Interesting thoughts! I'd agree about the age range, maybe even as young as 10 or 11. I'm sure it shouldn't be too difficult to approach the needs of different audiences, as all such a platform would have to do is provide the space for content to be shared; the actual flashcards, videos, other content would be produced by users of the platform. This would in turn also benefit learning (teaching others is one of the best ways to ingrain knowledge).
Hi Claudia, You're very welcome! I'm glad my questions helped you work out some more specifics! I appreciate the extensive response to my questions as well. I think ideas a) and c) have a lot of potential—video calls used in this way could be quite powerful, and forming partnerships with schools could also be very beneficial. Would love to see where this goes.