Peter H. Sawchuk is Professor of Sociology & Equity Studies in Education as well as Industrial Relations at University of Toronto. He is the Chair of the International Advisory Committee for the Conference on Researching Work and Learning. He is also a founding member of the University of Toronto's Centre for the Study of Education and Work. Newton Duarte is a full professor in Philosophy of Education at the Universidade Estadual Paulista (UNESP) in Brazil where he is the Director of the PhD Program in School Education. He holds large-scale grants from the Brazilian National Governmental Institution for Scientific and Technologic Development and has won post-Professorial honors at UNESP. Mohamed Elhammoumi is Associate Professor at the Department of Psychology, College of Social Sciences at the Imam Muhammad Ibn Saud Islamic University in Saudi Arabia. He has published numerous papers on child development, cultural psychology, and the role of culture and family structures on the development of mental abilities, proportional reasoning and cognitive development including Socio-Historicocultural Psychology: Lev Semenovich Vygotsky: A Bibliographical Notes .