OK I got my overall final grade in Calculus II. It is pretty low, only 80% and really made me wanna blame myself for not really studying on my finals because I had a bunch of work to do the week after. I studied for many hours the day after, but it is really bad idea for me to study the day after the exam. Now, there are no more math offered for my course. I want to know how to improve my skills in math? Should I step backward and study college algebra again or move to the next? But what is that? Currently, I'm studying linear algebra and I'm on the vector spaces topics. btw, is 80% grade pretty low? I'm so worried that I might not get into computer graphics research on this kind of grade.