Reminds me of a couple of college friends doing their first EE lab.
They did a number on some meter, and the repair guy shows up, and said to the lab assistant: "Huh. Never saw THAT before. Usually only the needle gets bent. This is all but fried."
Your meters had needles? Yes mine did too, but my students were in the age of read out meters, and fortunately most had some self protection. Except for the ammeters, sigh.
Yes, I taught several EE labs and we had only half the meters working by the end of the quarter. And how many times did we learn that LEDs have polarity? Its really too bad I aged so fast but I ran out of lung power, and now this virus— People my age are wondering how we will get out of this one. But I did manage to leave teaching when they still wanted me. Better than the other way around.