I always do best with flash cards for the vocabulary. It doesn't work for me just to see it or hear it; if I want to learn the words, I have to say it, over and over, along with the meaning & sometimes its form of conjugation. That way, I have the memory of the words in my throat & mouth. (I'm probably awesome to sit next to in tests, since I do end up muttering throughout them. :D) And writing it on flashcards also allows me to write every word out, obviously, and to see it over and over again, not necessarily in the same order or all English first or foreign language first.

It puts it in your short-term memory, but you can keep it longer if you do it enough.

This might not be the most helpful thing if you typically have no trouble with vocab, though. It's just my method of coping, given that I pick up the grammar with very little trouble but my vocabulary is usually shit unless I work very hard at it.