Courses

Today I checked my new time table for the next semester and rearranged it.
I added one course and dropped some other courses. The course I added was Computer Science (again through) and dropped ones are Chemistry and two Math courses. At the beginning of this term, I registered three Math courses because I wasn't sure which one I should take. But now it's clear, so I dropped the two courses. Then, for the coming semester, I'm going to take three courses again. ... It seems very few, but I've heard that the next Math course would be much harder than the course I just finished. So three courses for one semester would be enough for me.