Vasilis Tselfes is Emeritus Professor at the Department of Early Childhood Education of the National and Kapodistrian University of Athens. He has undergraduate and postgraduate studies in Physics, a long teaching experience in the education of primary and pre-school education teachers and related research in Science Education and Solid-State Physics. His recent research interests include interdisciplinary approaches to Science teaching and learning and the effects of social-educational dynamics on the teaching-learning processes and curricula. He has published over 200 texts in international and Greek journals, collective volumes, conference proceedings and books.