I've found (and I'm sure you can relate to this) that with the online instruction mode the mix of student demographics creates a problem when presenting materials and discussion. My "solution" is to break the online "chat" demonstration/lecture into "chunks" (segments), where I will cater to each age group so that it keeps them from becoming easily bored. I also host a weekly "workshop" where students can attend if they have any specific issues that need handling, and in each case I can then gear the discussion to the appropriate level. This seems to work well, although certainly not perfect,… >>>