"There are also unexpected synergies that emerge from this combination functions in a single repository. Members’ comments about various works will eventually (some time after launch) be publishable via #ActivityPub streams."
@Loukas asked: "Is there some kind of open platform where teachers share lesson plans and resources?" Greetings from Japan, and hope this helps:
At Humanities Commons you can set up a free Profile and site that is principally a blog or a Website - like I have at https://japanned.hcommons.org - and they have a repository called CORE to upload all sorts of publications and deliverables, in categories including "Course material or learning objects" (each assigned a DOI and connected to Google Scholar), an example of which you can see under "Work Shared in CORE" at https://hcommons.org/members/stevemccartyinjapan