Though US focused this list from the Online Colleges is useful nonetheless "For teachers hoping to infuse multimedia into their classrooms, YouTube makes for an excellent starting point. Plenty of universities, nonprofits, organizations, museums and more post videos for the cause of education both in and out of schools. The following list compiles some of the ones most worthy of attention, as they feature plenty of solid content appealing to their respective audiences and actively try to make viewers smarter."
"The Buck Institute for Education commissioned the cutting-edge advertising agency, Common Craft, to create a short animated video that explains in clear language the essential elements of Project Based Learning (PBL).
This simple video makes the essential elements of PBL come alive and brings to light the 21st Century skills and competencies (collaboration, communication, critical thinking) that will enable K-12 students to be college and work-ready as well as effective members of their communities."