Serendip is an independent site partnering with faculty at multiple colleges and universities around the world. Happy exploring!
Remote Ready Biology Learning Activities has 50 remote-ready activities, which work for either your classroom or remote teaching.
Computer Science, Humanities, and Other Science Learning
Scratch in particular, is a great tool for learning because it incorporates a lot of the internet exchanges of Serendip using a lot of similar concepts available on Powerpoint which is essentially the implicit function of computer science on learning.