2023

• Academic lecture
  Strømskag, Heidi. (2023) The Role of Algebra in the Modelling of Real-World Systems. Stockholms universitet Nordic Network of Algebra Learning , Stockholm 2023-09-20 - 2023-09-21
• Academic lecture
  Strømskag, Heidi. (2023) Some ATD tools to study mathematics teaching practices and related curricular resources. Institutt for lærerutdanning, NTNU Gjesteforelesning , Trondheim 2023-09-08 - 2023-09-08
• Academic lecture
  Strømskag, Heidi. (2023) Matematisk modellering i et nytt didaktisk paradigme . Nord Universitet Gjesteforelesning , Levanger 2023-05-12 - 2023-05-12

2022

• Academic lecture
  Strømskag, Heidi. (2022) Study and research paths in teacher education. Institut for Naturfagenes Didaktik Seminar ved Københavns Universitet , Digital 2022-05-27 - 2022-05-27
• Academic lecture
  Strømskag, Heidi. (2022) SRPs in teacher education: Naturalization of knowledge as an obstacle to questioning the knowledge to be taught. Centre de Recerca Matemàtica 7th International Conference on the ATD , Barcelona 2022-06-19 - 2022-06-23
• Academic lecture
  Strømskag, Heidi; Chevallard, Yves. (2022) Conditions for revitalizing the elementary algebra curriculum. European Society for Research in Mathematics Education 12th Congress of the European Society for Research in Mathematics Education , Digtial 2022-02-02 - 2022-02-05
• Academic lecture
  Strømskag, Heidi. (2022) Algebra as a modelling tool in student teachers’ investigations of the natural and social world . Karlstads universitet Nordic Network of Algebra Learning , Karlstad 2022-12-05 - 2022-12-06
• Academic lecture
  Strømskag, Heidi. (2022) Interdisciplinary study and research paths on climate change in a teacher education programme in mathematics and natural sciences (Grade 8–13). Universitetet i Agder KLæM 22 , Kristiansand 2022-09-19 - 2022-09-21
• Poster
  Fleischmann, Yael; Rønning, Frode; Strømskag, Heidi. (2022) Modelling climate change – the CiviMatics project’s approach to connect mathematics education and political education. 12th Congress of the European Society for Research in Mathematics Education (CERME12) 2022-02-02 - 2022-02-06
• Academic lecture
  Strømskag, Heidi; Chevallard, Yves. (2022) Didactic transposition of concavity of functions. INDRUM 4th Conference of the International Network for Didactic Research in University Mathematics , Hannover 2022-10-19 - 2022-10-22
• Academic lecture
  Strømskag, Heidi. (2022) Breaches of the didactic contract as a driving force behind learning and nonlearning. A story of flaws in the proof of a famous theorem. Institutt for lærerutdanning, NTNU Symposium , Trondheim 2022-03-28 - 2022-03-29

2021

• Academic lecture
  Fleischmann, Yael; Rønning, Frode; Strømskag, Heidi. (2021) Modelling of climate change in the CiviMatics project . Gesellschaft für Didaktik der Mathematik Herbsttagung des GDM-Arbeitskreises 'Mathematik und Bildung' , Digital 2021-10-22 - 2021-10-22

2019

• Academic lecture
  Strømskag, Heidi. (2019) Prospective teachers inquiring into an involved problem of percents: An analysis of conditions and constraints using ATD tools . Centre de Recerca Matemàtica IRP Advances in the Anthropological Theory of the Didactic and their consequences in curricula and in teacher education , Barcelona 2019-06-17 - 2019-06-28
• Academic lecture
  Rønning, Frode; Strømskag, Heidi. (2019) Sense and reference of signifiers for elements of polygons. Freudenthal Group, Utrecht University & ERME Eleventh Congress of the European Society for Research in Mathematics Education (CERME 11) , Utrecht 2019-02-06 - 2019-02-10
• Academic lecture
  Mangiante-Orsola, Christine; Perrin-Glorian, Marie-Jeanne; Strømskag, Heidi. (2019) La théorie des situations didactiques comme outil pour comprendre et développer les pratiques professionnelles des enseignants en mathématiques. L'Assoc. pour la recherche en didactique des mathématique Séminaire de didactique des mathématiques de l’ARDM , Paris 2019-03-28 - 2019-03-29
• Academic lecture
  Strømskag, Heidi. (2019) Overgang fra matematikk i skolen til matematikk i høyere utdanning. Årsmøte i Norsk Matematikkråd , Stavanger 2019-09-18 - 2019-09-20

2018

• Academic lecture
  Strømskag, Heidi. (2018) Tensions between the mathematical knowledge at stake and the situational models used to illustrate the knowledge: A case from a Norwegian 3rd grade classroom. Universitat de Barcelona Seminar , Barcelona 2018-12-13 -
• Academic lecture
  Strømskag, Heidi. (2018) A model for instructional design in mathematics implemented in teacher education. University of Agder INDRUM 2018 Second Conference of the International Network for Didactic Research in University Mathematics , Kristiansand 2018-04-05 - 2018-04-07
• Popular scientific lecture
  Strømskag, Heidi. (2018) Why do some people have problems comprehending mathematics?. Forum for matematiske perler , Institutt for matematiske fag, NTNU 2018-09-07 - 2018-09-07
• Academic lecture
  Strømskag, Heidi. (2018) Didactical design for the mathematics classroom. LaUDiM Language Use and Development in the Mathematics Classroom , Trondheim 2018-11-28 - 2018-11-29

2017

• Academic lecture
  Strømskag, Heidi. (2017) A methodology for instructional design in mathematics. Stockholm University, NORME Eighth Nordic Conference on Mathematics Education , Stockholm 2017-05-30 - 2017-06-02
• Academic lecture
  Rønning, Frode; Strømskag, Heidi. (2017) Entering the mathematical register through evolution of the material milieu for classification of polygons. Tenth Congress of the European Society for Research in Mathematics Education (CERME 10) , Dublin 2017-02-01 - 2017-02-05
• Academic lecture
  Strømskag, Heidi. (2017) Combining the theory of didactical situations and semiotic theory in an investigation of students’ enterprise of representing a relationship in algebraic notation. Mathematics Education Centre MEC Symposium. Algebra: Gateway to mathematics, science, society and the world , Loughborough University 2017-05-24 - 2017-05-25
• Academic lecture
  Strømskag, Heidi. (2017) A methodology for instructional design in mathematics. Universität Augsburg, Institut für Mathematik Oberseminar Didaktik der Mathematik , Augsburg 2017-07-10 -
• Academic lecture
  Strømskag, Heidi; Jaworski, Barbara. (2017) Modelling situations involving equal-sized groups. Nanyang Technological University PME 41 , Singapore 2017-07-17 - 2017-07-22
• Academic lecture
  Strømskag, Heidi; Valenta, Anita. (2017) Justification of commutativity of multiplication at Grade 6. European Society for Research in Mathematics Education Tenth Congress of the European Society for Research in Mathematics Education (CERME 10) , Dublin 2017-02-01 - 2017-02-05
• Academic lecture
  Mangiante-Orsola, Christine; Perrin-Glorian, Marie-Jeanne; Strømskag, Heidi. (2017) Theory of didactical situations as a tool to understand and develop mathematics teachers' practices. Laboratoire de Didactique André Revuz Symposium Frengly 3 , Université Paris-Diderot 2017-11-16 - 2017-11-18
• Academic lecture
  Strømskag, Heidi. (2017) Instruksjonsdesign i matematikk - en epistemologisk modell for en spesiell matematisk kunnskap. Fagseksjon for matematikk Seminar ved Institutt for lærerutdanning , Institutt for lærerutdanning 2017-11-17 - 2017-11-17

2016

• Academic lecture
  Strømskag, Heidi. (2016) Designing didactical situations for the elementary classroom: Conditions that enable or hinder mathematics learning . The LaUDiM project Advisory Board meeting for the LaUDiM project , Faculty of Teacher and Interpreter Education, NTNU 2016-06-16 - 2016-06-17
• Academic lecture
  Strømskag, Heidi. (2016) Evolution of the milieu for a particular piece of mathematical knowledge . Gesellschaft für Didaktik der Mathematik - GDM The Thirteenth International Congress on Mathematical Education , Hamburg 2016-07-24 - 2016-07-31
• Academic lecture
  Mangiante, Christine; Perrin-Glorian, Marie-Jeanne; Strømskag, Heidi. (2016) Using TDS to understand and develop mathematics teaching in primary classrooms in France and Norway. Laboratoire de Didactique André Revuz Symposium Frengly 2 , Université Paris-Diderot 2016-07-06 - 2016-07-08
• Academic lecture
  Strømskag, Heidi. (2016) Interaction in the mathematics classroom - from the perspective of two different theories. Loughborough University Mathematics Education Centre Seminar , Loughborough 2016-03-17 -

2015

• Academic lecture
  Strømskag, Heidi. (2015) Analyse av kvalitative data ved koding og kategorisering. SkrivSats forskergruppe Seminar for forskergruppen SkrivSats , HiST-ALT 2015-02-25 -
• Academic lecture
  Strømskag, Heidi. (2015) A pattern-based approach to elementary algebra. Charles University 9th Congress of the European Society for Research in Mathematics Education , Praha 2015-02-04 - 2015-02-08
• Academic lecture
  Strømskag, Heidi. (2015) On the notion of an epistemological model. Matematikkseksjonen ved HiST-ALT Seminar i matematikkdidaktikk , Høgkolen i Sør-Trøndelag 2015-05-26 - 2015-05-27
• Academic lecture
  Strømskag, Heidi. (2015) Transformation between different registers of semiotic representation of a mathematical object: A challenging task. European Conference on Educational Research (ECER 2015) Symposium “The Role of Mathematical Tasks in Promoting Domain-Specific and Domain-Transcendent Mathematical Reasoning" , Corvinus University of Budapest 2015-09-07 - 2015-09-11
• Lecture
  Strømskag, Heidi. (2015) Flislegging for å finne en sammenheng mellom to typer tall. Norsk senter for matematikk i opplæringen Novemberkonferansen , Trondheim 2015-11-24 - 2016-11-25
• Academic lecture
  Strømskag, Heidi. (2015) Comparing and contrasting two theoretical approaches to social interaction in the mathematics classroom - The theory of didactical situations and the theory of social interactionism. University of Gothenburg Seminar, University of Gothenburg 2015-12-16 -
• Academic lecture
  Strømskag, Heidi. (2015) TDS: Teorien for didaktiske situasjoner i matematikk – en modell og et analyseverktøy. Høgskolen i Sør-Trøndelag Faglig forum , Avdeling for lærer- og tolkeutdanning 2015-05-07 -
• Academic lecture
  Strømskag, Heidi. (2015) Language use and development in the mathematics classroom: On the TDS. The LaUDiM project Research meeting with the reference group of LaUDiM , Høgskolen i Sør-Trøndelag 2015-06-02 - 2015-06-04
• Academic lecture
  Strømskag, Heidi. (2015) Fra faktorer som hindrer algebraiske generaliseringsprosesser til design av epistemologiske modeller . Institutt for matematiske fag Seminar ved Institutt for matematiske fag , NTNU 2015-04-09 - 2015-04-09

2014

• Academic lecture
  Strømskag, Heidi. (2014) Students’ mathematical activity constrained by the milieu: a case of algebra. University of Turku Seventh Nordic Conference on Mathematics Education , Turku 2014-06-03 - 2014-06-06
• Academic lecture
  Måsøval, Heidi Strømskag. (2014) Building on the concept of milieu - in an open coding process. Université Paris Diderot Symposium on French and UK research on mathematics teaching , Paris 2014-01-30 - 2014-02-01
• Academic lecture
  Måsøval, Heidi Strømskag. (2014) Student teachers’ pattern generalisation conceptualised through the theory of didactical situations in mathematics. Institut for Naturfagenes Didaktik Seminar, Københavns universitet , København 2014-09-05 -
• Academic lecture
  Måsøval, Heidi Strømskag. (2014) Et epistemologisk perspektiv på matematikkundervisning: et eksempel fra algebra. Nasjonalt råd for lærerutdanning, UHR Nasjonal konferanse om karaktersetting i matematikk i lærerutdanning , Trondheim 2014-09-09 - 2014-09-10
• Academic lecture
  Clarke, David; Strømskag, Heidi; Johnson, Heather Lynn; Bikner-Ahsbahs, Angelika; Gardner, Kimberley. (2014) Research Forum: Mathematical tasks and the student. International Group for the Psychology of Math Education PME 38 , Vancouver 2014-07-15 - 2014-07-20

2013

• Academic lecture
  Måsøval, Heidi Strømskag. (2013) Formation of a gap between a teacher’s intention and students’ mathematical activity. Göteborgs universitet Seminar, Göteborgs Universitet , Göteborg 2013-09-26 -
• Academic lecture
  Måsøval, Heidi Strømskag. (2013) From recursive to explicit formula for the n-th member of a sequence mapped from a shape pattern. European Society for Research in Mathematics Education Eighth Congress of European Research in Mathematics Education , Antalya 2013-02-06 - 2013-02-10
• Academic lecture
  Måsøval, Heidi Strømskag. (2013) Shortcomings in the milieu for algebraic generalisation arising from task design and vagueness in mathematical discourse. International Commission on Mathematical Instruction ICMI 22 Study Conference on Task Design in Mathematics Education , University of Oxford 2013-07-22 - 2013-07-26
• Academic lecture
  Måsøval, Heidi Strømskag. (2013) Algebra i meningsfylte kontekster: Representasjon av generalitet i mønster. Nasjonalt senter for matematikk i opplæringen Seminar, Nasjonalt senter for matematikk i opplæringen , Trondheim 2013-11-22 -
• Academic lecture
  Måsøval, Heidi Strømskag. (2013) An adidactical milieu that fails to prepare for an intended statement of equivalence. Kiel University PME 37 , Kiel 2013-07-28 - 2013-08-02

2012

• Academic lecture
  Måsøval, Heidi Strømskag; Burheim, Oda Tingstad. (2012) Forskningsbasert masterutdanning i matematikkdidaktikk. Høgskolen i Sør-Trøndelag Studiekvalitetsdagen ved HiST , Trondheim 2012-09-18 -
• Academic lecture
  Måsøval, Heidi Strømskag. (2012) Similarities and differences between didactical phenomena and patterns of mathematical interaction: Comparing Elements of the French School of Mathematics Education with elements of the Theory of Social Interactionism. University of Agder Ph.D. trial lecture , Kristiansand 2012-02-09 - 2012-02-09
• Academic lecture
  Måsøval, Heidi Strømskag. (2012) Faktorer som begrenser studenters etablering av algebraisk generalitet i figurmønstre. Universitetet i Tromsø Konferanse for lærerutdannere i matematikk , Sommarøya 2012-09-24 - 2012-09-27

2010

• Academic lecture
  Måsøval, Heidi Strømskag. (2010) Algebraisk generalisering: Når målet er en matematisk setning som uttrykker en relasjon mellom tallfølger. Landslaget for Matematikk i Skolen Lokallagsamling for Landslaget for Matematikk i Skolen , Gardermoen 2010-02-05 - 2010-02-07

2008

• Academic lecture
  Måsøval, Heidi Strømskag. (2008) Complexity of operating beyond naïve empiricism when proving a conjectured formula for the general term of a geometrical pattern. 5th Nordic Conference on Research in Mathematics Education , Copenhagen 2008-04-21 - 2008-04-25
• Academic lecture
  Måsøval, Heidi Strømskag. (2008) Expressing and justifying generality in geometrical patterns: A case study of first-year student teachers' small-group collaboration at a university college. Universitetet i Agder, Institutt for matematiske fag Presentation of preliminary doctoral dissertation , Universitetet i Agder 2008-04-11 -
• Academic lecture
  Bergsten, Christer; Fuglestad, Anne Berit; Måsøval, Heidi Strømskag; Wedege, Tine; Hannula, Markku S.. (2008) Research questions and themes for future research in mathematics education. Plenary Panel. The 5th Nordic Conference on Research in Mathematics Education , København 2008-04-21 - 2008-04-25

2007

• Poster
  Breiteig, Trygve; Hundeland, Per Sigurd; Lorentzen, Svein; Måsøval, Heidi Strømskag; Sandvold, Karl Erik. (2007) Veien videre Paneldiskusjon. Norges forskningsråd Bedre matematikkundervisning: Kan FoU hjelpe? , Oslo 2007-10-17 - 2007-10-17
• Academic lecture
  Måsøval, Heidi Strømskag. (2007) Research on student teachers' generalisation processes in algebra: A theoretical perspective. Mathematics Education Centre Seminar , Loughborough University 2007-11-05 -
• Academic lecture
  Måsøval, Heidi Strømskag. (2007) Fra problemstilling knyttet til læring og undervisning av algebra til valg av metodisk tilnærming. NTNU (Norges teknisk-naturvitenskapelige universitet), PLU Seminar , Høgskolen i Sør-Trøndelag, Trondheim 2007-08-21 - 2007-08-22

2006

• Academic lecture
  Måsøval, Heidi Strømskag. (2006) Using theory in analysis of data from the mathematics classroom. Universitetet i Agder KUL Matematikk: Læringsfellesskap og IKT i læring , Kristiansand 2006-09-05 - 2006-09-07
• Academic lecture
  Måsøval, Heidi Strømskag; Rønning, Frode. (2006) Utvikling av faglig profesjonalitet - i spenningsfeltet mellom matematisk kunnskap og elevers utforsking. Nasjonalt nettverk for kvalitetsvurdering Fra skoleport til klasserom , Trondheim 2006-03-29 - 2006-03-30
• Poster
  Måsøval, Heidi Strømskag; Rønning, Frode. (2006) Ways in which mathematics is necessary for developing didactical knowledge in mathematics. NTNU What is the specific role of mathematics in mathematics education research? , Trondheim 2006-11-09 -

2005

• Academic lecture
  Goodchild, Simon; Jaworski, Barbara; Måsøval, Heidi Strømskag. (2005) Learning from students´ talk in mathematics classroom: Workshop on classroom research. HiST, NTNU NORMA 05: Fourth Nordic Conference on Mathematics Education , Trondheim 2005-09-02 - 2005-09-06
• Academic lecture
  Måsøval, Heidi Strømskag. (2005) When students see the target as 'doing' more than 'knowing'. HiST, NTNU NORMA 05: Fourth Nordic Conference on Mathematics Education , Trondheim 2005-09-02 - 2005-09-06

2004

• Academic lecture
  Måsøval, Heidi Strømskag. (2004) Student authority in mathematics classroom discourse. Høgskolen i Bergen The 28th Conference of the International Group for the Psychology of Mathematics Education , Bergen 2004-07-14 - 2004-07-18

2003

• Poster
  Måsøval, Heidi Strømskag. (2003) Forsøk med ny studiemodell for allmennlærerutdanning med vekt på realfag. Midt-Norsk Nettverks FOU-dag , Trondheim 2003-02-14 - 2003-02-14
• Academic lecture
  Måsøval, Heidi Strømskag. (2003) Uterommet som læringsarena: Verksted. Det generelle i det spesielle - problemer i spenningsfeltet mellom det konkrete og det abstrakte i matematikken , Bø i Telemark 2003-09-22 - 2003-09-25
• Academic lecture
  Jenssen, Annepetra; Måsøval, Heidi Strømskag. (2003) Tverrfaglig uteskole med vekt på kroppsøving og matematikk -`Utfordringer til hode og kropp´: Parallellsesjon. Barn og ungdom ut i naturen: Nordisk idrettslærerkongress , Oppdal 2003-06-23 - 2003-06-27

2001

• Poster
  Måsøval, Heidi Strømskag; Rønning, Frode. (2001) An inductive approach to conceptual development in the area of functions. Högskolan Kristianstad Conceptions of mathematics , Kristianstad 2001-06-08 - 2001-06-12
• Poster
  Måsøval, Heidi Strømskag; Rønning, Frode. (2001) Matematikk og kunst - kommunikasjon og komposisjon: Verksted. Mangfold i matematikken: LAMIS' sommerkurs , Kristiansand 2001-08-07 - 2001-08-10

2000

• Poster
  Botten, Geir; Måsøval, Heidi Strømskag. (2000) Matematiske skattejakter: Verksted. Matematik 2000 – Fokus i teorier og praksis , Borgarfjörður 2000-06-22 - 2000-06-26
• Poster
  Måsøval, Heidi Strømskag; Rønning, Frode. (2000) Semiregulære og aperiodiske tesselleringer. HiST Geometri - mer enn passer, linjal og blyant , Røros 2000-09-25 - 2000-09-28