[BwanaNdege]

When you are dissatisfied and would like to go back to youth, think of Algebra.

Khan Academy is FUN! Plus there are even a few good YouTube videos teaching Calculus!

(but then, I'm not OLD. I don't turn 70 until this Fall.)

;-)

[Ace the Biker]

I went to the Khan Acc as soon as I read this and now it’s two hours later, Been refreshing My 73 year old brain’s memory of Algebra. Thanks for this I will be spending a lot of time there.