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Same for schools. We only had one teacher use the shiny new digital projector regularly and his lessons were a complete waste of time. Now it's the default less

Same for schools. We only had one teacher use the shiny new digital projector regularly and his lessons were a complete waste of time. Now it's the default lesson format, it seems. Good for teachers, as you can just recycle the same slides forever, good for admins as you can see the teacher's lessons via email, good for schools because it looks high tech, so it must be good, but on average, crap for learning. Not least, everyone is watching the screen, not the teacher. Even acetate-based overhead projectors and premade transparencies are better than just clicking though slides. If you worry about facing the class while teaching, and OHPs the modern solution is ones that have a camera facing down and you draw on paper are quite neat and a lot less bulky. I'm not talking about the occasional video or animation or detailed drawing, obviously there are good things you can put up on a high-res digital screen. But most slideshows are just "click, narrate, click, narrate".

bediger4000 1y ago
> you can just recycle the same slides forever, This has been true since overhead projectors were invented.
- grues-dinner 1y ago
  True, but OHP lessons are somehow still a lot more interactive than clicking through bullet points one at a time (not that all PowerPoint lessons are like that, but lots are). Maybe it's simply the physical act of changing the sheet, but my memory of the lessons was that they played a much smaller part in the lesson than a PowerPoint usually does in a PowerPoint lesson (and later lecture).
  - bediger4000 1y ago
    My sister, 5 years younger than me, got high school geometry with a set of overheads that were used by a different, older, teacher when I was a sophomore. My memory of those lessons was that Mrs White only did things on the overhead slides, with wax pencils. A PowerPoint would have been lively compared to euclidean geometry on overhead slides.

bediger4000 1y ago

> you can just recycle the same slides forever, This has been true since overhead projectors were invented.

grues-dinner 1y ago
True, but OHP lessons are somehow still a lot more interactive than clicking through bullet points one at a time (not that all PowerPoint lessons are like that, but lots are). Maybe it's simply the physical act of changing the sheet, but my memory of the lessons was that they played a much smaller part in the lesson than a PowerPoint usually does in a PowerPoint lesson (and later lecture).
- bediger4000 1y ago
  My sister, 5 years younger than me, got high school geometry with a set of overheads that were used by a different, older, teacher when I was a sophomore. My memory of those lessons was that Mrs White only did things on the overhead slides, with wax pencils. A PowerPoint would have been lively compared to euclidean geometry on overhead slides.