Duke is captivating, and he makes a clear argument that students don't learn what we think we teach because they're too busy learning what we're actually teaching, which is, often, that precision is more important than understanding and that grades matter. The solution, he argues, is to teach, over and over, the things that we actually want our students to remember after the semester is over. And, that we should not defer learning about "The Good Stuff" until after they've suffered through boring prerequisites. Instead, we should teach the good stuff first and teach what we really enjoy.
via Darren Kuropatwa: http://goo.gl/y68VA