Professor Emeritus

Professor of Instructional Systems Technology, Indiana University

Professor of Education, University of Auckland; Academica University of Applied Sciences …

Professor of Educational Psychology and Educational Technology, Michigan State …

University of New South Wales, Sydney

Professor of Bicultural-Bilingual Studies

University of Fribourg (Switzerland)

Korea National University of Education

Ruhr Universität Bochum

Professor of mathematics education, University of Stavanger