Agree 100%, especially with rule #1. I typically take the Feynman route... http://thenearbypen.blogspot.com/2009/11/feynmans-father.html http://thenearbypen.bl

Agree 100%, especially with rule #1. I typically take the Feynman route... http://thenearbypen.blogspot.com/2009/11/feynmans-father.html http://thenearbypen.blogspot.com/2009/11/feynmans-father.htm... You'd be surprised how much of the 'complicated' stuff sticks, and comes back at a later time when they have an Aha! moment and it all clicks. By the way, I've learned sooo much doing this, e.g. I've recently discovered that Pluto isn't a planet anymore... :p