My wife teaches university students and she really enjoys using Powerpoint presentations in class³. Most lectures by visiting scholars, as well as research, is usually presented with some kind of presentation. In the math world, it’s usually some Linux-based derivative.
I’ve been going to a class where the professor solely relies on using Powerpoint presentations. I have come to hate them. The reason is that the professor doesn’t understand how much time it takes for students to note down what they see on the slides. Sure, the presentation is made available later on the web, but I like taking notes. That’s how my learning process works. I know that most students work in similar fashion.
The professor shows a theorem, barely explaining it and the rushes through a demonstration. I haven’t even finished noting down the theorem when he’s already midway through the demo. It’s very annoying. The other extremely annoying fact is that the demos, or parts of them, vanish because animation is used in the Powerpoint. Extremely frustrating⁵.