Tinne Hoff Kjeldsen

Tinne Hoff Kjeldsen

Professor, Deputy Head of Department, Professor

Member of:

  • Didactics of Mathematics

ORCID: 0000-0002-2426-1622

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  1. Published

    Topic Study Group 25: The role of history of mathematics in mathematics education

    Tzanakis, C., Wang, X., Clark, K., Kjeldsen, Tinne Hoff & Schorcht, S., 2017, Proceedings of the 13th International Congress on Mathematical Education: ICME-13. Kaiser, G. (ed.). Springer, p. 491-495 (ICME-13 Monographs).

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research

  2. Egg-forms and Measure Bodies: Different Mathematical Practices in the Early History of the Development of the Modern Theory of Convexity

    Kjeldsen, Tinne Hoff, 2009, In: Science in Context. 22, 1, p. 85-113 24 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. Matilde: Kvinder og matematik

    Kjeldsen, Tinne Hoff, 2001

    Research output: Book/Report › Book › Research

  4. From ‚mixed’ to ‚applied’ mathematics: Tracing an important dimension of mathematics and its history

    Kjeldsen, Tinne Hoff, Epple, M. & Siegmund-Schultze, R., 2013, In: Oberwolfach Reports. 10, 1, p. 657–733

    Research output: Contribution to journal › Conference article › Research

  5. Different motivations and goals in the historical development of the theory of systems of linear inequalities

    Kjeldsen, Tinne Hoff, 2002, In: Archive for History of Exact Sciences. 56, p. 469-438

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. A history of the minimax theorem: von Neumann's conception of the minimax theorem. a journey through different mathematical contexts

    Kjeldsen, Tinne Hoff, 2000, Roskilde Universitet. 44 p.

    Research output: Book/Report › Report › Research

  7. Operations Research and Mathematical Programming: From War to Academia - A Joint Venture

    Kjeldsen, Tinne Hoff, 2008, History of Mathematics in Encyclopedia of Life Support Systems (EOLSS). Lundsgaard Hansen, V. & Gray, J. (eds.). Oxford ,UK, [http://www.eolss.net]: Eolss Publishers, 20 p.

    Research output: Chapter in Book/Report/Conference proceeding › Encyclopedia chapter › Research

  8. The use of Theory in Teachers' Modelling Projects – Experiences from an In-sevice Course

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2013, In: Proceedings of the Congress of the European Society for Research in Mathematics Education. 8, p. 990-999 10 p.

    Research output: Contribution to journal › Conference article › Research › peer-review

  9. New mathematical disciplines and research in the wake of World War II

    Kjeldsen, Tinne Hoff, 2003, Mathematics and war. Booss-Bavnbek, B. & Høyrup, J. (eds.). Basel / Boston / Berlin: Birkhäuser Verlag, p. 126-152

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  10. History and the Learning of Mathematics: Detecting student's meta-discursive rules

    Kjeldsen, Tinne Hoff & Petersen, P. H., 2012, Proceedings of ICME 12: The 12th International Congress on Mathematical Education. 10 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  11. Geometriens Historie

    Kjeldsen, Tinne Hoff, 1989, Teori og Redskab 2: Geometri og specielle funktioner. Jensen, S. & Sørensen, K. (eds.). København: Christian Ejlers, Vol. 2. p. 9-25

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Education

  12. BASE - et kursus i matematisk modellering på den naturvidenskabelige basisuddannelse ved RUC

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2008, In: Matilde. 34, p. 35-39

    Research output: Contribution to journal › Journal article › Communication

  13. Traces and Emergence of Nonlinear Programming

    Kjeldsen, Tinne Hoff (ed.) & Giorgi, G. (ed.), 2014, Basel: Birkhäuser Verlag.

    Research output: Book/Report › Anthology › Research › peer-review

  14. Integrating history and philosophy in mathematics education at university level through problem-oriented project work

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2009, In: ZDM - International Journal on Mathematics Education. 41, 1-2, p. 87-103

    Research output: Contribution to journal › Journal article › Research › peer-review

  15. Ideer til problemorienterede projekter af historisk og filosofisk karakter: Problemorienteret projektarbejde i, om og med matematik i gymnasiet - et kursus for gymnasielærere

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2004, Roskilde: Roskilde Universitet. 79 p.

    Research output: Book/Report › Compendium/lecture notes › Education

  16. Published

    Review : Christopher J. Phillips. The New Math: A Political History. 233 pp., figs., bibl., index. - Chicago/London: University of Chicago Press, 2015

    Kjeldsen, Tinne Hoff, 2016, In: Isis. 107, 2, p. 445-446

    Research output: Contribution to journal › Literature review › Communication

  17. Using History as a Means for the Learning of Mathematics without Losing Sight of History: The Case of Differential Equations

    Kjeldsen, Tinne Hoff, 2010, CERME 6, Proceedings of the sixth Congress of the European Society for Research in Mathematics Education. Durand-Guerrier, V., Soury-Lavergne, S. & Arzarello, F. (eds.). Institut National de Recherche Pedagogique, p. 2742-2751 10 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  18. Udviklingen af trigonometrien og logaritmefunktionerne

    Kjeldsen, Tinne Hoff, 1989, Teori og Redskab 2: Geometri og specielle funktioner. Jensen, S. & Sørensen, K. (eds.). København: Christian Ejlers, Vol. 2. p. 219-225

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Education

  19. Teaching With and About the Nature of Mathematics through History of Mathematics: Enacting Inquiry Learning in Mathematics

    Kjeldsen, Tinne Hoff, 2014, In: Education Sciences. Special issue, p. 38-55 18 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. BASE - et grundkursus i matematisk modellering. 1. Del

    Kjeldsen, Tinne Hoff, Blomhøj, M. & Ottesen, J. T., 2004, Roskilde: Roskilde Universitet. 230 p.

    Research output: Book/Report › Compendium/lecture notes › Education

  21. The significance of different scientific practises and cultures for the function and status of mathematical modelling in other sciences

    Kjeldsen, Tinne Hoff, 2011.

    Research output: Contribution to conference › Conference abstract for conference › Research › peer-review

  22. The Emergence of Nonlinear Programming: The Significance of OR

    Kjeldsen, Tinne Hoff, 2005.

    Research output: Contribution to conference › Conference abstract for conference › Research

  23. En kontekstualiseret matematikhistorisk analyse af ikke-lineær programmering: udviklingshistorie og multipel opdagelse

    Kjeldsen, Tinne Hoff, 1999, Roskilde Universitet.

    Research output: Book/Report › Ph.D. thesis › Research

  24. Students’ Reflections in Mathematical Modelling Projects

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2011, Trends in Teaching and Learning of Mathematical Modelling. Kaiser, G., Blum, W., Borromeo Ferri, R. & Stillman, G. (eds.). Springer, p. 385-396 12 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  25. Published

    An early Debate in Mathematical Biology and Its Value for Teaching: Rashevsky's 1934 Paper on Cell Division

    Kjeldsen, Tinne Hoff, 2017, In: The Mathematical Intelligencer. 39, 2, p. 36-45

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. Asking and Answering Questions in and about the History of Mathematics: Part II: Mini course on History of Analysis. Kompendium

    Kjeldsen, Tinne Hoff (ed.) & Sørensen, H. K. (ed.), 2012, Aarhus Universitet. 238 p.

    Research output: Book/Report › Compendium/lecture notes › Education

  27. Anmeldelse af Matematiske Horisonter

    Kjeldsen, Tinne Hoff, 2010, In: MONA: Matematik og Naturfagsdidaktik. 2, p. 92-98 7 p.

    Research output: Contribution to journal › Literature review › Communication

  28. Case Analysis of some Critical Factors in Relation to Learning Outcomes of PPL: The Formation of Flint

    Kjeldsen, Tinne Hoff & Andersen, A. S., 2015, The Roskilde Model. Andersen, A. S. & Heilesen, S. B. (eds.). Springer VS, p. 37-45 9 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  29. BASE - et grundkursus i matematisk modellering I

    Kjeldsen, Tinne Hoff, Ottesen, J. T. & Blomhøj, M., 2005, Roskilde: Roskilde Universitet.

    Research output: Book/Report › Book › Education

  30. Fenchels konjugerede konvekse funktioner og deres anvendelse i konveks programmering: Fenchels dualitetssætning

    Kjeldsen, Tinne Hoff, 2003, In: Matilde. 15, p. 14-17

    Research output: Contribution to journal › Journal article › Research › peer-review

  31. Two episodes in late 19th century research on convex bodies: Style and towards a discipline

    Kjeldsen, Tinne Hoff, 2010, In: Oberwolfach Reports. 7, 1, p. 581-665 3 p.

    Research output: Contribution to journal › Conference article › Research › peer-review

  32. Mathematics in the Physical Sciences, 1650-2000:  Introduction

    Kjeldsen, Tinne Hoff, 2006, Oberwolfachreport. Zürich: European Mathematical Society Publishing House, Vol. Volume 2, Issue 4. p. 3175-3246 71 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  33. Integralregningens Historie

    Kjeldsen, Tinne Hoff, 1991, Teori og Redskab 6: Integralregning og differentialligninger. Jensen, S. & Sørensen, K. (eds.). København: Christian Ejlers, Vol. 6. p. 113-138

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Education

  34. A Historical View of Nonlinear Programming: Traces and Emergence

    Kjeldsen, Tinne Hoff & Giorgi, G., 2014, Traces and Emergence of Nonlinear Programming. Giorgi, G. & Hoff Kjeldsen, T. (eds.). Basel: Birkhäuser Verlag, p. 1-43

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  35. BASE - et grundkursus i matematisk modellering. 2. Del

    Kjeldsen, Tinne Hoff, Blomhøj, M. & Ottesen, J. T., 2004, Roskilde: Roskilde Universitet. 154 p.

    Research output: Book/Report › Compendium/lecture notes › Education

  36. Published

    Findes der skønhed i leksikografi?

    Kjeldsen, Tinne Hoff, Pálfi, L. & Wolgast, K., 2018, In: Fund og Forskning i Det Kongelige Biblioteks Samlinger. 57, p. 221-239 19 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. Uses of History in Mathematics Education: Development of Learning Strategies and Historical Awareness

    Kjeldsen, Tinne Hoff, 2011, CERME 7, Proceedings of the seventh Congress of the European Society for Research in Mathematics Education. Pytlak, M., Swoboda, E. & Rowland, T. (eds.). p. 1700-1709

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  38. BASE - et grundkursus i matematisk modellering II

    Kjeldsen, Tinne Hoff, Ottesen, J. T. & Blomhøj, M., 2005, Roskilde: Roskilde Universitet.

    Research output: Book/Report › Book › Education

  39. The origin of nonlinear programming

    Kjeldsen, Tinne Hoff, 2000, Proceedings of the Canadian Society for History and Philosophy of mathematics: 25th annual meeting 1999. Tattersall, J. J. (ed.). Toronto, Ontario: University of Toronto Press, p. 219-237

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  40. Published

    Mathematics as a tool-driven practice: the use of material and conceptual artefacts in mathematics

    Kjeldsen, Tinne Hoff & Johansen, Mikkel Willum, 2015, History and Epistemology in Mathematics Education Proceedings of the Seventh European Summer University ESU 7. Barbin, E., Jankvist, U. T. & Kjeldsen, T. H. (eds.). Danish School of Education, p. 79-95

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  41. Students’ mathematical learning in modelling activities

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2013, International Perspectives on the Teaching and Learning of Mathematical Modelling. Stillman, G., Kaiser, G., Blum, W. & Brown, J. (eds.). New York: Springer Publishing Company, p. 141-151 11 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  42. Published

    New Medias – New Ways: Students’ learning in a calculus course through publication of own mathematical products

    Kjeldsen, Tinne Hoff, 2016, Teaching for Active Learning TAL2015: Proceedings fra Konferencen TAL2015 på Syddansk Universitet, 2015. Troelsen, R. (ed.). Syddansk Universitet, p. 14-19

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Communication

  43. Kvinder og matematik - Netværk og myter

    Kjeldsen, Tinne Hoff, 2001, In: Matilde. p. 2 1 p.

    Research output: Contribution to journal › Journal article › Research

  44. New Avenues for History in Mathematics Education: Mathematical Competencies and Anchoring

    Kjeldsen, Tinne Hoff & Jankvist, U. T., 2011, In: Science & Education. 20, 9, p. 831-862

    Research output: Contribution to journal › Journal article › Research › peer-review

  45. History and Epistemology in Mathematics Education: Proceedings of the Seventh European Summer University

    Kjeldsen, Tinne Hoff (ed.), Jankvist, U. (ed.) & Barbin, E. (ed.), 2015, Danish School of Education, Aarhus University.

    Research output: Book/Report › Anthology › Research › peer-review

  46. Spilteori - et historisk essay

    Kjeldsen, Tinne Hoff, 1998, In: Netværk i Matematikkens Historie og Filosofi. Nyhedsbrev. 5, p. 2-9 8 p.

    Research output: Contribution to journal › Journal article › Research

  47. New Trends in the History and Philosophy of Mathematics

    Kjeldsen, Tinne Hoff (ed.), Pedersen, S. A. (ed.) & Sonne-Hansen, L. M. (ed.), 2004, Odense: Syddansk Universitetsforlag. 161 p.

    Research output: Book/Report › Anthology › Research

  48. BASE - et grundkursus i matematisk modellering. 1. del og 2. del.

    Kjeldsen, Tinne Hoff, Blomhøj, M. & Ottesen, J. T., 2006, Roskilde Universitetscenter: Roskilde Universitet.

    Research output: Book/Report › Compendium/lecture notes › Education

  49. Matematisk Billedbog

    Kjeldsen, Tinne Hoff & Tolnø, J., 1988, København: Københavns Universitet. 59 p.

    Research output: Book/Report › Book › Communication

  50. The growth of mathematical knowledge - introduction of convex bodies

    Kjeldsen, Tinne Hoff & Carter, J., 2012, In: Studies in History and Philosophy of Science Part A. 43, 2, p. 359-365

    Research output: Contribution to journal › Journal article › Research › peer-review

  51. History in a Competence Based Mathematics Education: a Means for the Learning of Differential Equations

    Kjeldsen, Tinne Hoff, 2011, Recent developments on introducing a historical dimension in mathematics education. Katz, V. & Tzanakis, C. (eds.). Mathematical Association of America, p. 165-173

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  52. Sandsynlighedsregningens Historie

    Kjeldsen, Tinne Hoff, 1989, Teori og Redskab - Tillæg: Statistik og Sandsynlighed. Jensen, S. & Sørensen, K. (eds.). København: Christian Ejlers, p. 27-47

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Education

  53. En ny-fortolkning af det moderne konveksitetsbegrebs opståen

    Kjeldsen, Tinne Hoff, 2006, Årsberetning, RUC, 2005.. Frederiksberg: Roskilde Universitetsforlag, p. 46-47 2 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  54. Does History have a Significant Role to Play for the Learning of Mathematics? Multiple perspective approach to history, and the learning of meta level rules of mathematical discourse

    Kjeldsen, Tinne Hoff, 2011, History and Epistemology in Mathematics Education: Proceedings of the 6th European Summer University.. Barbin, E., Kronfellner, M. & Tzanakis, C. (eds.). Wien: Verlag Holzhausen GmbH, p. 51-61 12 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  55. History of convexity and mathematical programming: connections and relationships in two episodes of research in pure and applied mathematics of the 20th century

    Kjeldsen, Tinne Hoff, 2010, Proceedings of the International Congress of Mathematicians 2010 - Invited lectures. Bhatia, R. (ed.). New Delhi: Hindustan Book Agency, Vol. 4. p. 3233-3257

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  56. Hvad er matematik?

    Kjeldsen, Tinne Hoff, 2013, Håndbog om matematik i grundskolen: Læring, undervisning og vejledning. Andersen, M. W. & Weng, P. (eds.). Dansk Psykologisk Forlag, p. 12-24

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  57. Published

    A Problem-Oriented Multiple Perspective Way into History of Mathematics – What, Why and How Illustrated by Practice

    Kjeldsen, Tinne Hoff, 2023, The Richness of the History of Mathematics. Chemla, K., Ferreiròs, J., Ji, L., Scholz, E. & Wang, C. (eds.). Springer, p. 3-26 24 p. (Archimedes, Vol. 66).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  58. History in mathematics education - why bother? Interdisciplinarity, mathematical competence and the learning of mathematics

    Kjeldsen, Tinne Hoff, 2010, Interdisciplinarity for the 21st Century: Proceedings of the 3rd International Symposium on Mathematics and its Connections to Arts and Sciences. Sriraman, B. & Freiman, V. (eds.). Information Age Publishing, p. 17-48

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  59. HPM 2012 – The HPM Satellite Meeting of ICME 12: We were there

    Kjeldsen, Tinne Hoff & Barbin, E., 2012, In: HPM Newsletter. 81, p. 1-3

    Research output: Contribution to journal › Literature review › Communication

  60. Published

    Interactions Between Mathematics and Physics: The History of the Concept of Function—Teaching with and About Nature of Mathematics

    Kjeldsen, Tinne Hoff & Lützen, Jesper, 2015, In: Science & Education. 24, 5, p. 543-559

    Research output: Contribution to journal › Journal article › Research › peer-review

  61. Hvad er matematik?

    Kjeldsen, Tinne Hoff, 2021, Håndbog om matematik i grundskolen: Læring, undervisning og vejledning. Andersen, M. W. & Weng, P. (eds.). 2 ed. Dansk Psykologisk Forlag, p. 12-24

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Communication

  62. BASE - et grundkursus i matematisk modellering: Problemstillinger til miniprojekter

    Kjeldsen, Tinne Hoff, Blomhøj, M. & Ottesen, J. T., 2004, Roskilde: Roskilde Universitet. 92 p.

    Research output: Book/Report › Compendium/lecture notes › Education

  63. Mathematical modelling as goal in mathematics education - developing of modelling competency through project work

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2010, The First Sourcebook on Nordic Research in Mathematics Education. Sriraman, B., Haapasalo, L., Søndergaard, B. D., Palsdottir, G., Goodchild, S. & Bergsten, C. (eds.). Information Age Publishing, p. 555-568 19 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  64. Published

    Developing historical awareness through the use of primary sources in the teaching and learning of mathematics

    Kjeldsen, Tinne Hoff, Clark, K. M. & Jankvist, U. T., 2022, Mathematics and its Connections to the Arts and Sciences (MACAS): 15 Years of Interdisciplinary Mathematics Education. Michelsen, C., Beckmann, A., Freiman, V., Jankvist, U. T. & Savard, A. (eds.). Cham: Springer, p. 45-68 24 p. (Mathematics Education in the Digital Era MEDE, Vol. 19).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  65. Published

    Students' video tutorials as a means for supporting and analysing their reflections on the limit concept

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2017, Proceedings of the Tenth Congress of the European Society for Research in Mathematics Education (CERME10, February 1-5, 2017). Dublin, Ireland. Dooley, T. & Gueudet, G. (eds.). Dublin, Irland: DCU Institute of Education and ERME, p. 3833-3840

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  66. Project organised science studies at university level: exemplarity and interdisciplinarity

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2009, In: ZDM - International Journal on Mathematics Education. 41, 1-2, p. 183-198

    Research output: Contribution to journal › Journal article › Research › peer-review

  67. The historical background of nonlinear programming

    Kjeldsen, Tinne Hoff, 1997, Selected topics in mathematics: proceedings of the first Nordic summer school for female Ph.d. students of mathematics. Klisinska, A. & Persson, L-E. (eds.). Luleå, Sweden: Luleå tekniska universitet, p. 63-67

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  68. Learning the integral concept through mathematical modellling

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2007, European Research in Mathematics: Proceedings of the Fifth Congress of the European Society for Research in Mathematics Education. Pitta-Pantazi, D. & Philippou, G. (eds.). University of Cyprus, p. 2070-2079 10 p.

    Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

  69. Published

    Nicolas Rashevsky and Alfred Lotka: Different modelling strategies in the beginning of mathematical biology in the early 20th century

    Kjeldsen, Tinne Hoff & Loetggers, A., 2016, In: Oberwolfach Reports. 12, 4, p. 2779-2783

    Research output: Contribution to journal › Conference article › Research

  70. Hvad er matematik?

    Kjeldsen, Tinne Hoff, 2011, Akademisk Forlag. 208 p.

    Research output: Book/Report › Book › Communication

  71. Landmåling og korttegning

    Kjeldsen, Tinne Hoff, 2005, Gyldendals Gymnasiematematik: B1 - Grundbog. Clausen, F., Schomacker, G. & Tolnø, J. (eds.). København: Gyldendal, p. 40-46 7 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Education

  72. BASE - et grundkursus i matematisk modellering: Problemstillinger til miniprojekter

    Kjeldsen, Tinne Hoff, Ottesen, J. T. & Blomhøj, M., 2005, Roskilde: Roskilde Universitet.

    Research output: Book/Report › Book › Education

  73. Momentproblemets udvikling fra Stieltjes til Marcel Riesz

    Kjeldsen, Tinne Hoff, 1988, København: Københavns Universitet. 127 p.

    Research output: Book/Report › Report › Research

  74. The emergence of nonlinear programming: interactions between practical mathematics and mathematics proper

    Kjeldsen, Tinne Hoff, 2000, In: Mathematical Intelligencer. 22, 3, p. 50-54

    Research output: Contribution to journal › Journal article › Research › peer-review

  75. Taxicab Geometry

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2014, Mathematics Lessons Learned from Across the World: Prekindergarten - Grade 8. Lott, J. W. & Lott, C. J. (eds.). Reston: National Council of Teachers of Mathematics, p. 91-99

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  76. Introduction

    Kjeldsen, Tinne Hoff & Pedersen, S. A., 2004, New Trends in the History and Philosophy of Mathematics. Kjeldsen, T. H., Pedersen, S. A. & Sonne-Hansen, L. M. (eds.). Odense: Syddansk Universitetsforlag, p. 11-28

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  77. Published

    Integrating History and Epistemology of Mathematics in Mathematics Education

    Kjeldsen, Tinne Hoff, Clark, K., Schorcht, S. & Tzanakis, C., 2018, Mathematics, Education and History: Towards a Harmonius Partnership. Kjeldsen, T. H., Clark, K. M., Schorcht, S. & Tzanakis, C. (eds.). Springer, p. 1-23 23 p. (ICME-13 Monographs).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  78. BASE - note 1 og note 2

    Kjeldsen, Tinne Hoff, 2000, Roskilde: Roskilde Universitet.

    Research output: Book/Report › Compendium/lecture notes › Education

  79. Samspil mellem udvikling af praksis og matematikdidaktisk forskning – støtte til tilegnelse af integralbegrebet gennem modellering

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2011, Viden om lærere - lærerviden. Andresen, M. (ed.). København: Navimat, p. 112-146

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  80. The Kuhn-Tucker theorem in nonlinear programming: a multiple discovery?

    Kjeldsen, Tinne Hoff, 1999, Roskilde Universitet.

    Research output: Book/Report › Book › Research

  81. Published

    Rook Review: Taming the Unknown: A History of Algebra from Antiquity to the Early Twentieth Century / Victor J. Katz and Karen Hunger Parshall. Princeton/Oxford (Princeton University Press). 2014. 485pp., figs., bibl., index

    Kjeldsen, Tinne Hoff, 2017, In: Historia Mathematica. 44, 1, 70 p.

    Research output: Contribution to journal › Literature review › Research

  82. The emergence of the concept of a convex body in the work of Herman Minkowski

    Kjeldsen, Tinne Hoff, 2008, In: Oberwolfach Reports. 2, p. 1340-1342 3 p.

    Research output: Contribution to journal › Conference article › Research › peer-review

  83. Kompendium - Seminar i matematikhistorie: geometri i matematikhistorisk belysning

    Kjeldsen, Tinne Hoff, 2000, Roskilde: Roskilde Universitet.

    Research output: Book/Report › Compendium/lecture notes › Education

  84. Accepted/In press

    From duality in mathematical programming to Fenchel duality and convex analysis: Duality as a force of inspiration in the creation of new mathematics

    Kjeldsen, Tinne Hoff, 2024, (Accepted/In press) Preliminary title: Duality, an archetype of mathematical thinking. Krömer, R., Haffner, E. & Volkert, K. (eds.). Birkhäuser Verlag, 27 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  85. Published

    A Multiple Perspective Approach to History of Mathematics: Mathematical Programming and Rashevsky's Early Development of Mathematical Biology in the Twentieth Century.

    Kjeldsen, Tinne Hoff, 2019, Interfaces between Mathematical Practices and Mathematical Education. Schubring, G. (ed.). Springer, p. 143-167 25 p. (International Studies in the History of Mathematics and its Teaching).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  86. Published

    Creating inquiry-reflective learning environments in mathematics through history and original sources

    Kjeldsen, Tinne Hoff, 2018, Circulation: mathématiques, historie, enseignement. Auvinet, J., Moussard, G. & Saint Raymond, X. (eds.). PULIM Presses universitaires de Limoges, p. 13-29 17 p. (Savoirs scientifiques & Pratiques d'enseignement).

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  87. Asking and Answering Questions in and about the History of Mathematics: Part III: Mini course on History of Algebra. Kompendium

    Kjeldsen, Tinne Hoff (ed.) & Sørensen, H. K. (ed.), 2012, Aarhus Universitet.

    Research output: Book/Report › Compendium/lecture notes › Education

  88. Analysing the functions of mathematical modelling in science as a basis for developing modelling competency in science education

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2009, ICTMA 14: Abstracts. p. 19 1 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  89. From measuring tool to geometrical object: Minkowski's development of the concept of convex bodies

    Kjeldsen, Tinne Hoff, 2008, In: Archive for History of Exact Sciences. 62, 1, p. 59-89 31 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  90. Talbegrebets oprindelse

    Kjeldsen, Tinne Hoff, 1988, Teori og Redskab 1: Tal og funktioner. Jensen, S. & Sørensen, K. (eds.). København: Christian Ejlers, Vol. 1. p. 9-21

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Education

  91. Abstraction and application: new contexts, new interpretations in twentieth-century mathematics

    Kjeldsen, Tinne Hoff, 2009, The Oxford Handbook of the History of Mathematics. Robson, E. & Stedall, J. (eds.). New York: Oxford University Press, p. 755-778 24 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  92. Learning mathematics through modelling - the case of the integral concept

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2010, The First Sourcebook on Nordic Research in Mathematics Education. Sriraman, B., Haapasalo, L., Søndergaard, B. D., Palsdottir, G. & Goodchild, S. (eds.). Information Age Publishing, p. 569-582

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  93. The Significance of Modelling in Economics for the Development of Mathematics

    Kjeldsen, Tinne Hoff, 2007. 28 p.

    Research output: Contribution to conference › Paper › Research › peer-review

  94. John von Neumann's conception of the minimax theorem: a journey through different mathematical contexts

    Kjeldsen, Tinne Hoff, 2001, In: Archive for History of Exact Sciences. 56, p. 39-68

    Research output: Contribution to journal › Journal article › Research › peer-review

  95. The development of nonlinear programming in post war USA : origin, motivation, and expansion

    Kjeldsen, Tinne Hoff, 2006, The Way Through Science and Philosophy: Essays in Honour of Stig Andur Pedersen. Andersen, H. B., Christianssen, F. V., Jørgensen, K. F. & Hendricks, V. F. (eds.). London: College Publications, p. 31-50

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  96. The Decay of Alcohol and THC in the Human Body

    Kjeldsen, Tinne Hoff & Blomhøj, M., 2015, Mathematical Lessons Learned from Across the World, Grades 7-12. Lott, J. W. & Lott, C. J. (eds.). National Council of Teachers of Mathematics, p. 107-112 6 p.

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research › peer-review

  97. Tucker, Albert William

    Kjeldsen, Tinne Hoff, 2007, New Dictionary of Scientific Biography. Koertge, N. (ed.). Detroit: Charles Scribner’s Sons, Vol. 7.

    Research output: Chapter in Book/Report/Conference proceeding › Encyclopedia chapter › Research

  98. Modelling: from Theory to Practice

    Kjeldsen, Tinne Hoff, Jessen, B. E. & Winsløw, C., 2015, (Accepted/In press) In: Proceedings of the Congress of the European Society for Research in Mathematics Education. 9, 10 p.

    Research output: Contribution to journal › Conference article › Research › peer-review

  99. Ligningernes Historie

    Kjeldsen, Tinne Hoff, 1989, Teori og Redskab 2: Geometri og specielle funktioner. Jensen, S. & Sørensen, K. (eds.). København: Christian Ejlers, Vol. 2. p. 205-217

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Education

  100. Published

    Mini-workshop:VWomen in Mathematics: Historical and Modern Perspectives

    Kjeldsen, Tinne Hoff, Oswald, N. & Tobies, R., 2017, In: Oberwolfach Reports. 14, 1, p. 83-85

    Research output: Contribution to journal › Conference article › Research

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