• Bruk av elevbøker i matematikk på ungdomssteget : ein kasusstudie 

      Opsal, Hilde (Doctoral Dissertations at the University of Agder;60, Doctoral thesis; Peer reviewed, 2013)
      The focus of this dissertation is on ways students and teachers work with the student-book in mathematics in lower secondary school. The intention is to study how it is integrated to the learning activity in the subject. ...