Kazuo,
What works well for me
Math: take as many notes as you can without missing out on info. (it will change depending on how much drawing and/or graphing is needed). If your instructor offers it, look over the notes/slides/readings for the next class. If not offered up-front, ask. Many instructors will provide them, especially if you receive “special services” (I assume you do b/c private testing). Flashcards. MAKE THEM YOURSELF!!! The act of making them is just as much studying as running through them a few times (don’t forget to run throug them several times too 
). Do practice problems. If your homework is #4-12 even, do 5-11 odd & compare w/ the books’ answers. If it is available & you have the time: math study lab.