zenzi, have you tried getting together with other math students to study together or go through problem sets together? If that it’s not an option, how about finding an empty classroom where you can study and standing in front of the white/chalk board and working out problems on the board? If you can’t use a classroom or lecture hall, you could buy a large white board for your room and achieve the same physical setup. Then you could either copy the problems onto paper by hand or take photos and paste the images into a doc and print them or email them to your professor. This way, you can use the energy of your physical body in standing and writing large figures with a marker, you can talk the problems out loud and mistakes can be easily erased.