• Article  

      Coding and decoding representations of 3D shapes 

      Pittalis, Marios; Christou, Constantinos (2013)
      The aim of this study is to examine students’ ability in interpreting and constructing plane representations of 3D shapes, and to trace categories of students that reflect different types of behaviour in representing 3D ...
    • Article  

      Developing the 3DMath Dynamic Geometry Software: Theoretical Perspectives on Design 

      Christou, Constantinos; Pittalis, Marios; Mousoulides,Nicholas G.; Jones, Keith (Research Information Ltd, 2007)
      Designing successful learning environments entails drawing on theoretical perspectives on learning while, at the same time, being cognisant of the affordances and constraints of the technology. This paper reports on the ...
    • Article  

      An empirical taxonomy of problem posing processes 

      Christou, Constantinos; Mousoulides,Nicholas G.; Pittalis, Marios; Pitta-Pantazi, Demetra; Sriraman, Bharath (2005)
      This article focuses on the construction, description and testing of a theoretical model of problem posing. We operationalize procesess that are frequently described in problem solving and problem posing literature in order ...
    • Conference Object  

      The predictive nature of algebraic arithmetic for young learners 

      Pittalis, Marios; Pitta-Pantazi, Demetra; Christou, Constantinos (2014)
      The present study revalidated a measurement model describing the nature of early number sense. Number sense was shown to be composed of elementary number sense, conventional arithmetic and algebraic arithmetic. Algebraic ...
    • Article  

      Problem solving and problem posing in a dynamic geometry environment 

      Christou, Constantinos; Mousoulides,Nicholas G.; Pittalis, Marios; Pitta-Pantazi, Demetra (The University of Montana, 2005)
      In this study, we considered dynamic geometry software (DGS) as the tool that mediates students' strategies in solving and posing problems. The purpose of the present study was twofold. First, to understand the way in which ...
    • Article  

      Proofs through exploration in dynamic geometry environment 

      Christou, Constantinos; Mousoulides,Nicholas G.; Pittalis, Marios; Pitta-Pantazi, Demetra (2004)
      The recent development of powerful new technologies such as dynamic geometry software (DGS) with drag capability has made possible the continuous variation of geometric configurations and allows one to quickly and easily ...
    • Book  

      Stereometry activities with Dalest. 

      Christou, Constantinos; Sendova, E.; Matos, J. F.; Jones, K.; Zachariades, Theodosis; Pitta-Pantazi, Demetra; Mousoulides, Nicholas G.; Pittalis, Marios; Boytchev, P.; Mesquita, M.; Chehlarova, T.; Lozanov, C. (University of Cyprus, 2007)
    • Book  

      Teaching geometry in primary school with the use of dynamic geometry software. 

      Christou, Constantinos; Pitta-Pantazi, Demetra; Mousoulides, Nicholas G.; Pittalis, Marios (2010)
    • Book  

      Teaching of calculus with the use of dynamic geometrical tools. 

      Zachariades, Theodosis; Pamfilos, P.; Jones, K.; Maleev, R.; Christou, Constantinos; Giannakoulias, E.; Levy, R.; Nikolova, L.; Kyriazis, G.; Pitta-Pantazi, Demetra; Diakoumopoulos, D.; Bizza, Irene; Souyoul, A.; Bujukliev, N.; Mousoulides,Nicholas G.; Pittalis, Marios (S. Athanasopoulos, E. Papademe, 2007)
    • Book Chapter  

      Tracing students' modeling processes in school 

      Mousoulides, Nicholas G.; Pittalis, Marios; Christou, Constantinos; Sriraman, Bharath (2010)
    • Article  

      Types of reasoning in 3D geometry thinking and their relation with spatial ability 

      Pittalis, Marios; Christou, Constantinos (2010)
      The aim of this study is to describe and analyse the structure of 3D geometry thinking by identifying different types of reasoning and to examine their relation with spatial ability. To achieve this goal, two tests were ...