As soon as a lecture brought out slides, I knew my mark was going to be abysmal in that class. Thankfully I recognized that and in my later years promptly dropped those classes.
When I was at uni 2004-2008 There was a weird amalgamation of tech used in the lectures. Some lecturers used power point slides and some used an overheard projector with transparencies.
Most lecturers tended to post their content online (either as a .ppt or as a scanned pdf).
People realised that with all of the notes provided in advance there wasn't a huge incentive for them to be physically present for the lectures and the theatre would get progressively emptier throughout the semester. I admit I skipped more than a few lectures during course of my degree did not feel like I missed anything particularly relevant.
At my university the lectures were supplemented by "tutorials" - wikipedia tells me this is an Australian thing (https://en.wikipedia.org/wiki/Tutorial) essentially the lectures were 150+ people sitting in a theatre taught by a Professor and the tutorials were usually 10-20 people in a classroom overseen by a postgrad student. We'd spend the tutorial reviewing what was covered in the previous lecture and working through problem sets in a small group. It had the benefit that you would be able to get 1 on 1 attention from the tutor if you needed it. Most lecturers would not even field questions during their lectures whilst the tutors would allow you to email them question etc outside of classroom which was very helpful.
