- 2001 - 2009 National Institute for Educational Policy Research National Institute for Educational Policy Research
- 2001 - 2009 Curriculum Director, Curriculum Research Center, National Institute for Educational Policy Research
- 2009 - - 国立教育政策研究所名誉所員
- 2009 - - 静岡大学大学院教育学研究科教授
- 2009 - - Honorary Researcher, National Institute for Educational Policy Research
- 2009 - - Professor, Graduate School of Education, Shizuoka University
- 2006 - - 日本学術会議連携会員
- 2006 - - Affiliate Member, Science Council of Japan
- 1998 - 2000 国立教育研究所科学教育研究センター科学教育研究室室長
- 1998 - 2000 Chief, Science Education Section, Center for Science Education, National Institute for Educational Research
- 1987 - 1998 国立教育研究所科学教育研究センター数学教育研究室室長
- 1987 - 1998 Chief, Mathematics Education Section, Center for Science Education, National Institute for Educational Research
- 1990 - 1990 イギリス・サウサンプトン大学等 文部省在外研究員
- 1990 - 1990 Visiting Researcher, Southampton University, UK
- 1985 - 1986 国立教育研究所科学教育研究センター主任研究官
- 1985 - 1986 Senior Researcher, Center for Science Education, National Institute for Educational Research
- 1980 - 1985 国立教育研究所科学教育研究センター数学教育研究室研究員
- 1980 - 1985 Researcher, Mathematics Education Section, Center for Science Education, National Institute for Educational Research
- 1981 - 1982 西ドイツ・ハンブルグ、ユネスコ教育研究所アソシエートエキスパート(1年)
- 1981 - 1982 Associate Expert, Unesco Institute for Education, Humburg
- Shizuoka University Graduate School of Education, Division of Advanced Practice in School Education, Graduate School of Education Professor