Blogging about Economics

I'm sitting in ECON now, and need something to fill the other half of my mind.

• My professor is actually pretty good. He has a tiny bit of an accent, but not so much that it affects comprehension at all. He speaks clearly, makes clear points, and turns to face the class often, even while making a graph on the board. He is speaking from a powerpoint, but it looks like he's using it as a tool, not a crutch.
• However, it's 20 minutes into class, and already I'm blogging. A 0-hundred level class is bound to be easy compared to the 400-level and 500-level classes I've been taking. I should take that as an opportunity to get an A, and put the effort in to get that A (yes, it will take some effort), rather than slacking off because of the easiness.
  
• The trick is (I think), finding something to do during class that occupies half my mind, so I can still listen (and pay attention) to lecture, without getting bored and losing my attention entirely. In the past I've tried reading the textbook, and that's probably worth another try, but I doubt it'll work. Right now, blogging seems to be working, but I don't know if I can really spend an hour and a half a day (or ~45 CPU minutes :-) ) blogging. Working on code or the like is usually an all-or-nothing activity that consumes all of my attention while I'm doing it, so that probably wouldn't be a good choice for an activity during class.