Those are done by looking at their screens. The teachers are likely notified if anyone is not looking at their Zoom window and then just go over and see what th

Those are done by looking at their screens. The teachers are likely notified if anyone is not looking at their Zoom window and then just go over and see what they're doing. Searching for topics that happen to cross your mind is hard to resist, and the students likely don't care if the teachers know they are searching about LGBT rights or clicking on the Google Doodle. Why would they?