All the professors in each class encourage the use of laptops and iPads during class. You are welcome to record their lectures only if you ask the lecturing professor's permission ahead of time. You must ask them permission each time you record, even if they've given you permission in the past. For your N112 class, I would highly recommend reading through the powerpoint and its presenter notes PRIOR to lecture and possibly condensing the info into a Word doc ahead of time so that you are able to take notes efficiently in class. The lectures move fast based on who is lecturing, and there is A LOT of info covered each lecture.