ผู้เขียน: Francis J. Lopez-Real

Frederick Leung is a professor of mathematics education at The University of Hong Kong, specializing in international comparison of curriculum, and the relationship between culture and mathematics teaching and learning Klaus-D. Graf is a professor of computer science at Freie Universitaet Berlin, Germany, specializing in applications in education and society Francis Lopez-Real is a professor of mathematics education at The University of Hong Kong, specializing in problem-solving and dynamic geometry