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Another term of allowing students to ask me questions anonymously during class. >800 Q in 66 Chem101 lectures, and always a different flavour to the ones I get via traditional hand-raising (the ones below aren't at all representative, just some fun examples)
@UncleCid ha, yes! some stream of consciousness stuff in there
@mcindoe Woah, this just sounds like what our brain does when we try to go to sleep. Especially the white board marker one.