Rather spontaneously, I decided to have my students on TodaysMeet again as we started a video about the Eucharist. I like it even more for movies than for presentations, because Ron Rolheiser isn't actually there to be distracted by students typing their thoughts as he speaks.
Thoughts (and some non-thoughts) range from silliness ("oh whadup") to comments and questions that show attentiveness to the words of the speaker and a curiosity about his meaning. I was able to answer a couple of questions on the spot, and a couple more I will take up before we continue the video at the next class.
I don't mean for this to replace our face-to-face, vocal discussion, but I hope rather that it will help to facilitate it. Time will tell as I continue to experiment.