Osmo Projector is a new and simple tool to help with remote teaching.
Working directly off your iPad, Projector lets you take physical notes and share video with anyone who has joined you through Apple AirPlay, Skype, Google Meet, Zoom, or the conferencing app of your choice to share digital lessons in real-time.
You can even use Apple's screen record feature to record your lessons for later viewing.
The app is available free of charge on the Apple iTunes Store (not currently available on the Amazon App Store for Fire tablets):
Here's a recent Osmo blog post with instructions for Osmo Projector:
Here's a PDF manual: