Yi, Song-pok, Steve Kim, Kwon, Ku-hyon and Choe, Ye-kwon, all of the Far East District's geotechnical section provided students of Seoul American Elementary School with a lesson in terrain analysis and soil permeability Sept. 30. Activities such as these are part of the district's science, technology, engineering and math (STEM) initiative throughout all DoDDS schools in the Republic of Korea.