These tools can enable virtual class meetings (as well as virtual office hours, an exam review session with an instructor or a TA, or even student presentations): simply let your students know when and where to "meet up" virtually.
Run through this "Teaching a Live, Online Session" checklist from OLC for some considerations to keep in mind/check out beforehand, and some resources to take in.
Here are instructions on how to record a Google Hangout if you would like to do so, using the premium feature available to all G Suite for Education accounts through September 30th, 2020 (due to the pandemic). And this slideshow has a step-by-step walkthrough, with screenshots, of how to use Google Hangouts: https://bit.ly/Hangouts-for-Instructors.
Step-by-step instructions for logging into Zoom, and additional Zoom walkthrough information and videos are available on our guide to Zoom: https://library.guilford.edu/zoom.
We have set up a Canvas integration: you will need to enable Zoom in your course menu from the Settings Navigation page. You can then setup meetings that students can access from within your Canvas course.
If a student does not have Internet, but have access to a phone, you could conduct coursework with them over the phone.
Students can also call in to many video conferencing meetings (including via Google Hangouts and Zoom) by phone, using the phone number provided. You would just need to verbally describe things you share on the screen (presentations, etc.).