Re: Online classes
It is difficult to explain what you are actually asking the instructor in virtual rooms. In a classroom, you can draw on the board or repeatedly ask the same question to get it answered. You can’t do that in a freakin’ Webinar.
About lab work, my labs were virtual or remote setup of computers which I had to configure according to the requirements of the labs at the time. No, it wasn’t a Chemistry or Biology lab. 