Let’s start with the first point:
1. The amount of copy on each slide
When it comes to making a good presentation, it’s very important to limit your copy on each slide. Nobody wants to read a long essay on every single slide — it is simply boring.
Try to limit the amount of copy you have on each slide. For example, instead of writing a whole paragraph, you could probably put it in a few short bullet points. Of course, that can be a bit hard when explaining a tough subject but try and use all your storytelling skills in order to do that. But if you can reduce the amount of copy in your presentation, it will have a big impact on its appeal and the attention of students, who will no longer need to read tons of text from the screen.