Vassilios Saltas is Scientific Associate at the Department of Computer, Informatics and Telecommunications Engineering of International Hellenic University, where he is in charge of the interinstitutional interdepartmental master’s program “Science Teaching and Modern Technologies.” Formerly, he was with the School of Pedagogical and Technological Education. He is also a secondary education mathematics teacher. He graduated from the Faculty of Mathematics and Informatics at the University of Sofia “St. Kliment Ohridski” in 1995. He has a PhD in Didactics of Mathematics (University of Sofia “St. Kliment Ohridski,” Faculty of Mathematics and Informatics, 2005). His PhD is in the field of Mathematics Teaching, more specifically on the position and role of problems in ancient Greek mathematics in modern Greek schools (“St. Kliment Ohridski” University of Sofia, Department of Mathematics and Informatics, 2005). His published work consists of more than 80 conference and journal papers, and he is the author of eight books.