PhD theses in Mathematics Education
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On measuring and theorising mathematical identity
(Doctoral dissertations at University of Agder;, Doctoral thesis, 2018) 
Developing an identity as a secondary school mathematics teacher : A narrative case study of three mathematics teachers in their transition from university teacher education to employment in school
(Doctoral dissertations at University of Agder, Doctoral thesis, 2018) 
Studying pupils’ mathematical thinking through problem solving and view of mathematics : Case studies of Finnish comprehensive school pupils
(Doctoral dissertations at University of Agder, Doctoral thesis, 2018) 
Local knowledge in mathematics teaching : A product of professional action
(Doctoral dissertations at University of Agder;, Doctoral thesis, 2017) 
Algebra at the start of Upper Secondary School : A case study of a Norwegian mathematics classroom with emphasis on the relationship between the mathematics offered and students’ responses
(Doctoral dissertations at University of Agder, Doctoral thesis, 2017)Norwegian students at the end of lower secondary school are according to international comparative studies weak in algebra. This thesis reports a study of a mathematics classroom at the start of upper secondary school, ... 
Teachers' implementation and orchestration of Cabriuse in mathematics teaching
(Doctoral thesis, 2008)This thesis reports from a study of three teachers¿ first ever use of a particular computer software tool, Cabri, in teaching at two lower secondary schools in Norway. The thesis gives a characterisation of teachers¿ ... 
Mathematics Teachers' Interpretation of the Curriculum Reform, L97, in Norway
(Doctoral thesis, 2007) 
The microculture of a mathematics classroom : Artefacts and Activity in Meaning making and Problem solving
(Doctoral dissertations at University of Agder;, Doctoral thesis, 2006) 
Learning and teaching functions and the transition from lower secondary to upper secondary school
(Doktoravhandlinger ved Universitet i Agder;78, Doctoral thesis; Peer reviewed, 2013) 
Bruk av elevbøker i matematikk på ungdomssteget : ein kasusstudie
(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 studentbook in mathematics in lower secondary school. The intention is to study how it is integrated to the learning activity in the subject. ... 
Reallife contexts in mathematics and students` interests : an Albanian study
(Doctoral dissertations at University of Agder;52, Doctoral thesis; Peer reviewed, 2012) 
Elevers matematikksamtaler : Læring i og mellom praksiser
(Doctoral dissertations at University of Agder;57, Doctoral thesis; Peer reviewed, 2012)The aim of this study “Students´mathematical conversations – Learning in and beween practices” is to examine students’ mathematical conversations and the students learning in and between practices. I study what characterizes ... 
Developing Algebraic Thinking in a Community of Inquiry : Collaboration between Three Teachers and a Didactician
(Doctoral Dissertations at the University of Agder, Doctoral thesis; Peer reviewed, 2009)In this thesis I report from a study of the development of algebraic thinking of three teachers, from lower secondary school, and a didactician from a university in Norway (myself). The thesis offers an account of ...