I'm not really supposed to say this, but when you're having fun at something you tend to remember everything you do at that time. At my situation, I'm having fun learning. ^_^;
I like History because it's as simple like reading a novel! (*≧▽≦) It's easy for me, so I guess it will be easy for a math genius like you as well. (^▽^*)
....what? :O Math is my favourite subject. I'm planning to take actuarial science in uni next year, which require 4 subjects on mathematics alone, lmao. You must learn to love it, it's fun!