Khan Academy . . . Shhhh?

I'm probably not supposed to tell you this but Khan Academy is a really effective, addictive and organized tool to get your kids to learn some extra math -- and it's especially attractive to boys because of the video game type features: points, badges, and unlocking levels . . . but I'm assuming parents are keeping it a secret, in the hopes that their son or daughter will be the only child to reap the benefits, and so here on Sentence of Dave, I'm officially busting the curve (and this is thanks to a fellow soccer parent, who graciously mentioned the site to me . . . if he wouldn't have said something, I still wouldn't know about it).