Yuji Otsuka is serving as a Science Education Specialist in SEAMEO RECSAM, Penang since March 2019. He served as a Senior Volunteer of Japan International Cooperation Agency (JICA) in Training Programme Division, SEAMEO RECSAM since 2016 to 2018. He conducted several practical science courses and workshops in the last three years. He was a science teacher in Japan for over 30 years. He had also served as JICA Senior Volunteer on Science and Mathematics Education in the Independent State of Papua New Guinea. He was engaged in Super Science High School (SSH) Project organised by the Ministry of Education Japan as a SSH project promotion chief. He had also conducted research on “Teaching Methods for Encouraging Motivation to Learn Science” at Graduate School of International Development and Cooperation, Hiroshima University, Japan. He had been involved in JICA Long-Term Expert on Science Education (Project for Improving Science and Mathematics Education in Elementary and Junior High Schools in Ghana) in the Republic of Ghana. He had been also engaged in preparatory education on physics for Malaysian students preparing to study in Japan at Malaya University in Malaysia under the long-term teacher dispatch project organised by the Ministry of Education, Culture, Sports, Science and Technology of Japan.