Thanks
I just loaded the app for it,definately will use it. The vid said grammer, but can't find it though
It is very strong on math, I like the way he breaks the difficult into digestable bits.
One thing he is doing is awarding badges for watching and for taking tests.
I like this idea , it is a positive reinforcement that costs him little , perhaps someday resumes will include the numkber and kind of Khan badges one has earned.
I think that Debategate could award badges , one for six weeks without flaming, one for each origional composition over 300 words, one for twenty pithy comments , one for accepting an opponents logic gracefully.
That last one might be seldom awarded.
