If you’re trying to teach (or learn) general relativity remotely, this might be helpful: I have posted a complete set of introductory GR lectures (Khan academy style) on the youtube channel “Physics Unsimplified”. The early lectures are rough, but the later ones are much better. Here’s the link:
https://www.youtube.com/channel/UCsz6GM8EcLkaGIauutfSeJg/
Lecture slides with errata are posted here:
David Brown