Bachelor of Science with honors, University Malaya, Malaysia, 1966. AM, Stanford University, 1983. Doctor of Philosophy, Oxford University, England, 1990.
Federal inspector of schools, Ministry of Education, Malaysia, 1973-1977; lecturer department science education, Institute Education, Singapore, Singapore, 1977-1984; head department science education, Institute Education, Singapore, Singapore, 1984-1987, 90-91; head division physics, National Institute Education, Singapore, 1991-1992; deputy head Center for Ednl. Research, National Institute Education, Singapore, since 1995; associate professor, Nanyang Technological U., Singapore, since 1994.
Member Association for Science and Mathematics Education (president 1975-1977), Educational Research Association (life, honorary secretary 1991-1993, vice president 1993-1997, president 1997-1999).
Married Swee-Har Lee, December 8, 1968. 1 child, Sheryl.