PowerPoint. Yes, I agree that PowerPoint is a very valuable tool, but this only applies in certain situations. When a teacher writes paragraphs upon paragraphs on a single PowerPoint slide, and then proceeds to read them all verbatim to “teach” the class, I completely zone out.
And please, teachers, take special heed on the PowerPoints. This was the #1 disliked practice in our student survey:
Too much text on each slide; and reading directly from the slide.