I know you like KA. It might be more accurate to say that I don't decry the existence of Khan Academy or worry about it much. Basically, Khan Academy is usuall

I know you like KA. It might be more accurate to say that I don't decry the existence of Khan Academy or worry about it much. Basically, Khan Academy is usually supplemental mathematics instruction, that is mathematics instruction for people who would otherwise be getting even less mathematics instruction without it. I can live with that. I recommend several other programs much more than I recommend Khan Academy. I have one child (among four) who actively likes Khan Academy, but he uses a lot of other resources besides Khan Academy to learn his mathematics. (His favorite subject is life sciences, and his biggest leisure-time activity is realistic drawing with computer-based drawing software.) So I agree with you that Khan Academy is not a panacea. I rather suspect that the staff of that organization agree with that proposition too. I do think that much of the criticism of Khan Academy from people who have products to sell to the public school system loses force because they haven't fully shown that they can do any better. If they do improve upon what Khan Academy does, more power to them.