A Blast from the Past!

Today a calculus student from my Spring 2009 class came to my office hours. He got a D in my class, so he's taking calculus again, but not with me. He says that I explain integration in a way that makes more sense to him than how his current teacher explains it, so could I go over integration with him?

Bonus fun: His current allegedly-confusing teacher will be one of my TAs in Spring 2010.