Sophomore Intended Mechanical Engineering here. I have a pretty nice schedule this time around, all STEM classes. Most are easy but I have Differential Equations, Physics II, and Statics which are the hard ones. I have a lot of free time to study over the next few weeks and wanted to try to prepare myself for the hard subjects of these classes. If anyone has taken any of these classes could they please help enlighten me about what the hardest subjects in these classes are, so that I can study them in advance a bit to get a better grasp on them. Also any other advice would also be welcome, thanks.