Teaching
| Sep. 2010 - May. 2011 | Teaching Assistant for "Problem Solving Using Computers" in UW-Madison |
| Mar. 2007 - Dec. 2007 | Tutor for "Game Programming" in Hallym University |
| Sep. 2006 - Dec. 2006 | Tutor for "Windows Programming" in Hallym University |
| Mar. 2006 - Jun. 2006 | Tutor for "Java Programming" in Hallym University |