Contents

Peter Appelbaum,
«Mathematics as sculpture of utopia: changing how we think of models and modeling in mathematics education», p.3

Emmanouil Nikoloudakis,
«A Proposed Model to Teach Geometry to First-Year Senior High School Students», p.17

Sonia Kafoussi, Petros Chaviaris & Rijkje Dekker,
«Factors that Influence the Development of Students' Regulating Activities as they Collaborate in Mathematics», p.46

Michael Gr. Voskoglou,
«Mathematizing the process of learning a subject matter in the classroom», p.75

Editorial Board

Editor : Prof. Nikolaos Alexandris, University of Piraeus, President of the HMS
Editor in chief: Prof. Fragiskos Kalavasis, Aegean University

Executive Committee :
Ada Boufi, Athens University
Charalambos Lemonidis, University of West Macedonia
Constantinos Tzanakis, University of Crete
Chronis Kynigos, Athens University
Eugenia Koleza, University of Patras 
Despina Potari, Athens University
Theodosis  Zachariadis, Athens University
Sonia Kafoussi, Aegean University

International Scientific Committee (ISC) :
Abraham Arcavi (Israel), Evelyne Barbin (France), Mario Barra (Italy), Werner Blum (Germany), Constantinos Christou (Cyprus), Carlos Coreia de Sà (Portugal), George Dimakos (Greece), Rijkje Dekker (Netherlands), Abdellah El Idrissi (Morocco), Athanasios Gagatsis (Cyprus), Maria Kaldrimidou (Greece), Michaela Kaslova (Czech Republic), Manfred Kronfellner (Austria), Colette Laborde (France), Ewa Lakoma (Poland), Elena Nardi (UK), Mogens Niss (Denmark), Iman Osta (Lebanon), Stavros Papastavridis (Greece), Vasilis Papantoniou (Greece), Luis Radford (Canada), Charalambos Sakonidis (Greece), Man- Keung Siu (China), Nada Stehlikova (Czech Republic), Juliana Szendrei (Hungary), Evaggelia Tressou (Greece), Mariana Tzekaki (Greece).