@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

In their guide for educators to get started, the first categories they mention are Syllabus and Course Material collections: https://team.hcommons.org/2019/08/20/the-educators-guide-to-humanities-commons

Humanities Commons has a Mastodon instance as well, at https://hcommons.social/home

#education #school #teaching #OpenEducation #OpenAccess #OER #HigherEducation #HigherEd #AcademicMastodon #AcademicFedi #HumanitiesCommons #GoogleScholar @edutooter @academicchatter