Flipped classroom teachers almost universally agree that it’s not the instructional videos on their own, but how they are integrated into an overall approach, that makes the difference. In his classes, Bergmann says, students can’t just “watch the video and be done with it.” He checks their notes and requires each student to come to class with a question
Except in formal education, we don't really think of attending a lecture as the best way of retaining knowledge
There's been a lot of talk about the "flipped classroom," where students watch a video of a lecture, read the material, and then come in and, instead of a lecture, there's a Socratic form of the dialogic question and answer session. Law schools have operated that way for decades.
A good way to stimulate discussion. Instead of a taped lecture, maybe the 'flipped' component could also be a reading, or a short verbal intro to the reading by the teacher. I like the idea of an index card to help the student see the question more tangibly. It's also much easier to collect the index cards as formative assessment than to collect a whole notebook!