Homework-ology

Homework is such a staple of education that most of us take it for granted (or wish it didn't exist). But done the right way, it can make a big difference in how much a student gets out of a class. Multiple choice questions are easy to come up with, answer, and grade, but are they effective at teaching or testing knowledge? I'm sure there have been all sorts of studies on testing in schools, but it'll be interesting to see the results of Rosie Redfield's experiment with her undergrad biology class.