He holds Ph.D. in Mathematics Education from the University of Tsukuba, Japan and has long experiences in studying Japanese lesson study for more than 15 years. His main research focus and publications revolve in Mathematics Education and teaching style of Lesson Study and Open Approach. These could make him being well-known as the first group of Thailand’s educators on implementing this issue to develop mathematics teaching and learning. He has been invited to be a visiting researcher at Naruto University of Education in 2005 and at the University of Tsukuba in 2007.