You can record the lecture (as long as the class size is small and you are in the front) while you are taking
notes using their special notebooks. Then you can listen back, correct your
notes, add to your notes, download it to the computer, make a study guide, etc. It is pretty cool actually. It is kind of pricey but I think it does help.
And just so people know, I have no affiliation with Livescribe whatsoever.