I'll be going to Korea in a couple of weeks! Last Sunday was the final Korean classroom for the summer, until sometime in August after I return from Korea.
During this class I taught about several basic time words - words that are used when talking about the time. Some of these include 동안, 아까 and 방금, 지금 and 이제, 나중에 and 이따(가), and many more. Here's the summarized version of the class.