Any math beyond Algebra and Geometry. Calculus and Trigonometry were completely alien to me. I tried really hard to understand the concepts and how to employ the formulas, but logarithms, antilogarithms, sines/cosines/tangents...it was like a foreign language to me.
Speaking of which, I also sucked at learning foreign language.
The frustration at these two areas of blatant misunderstanding was exascerbated by the fact that pretty much everything else I did in school came naturally to me. In most classes, I could forgo studying and still make an A or a B. In advanced math and foreign language I'd have to try really hard just to make a C, maybe a B if I was lucky.
Speaking of which, I also sucked at learning foreign language.
The frustration at these two areas of blatant misunderstanding was exascerbated by the fact that pretty much everything else I did in school came naturally to me. In most classes, I could forgo studying and still make an A or a B. In advanced math and foreign language I'd have to try really hard just to make a C, maybe a B if I was lucky.