I mentioned in one of my lectures, a book by Andrew Finch of Kyungpook Nat. Univ. in Daegu -- Visit Korea!
A great book for using a Korean cultural focus in class for learning / teaching English. Students really get motivated when you use a lot of "Korean" content. Take a look at his book page. I've also attached some of the books in .pdf for your quick use. The tasks to supplement the High School textbook is excellent!
I've done a few workshops with Andrew and I love his philosophy. Here is a video he produced which might give you some thought about your own classroom situation.
Find more videos like this on EFL CLASSROOM 2.0