Teachers talking over slides (or images or diagrams or animations) has become an important teaching strategy during the pandemic. It is likely to continue to be a staple of teachers not just because it will make the pivot to remote teaching easier when it becomes necessary, but because it allows for alternative method of teaching that we have found can be effective.
After a conversation with some colleagues, I sat down to write a rubric for those instructional videos. I put a Creative Commons license on it, so please make whatever use of it you can.