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But slides have one big advantage: they can be posted online for later review so students can follow the lecture instead of taking notes.
I had a math instructor record his blackboard lectures and posted them online later that day. Just another consideration.
But I definitely can't imagine replacing either with PowerPoint, of all things.
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I find another benefit of blackboard presentation is the order of information. The lecturer can build something up rather than simply showing the finished article and saying voila.
But slides have one big advantage: they can be posted online for later review so students can follow the lecture instead of taking notes.
Reminds me of Walter Lewin's (of MIT) famous dotted lines: https://www.youtube.com/watch?v=l789l6np-qA
The affiliate link at the end points to a $139.99 version of the chalk box on Amazon, when an identical box next to that amazon listing shows at $17. The article came out in 2015, so seller or amazon or both are possibly scalping the demand while the article publisher seems to also profit.
Hands-down, the best presentation and note-taking math class I recall in college (discrete mathematics, a graph theory course, heavy on drawings) was run through a Wacom pen display on the lectern, linked to a projector. The professor could accurately and cleanly draw the required notation with his hand flat. Why erase when space is infinite, just scroll and/or zoom in the desired direction. A full color spectrum was…
http://pagine.dm.unipi.it/gobbino/Home_Page/ArchivioDidattic...
Earlier quoted context omitted.
I had a math instructor record his blackboard lectures and posted them online later that day. Just another consideration.
If the professor just recorded the lecture, I'd imagine most students would never go to class again.
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The act of taking notes is where at least half the value of notes are. Review latter is useful, but you can review the book. I cannot read my own writing, I still find I learn better when I take notes.
For the better, take notes afterwards while listening to a recording and looking at the blackboard snapshots. However, I understand that this cannot be a regular practice due to time constraints but maybe this could be used for the classes that spark most interest, the knowledge crystallizes better with a few passes
My Hagoromo chalk and eraser notes: https://www.math.columbia.edu/~bayer/LinearAlgebra/Video/Cha... CNN is doing a short web video on this chalk, and I was interviewed last week. They particularly liked my custom attache case for carrying all my colors to teach. When I drew diagrams revealing Catalan number correspondences, they were quite worried that these pictures "weren't math" and I might be hoodwinking them. Th…