Areas

Advanced Mathematical Thinking; Beliefs, Belief Systems, Beliefs Structures; Conceptual Change; Cognitive Psychology; Concept Formation, Concept Image, Concept Definition; Educational Psychology; Professional Development of Mathematics Teachers; Quantitative and Qualitative Research Methods; Teacher In-Service Training; Visualization.

Collaborations

• Katrin Rolka, University of Dortmund, Germany
• Peter Liljedahl, Simon Fraser University, Canada
• Erkki Pehkonen, University of Helsinki, Finland
• Markku Hannula, University of Helsinki, Finland, Tallinn University, Estonia
• Klaus Höchsmann, Pacific Institute of Mathematical Sciences, Vancouver, Canada
• Alan Schoenfeld, University of California, USA
• Raimo Kaasila, University of Lapland, Finland
• Anu Laine, University of Helsinki, Finland