Online teaching tip: when using a video system to lecture or communicate, the 1st thing you should learn (besides how to connect to the system) is how to mute all the other users. Somebody will have a hot mic. Save them the embarrassment. #TheMoreYouKnow Thx @FirstGenPhys! https://twitter.com/drsekula/status/1240822305137266689/photo/1 https://chirp.cooleysekula.net/attachment/63708