New KOSEN’s had been established at King Mongkut’s Institute of Technology, Ladkrabang (KMITL) in 2019 and at King Mongkut’s University of Technology, Thonburi (KMUTT) in 2020. They are abbreviated as “KOSEN-KMITL” and “KOSEN KMUTT,” respectively. The author was dispatched to KOSEN-KMITL in 2019–2020 as a mathematics instructor. They are really new education system in Thailand, therefore we need to develop the curriculum, textbooks, syllabi, handouts in class, drills, and other every kind of education methodology. The author had edited four textbooks as well as daily drills, examination questions and answers within these two years. In addition, he was twice involved in the admission office for developing the entrance examination. Still after returning Japan, he continues to write other textbooks because the tasks in Bangkok are rather heavy for the present instructors.
https://ror.org/01ta2g450 
