Combo: E=mc2/Einstein's gravity equation

The E=mc2 is fairly straightforward algebra with some basic calculus which most advanced H.S. students should be able to follow. In any event, following the basic calculus will be an education in and of itself leading to a better ability to do some calculus. So nothing lost here, only gained! The Einstein gravity equation will take some extra effort to grasp, this is true. Just try a bit harder and you will get it. Yes! But nothing is lost in the math steps presented so I'm still giving it a 5-Star rating.