Instead of worry about how school might end up fully online, start planning a lucrative career and business as a Professional Tutor (along with dozens, maybe thousands of employees).
I myself was none too happy when chalkboards started being replaced with whiteboard and those noxious fumed markers! (Plus that stuff doesn't usually wash out of clothing, whereas chalk does)
As to "normal" when teaching, it's whatever method is currently being used and varies from state to state and country to country. Some based upon a specific region and time of year (farm country as an example). My grandmother went through grade 12 in a one room schoolhouse.
Great news! If you are indeed a dinosaur, you can create online lessons, videos and such descriptioning your day to day life!
SO, calm down and have a pot of coffee along with some home baked bread.