I'm not sure that this is such a good idea. I had the option to do it this semester, but I wonder what the students are actually missing through only hearing oral recordings? They don't get to see me stumble and blush, nor do they get to see my wonderful powerpoint presentations. And I wonder does 'on their own time' really mean 'not at all'?
A lecturer at a West Yorkshire university has abolished traditional lectures in favour of podcasts.
Dr Bill Ashraf, a senior lecturer in microbiology at Bradford University, says the move will free up time for more small group teaching. He told The Times Higher Education Supplement that first year biochemistry students would watch or listen to virtual lectures in their own time. Students will access the podcasts via their MP3 player, phone or computer.
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[...] He told BBC News “Some lecture classes have 250 students, so I question the effectiveness of a didactic lecture for an hour.” [...]