He probably meant to post these links:

http://www.learner.org/resources/bro...ageField2.y=15

http://www.learner.org

He had previously posted them in another mathematics thread.

I personally didn't find the site very useful. They go *way* too slow for my liking. It's more like a "this is how you should teach" rather than actual teaching. But anyway, I think that those are the links he was referring to.