Research
As a researcher, I have developed a strong international profile in the domain of science education. In addition, I have also done substantial research in the domains of teaching & teacher education, and higher education. In all of these three domains, I have supervised PhD students, and published in the respective top journals. I am being regarded as one of the leading scholars in the world in research on science teachers’ pedagogical content knowledge (PCK). I have published several highly cited articles about this topic, and have been invited to give talks and workshops about this topic all over the world. Currently, I am co-Editor-in-Chief of the International Journal of Science Education. In addition, I have been and am a member of the editorial boards of a range of (inter-)national scholarly journals (e.g., Science Education, Journal of Research in Science Teaching, Journal of Teacher Education, Review of Educational Research). My view is that an educational researcher should be engaged in issues of practice and policy. Therefore, I have published since 1987 in professional journals for science teachers, teacher educators and consultants. In addition, I continue to give lectures and keynotes at conferences for teachers, teacher educators, and at schools.