Ingvald Erfjord

Teachers and researchers inquiring into mathematics teaching and learning : the case of linear functions

Barbro Grevholm, Per Sigurd Hundeland, Ingvald Erfjord, 2007 .

Teachers’ Initial Orchestration of Students’ Dynamic Geometry Software Use: Consequences for Students’ Opportunities to Learn Mathematics

Ingvald Erfjord, 2011, Technol. Knowl. Learn..

Teachers' implementation and orchestration of Cabri-use in mathematics teaching

Ingvald Erfjord, 2008 .

Teachers' Implementation and Orchestration of Cabri

Ingvald Erfjord, 2009 .