Distinguished Professor of Education, The Pennsylvania State University, USA

Professor of Educational Technology. University of La Laguna, Spain, Facultad de …

Anadolu University

Professor of Education, UMBC

Catedrático Emérito - (Emeritus Professor) UNED - Spain

Distinguished Professor Emeritus, Concordia University

Professor of Instructional Design and Technology, Virginia Tech

Professor, University at Albany, School of Education, Educational Theory and Practice

Professor, Education, University of Oldenburg, Germany

Professor, Helen LeBaron Hilton Chair, School of Education, Iowa State University