Free World U, a free pre K-12 online learning center (http://www.freeworldu.org)

anyone tried this one? It's free

No, but I signed up, thanks!

I don't think I could use a curriculum based completely on flashcards.
Did I miss something in that?

Also, I don't like the "about evolution" section. "Noncontroversial science"?

Maybe I'm reading it wrong, but it just sounds to me like they are trying to teach a touchy subject in a way that doesn't violate anyones beliefs, or giving you the option of skipping it if it does.

We haven't tried it yet, I was just going thru the tutorial, so I don't know about the flashcard part yet.