A few resources for teachers to check out. 

TeamViewer is a remote support app. You download it, then run it. Then I can request remote access to your computer to support you from anywhere on the internet.

The Google Apps you should be familiar with by now. If not, check them out and learn your way around. Meet is for meetings, hangouts is for text/voice/video communication, and classroom is for classes.

GoGuardian Teacher allows you to view what your students are doing on their Chromebooks. I need to set some stuff up for you in the admin console, so please let me know if you are interested. Their website has training videos, so check them out and let me know if you want to be set up. https://training.goguardian.com/