Now it appears that Flash is dying. I'm now using Youtube. Youtube will make sure that its videos will be playable on every device. My hesitation in using your site is what happens if the site gets shutdown? Do I lose the videos? Will they be in a format that can be exported to another service? Is there a self hosting option? I couldn't tell from the main page and didn't sign up for an account.

Feature idea: The Stanford ML class videos ( http://www.ml-class.org/course/video/preview_list ) had a really cool feature -- superspeed viewing, which allows you to watch the video lesson at 1.2x or 1.5x speed. This is great if you want to quickly skim through the content.

"Students can watch Tablo lessons at home. No need to lecture in the classroom."

I'm not a teacher, but I imagine some portion of them would be offended by the "no need to lecture" bit. I know exactly what you mean, having watched the Khan Academy TED talk, but it might not come off the way you meant it to.

I co-founded Academy123 (2003). We licensed our product to AOL and we were acquired by Discovery Education (2006).

We did the very same thing: an online education platform for the rapid development and delivery of multimedia content.

In about 18 months, we enabled hundreds of math teachers to work from home and record 50,000 mini-videos (2-3 minutes in length) aligned with the most commonly-used textbooks in the U.S.

See demo content and screenshots, here: http://home.nutshellmath.com/en-us/applications_homework_hel...

I've got a lot of ideas in the space - would love to chat if you're interested.

There are various video creating, editing and sharing websites already available for teachers. Most content of much value ends up on youtube exclusively.

Disclaimer: I work in this field (tech in edu)

Wish them the best though :) Integrate Etherpad for more real time collabo ;) Would be great to have a time slider running along side the video to give more context / detail =)

http://search.dir.bg/search.php?textfield=%F2%E0%E1%EB%EE+&#...

Looks like a fantastic idea, would love to see how educators take advantage of it. A word of advice: I have FlashBlock on, and I had no idea how to use the interactive lesson. Plus, a giant Flash element appeared at the bottom of the page. Might want to add some kind of info for users without Flash so they understand what they need to use the site.

Any plans to let teachers share or sell lessons/lectures with one another?

I experienced some bugginess submitting forms with the unit name clearing my entry.

Is it possible to embed videos on external sites?

Only thing I dislike is how dull and drab the sample lesson is. I'd actually use it to teach (or re-teach) some concept that the audience is likely to remember.

Fantastic job.