong that's 20% off the entire grade. 5 mistakes gets you a big fat zero.

LLMs are great but they make mistakes. At this point your students would have had to spend so long checking, re-checking and triple checking the LLM's output that they will have accidentally learn what they need to. They will likely need to cross-reference multiple LLMs and at least have read their output which is likely an upgrade on today.

Or some variation of the above, I'd be interested to hear your thoughts.

55m agoHN ↗

Thinking too small. The interactive testing needs to be done by AI. Then the transcript is reviewed by the teacher.

52m agoHN ↗

It's funny how people talk about "teaching" getting more difficult with LLMs.

Clearly teaching got a lot better, since we now have a new teaching tool at our use, the LLMs. It's evaluating that got harder, because students can use the same tool to cheat in traditional forms of evaluation.

If "teaching the students" means the same as "evaluating the students" to you, maybe you shouldn't teach in the first place.

46m agoHN ↗

It’s not just evaluating. Students used to learn skills while doing an assignment. LLMing through assignments teaches copy-paste at best.

It’s like copy-paste Wikipedia presentations 2 decades ago. People used to learn things doing research for a project. Then suddenly it became copying off Wikipedia and people not even pre-reading what they copied into PPT.

43m agoHN ↗

What you’re calling evaluating is a part of the learning process for the student, not just about confirming that the student knows the thing. LLMs are actively undermining learning in this way. There was useful friction which has been removed.

36m agoHN ↗

Teaching and evaluation are of course not the same thing, but evaluation is an important part of teaching. There is a mismatch between students’ overall desire to learn things and the moment-to-moment experience that learning is hard.

Even devoid of all the economic and social pressures that grades impose students would compromise their learning experience. Ever regretted looking up the solution to a puzzle in a video game or sneaked a peak at the crossword puzzle solutions?

One of the hardest part of teaching is keeping students from self-sabotage. Evaluation helps with that.

Beyond that evaluation is of course also useful just as feedback.

28m agoHN ↗

Teaching is imo mostly about techniques that battle laziness. Teaching intrinsically motivated intelligent students has always been trivial. All progress in education is about scaling it to work for people who only reluctantly engage with the material.

1m agoHN ↗

Without grading, students don't learn. It's as simple as that.

39m agoHN ↗

Seems the core problem is that many/most students aren't there to learn the material, just to get grades. The class is a complex mechanism to force them to learn material against their will in a validation arms race. The teacher's job becomes something like a military commander. Seems depressing.

19m agoHN ↗

20 years ago my department head was saying homework was pretty pointless because everyone was copying each other. They assigned a token percentage for homework so at least the students were submitting homework.

8m agoHN ↗

The most interesting part here is that AI isn't replacing the learning goals, it's replacing the evidence instructors used to measure them