1. Appropriating geometric series as a cultural tool: a study of student collaborative learning

   • Martin Carlsen

   OriginalPaper 27 February 2010 Pages: 95 - 116

   

2. How reform curricula in the USA and Korea present multiplication and division of fractions

   • Ji-Won Son
   • Sharon L. Senk

   OriginalPaper 09 March 2010 Pages: 117 - 142

   

3. Eighth grade students’ representations of linear equations based on a cups and tiles model

   • Günhan Caglayan
   • John Olive

   OriginalPaper 26 February 2010 Pages: 143 - 162

   

4. To see or not to see: analyzing difficulties in geometry from the perspective of visual perception

   • Hagar Gal
   • Liora Linchevski

   OriginalPaper 26 February 2010 Pages: 163 - 183

   

5. Abduction—A logical view for investigating and initiating processes of discovering mathematical coherences

   • Michael Meyer

   OriginalPaper 08 April 2010 Pages: 185 - 205