We are meeting with the students using MS Teams. So there is some interaction. What other people are doing is videotaping (an old fashioned term :-) ) their lectures and then working examples and answering questions on line. MS Teams allows you to record the session, so if someone can't make it, they can watch a rerun. I post a copy of my notes where students can see them too. The difficult part now is how to handle tests and homework.
Good idea with the two rollers!