If you don't know it, you don't know it, so you'll have to go back to the lesson it's in an figure it out that way. Personally, I find learning vocabulary first with Kanji and hiragana and then doing kanji on its own is a more effective way to learn kanji. That way, you're not completely in the dark all the time and you start to recognize some kanji that way as well.
June 2, 2014 at 12:20am