Wessel, Lena, S. Prediger, A. Stein, M. Wijers, and V. Jonker. Language for Mathematics in Vocational Contexts. Handbook for Teachers and Facilitators. Dortmund/Arnsberg: DZLM, 2020.

Biehler, Rolf, and Viviane Durand-Guerrier. “University Mathematics Didactic Research on Number Theory, Algebra, Discrete Mathematics, Logic.” In Proceedings of the Third Conference of the International Network for Didactic Research in University Mathematics (INDRUM 2020, 12-19 September 2020), edited by T. Hausberger, M. Bosch, and F. Chelloughi. Bizerte, Tunisia: University of Carthage and INDRUM, 2020.

Lünne, Steffen, Susanne Schnell, and Rolf Biehler. “Motivation of Out-of-Field Teachers for Participating in Professional Development Courses in Mathematics.”https://doi.org/10.1080/02619768.2020.1793950__European Journal of Teacher Education 44, no. 5 (2020): 688–705.https://doi.org/10.1080/02619768.2020.1793950 .

Barzel, Bärbel, and Rolf Biehler. “Theory-Based Design of Professional Development for Upper Secondary Teachers–Focusing on the Content-Specific Use of Digital Tools.” In Professional Development and Knowledge of Mathematics Teachers, edited by Stefan Zehetmeier, Despina Potari, and Miguel Ribeiro, 163–192. London: Routledge, 2020.

Feudel, Frank, and Rolf Biehler. “Students’ Understanding of the Derivative Concept in the Context of Mathematics for Economics.”https://doi.org/10.1007/s13138-020-00174-z__Journal Für Mathematik-Didaktik 42, no. 1 (2020): 273–305.https://doi.org/10.1007/s13138-020-00174-z .

Kempen, Leander, and Rolf Biehler. “Using Figurate Numbers in Elementary Number Theory – Discussing a ‘Useful’ Heuristic From the Perspectives of Semiotics and Cognitive Psychology.”https://doi.org/10.3389/fpsyg.2020.01180__Frontiers in Psychology 11 (2020): 1180.https://doi.org/10.3389/fpsyg.2020.01180 .

Kempen, Leander, Sandra Krämer, and Rolf Biehler. “Was verstehen Schülerinnen und Schüler unter eBeweis“? 3 ausgewählte Ergebnisse einer Pilotstudie.”https://doi.org/10.17877/DE290R-21418__In Beiträge zum Mathematikunterricht 2020, edited by H.-S. Siller, W. Weigel, and J. F. Wörler, 489392. Münster: WTM-Verlag, 2020.https://doi.org/10.17877/DE290R-21418 .

Biehler, Rolf, Leander Kempen, and Walther Paravicini. “Hochschuldidaktik Mathematik: Fachbezogenes Design und empirische Studien.”https://doi.org/10.17877/DE290R-21487__In Beiträge zum Mathematikunterricht 2020, edited by H.-S. Siller, W. Weigel, and J. F. Wörler, 1347–48. Münster: WTM-Verlag, 2020.https://doi.org/10.17877/DE290R-21487 .

Fleischer, Yannik, and Rolf Biehler. “Automatisierte Entscheidungsverfahren als Thema im allgemeinbildenden Mathematikunterricht.”https://doi.org/10.17877/DE290R-21301__In Beiträge zum Mathematikunterricht 2020, edited by H.-S. Siller, W. Weigel, and J. F. Wörler. Münster: WTM-Verlag, 2020.https://doi.org/10.17877/DE290R-21301 .

Griese, Birgit, Ralf Nieszporek, and Rolf Biehler. “Frei verfügbare Materialien für Unterricht und Fortbildung: Stochastik verständnisorientiert unterrichten.” Stochastik in der Schule 40, no. 1 (2020): 10–17.

Lünne, Steffen, Susanne Schnell, and Rolf Biehler. “Ffunt@OWL – Konzept und Gestaltungsprinzipien zur Qualifizierung fachfremd Mathematik unterrichtender Lehrkräfte der Sekundarstufe I.”https://doi.org/10.1007/978-3-658-27293-7_6__In Professionelles Handeln im fachfremd erteilten Mathematikunterricht, edited by R. Porsch and B. Rösken-Winter, 141–67. Wiesbaden: Springer Spektrum, 2020.https://doi.org/10.1007/978-3-658-27293-7_6 .

Lankeit, Elisa, and Rolf Biehler. “‘I Only Know the Absolute Value Function’–About Students’ Concept Images and Example Spaces Concerning Continuity and Differentiability.” In Proceedings of the Third Conference of the International Network for Didactic Research in University Mathematics (INDRUM 2020, 12-19 September 2020), edited by T. Hausberger, M. Bosch, and F. Chelloughi. Bizerte, Tunisia: University of Carthage and INDRUM, 2020.

Kempen, Leander, Sandra Krämer, and Rolf Biehler. “Investigating High School Graduates’ Personal Meaning of the Notion of ‘Mathematical Proof.’” In Proceedings of the Third Conference of the International Network for Didactic Research in University Mathematics (INDRUM 2020, 12-19 September 2020), edited by T. Hausberger, M. Bosch, and F. Chelloughi, 358–67. Bizerte, Tunisia: University of Carthage and INDRUM, 2020.

Lankeit, Elisa, T. Bauer, and Rolf Biehler. “Votingfragen in den Übungen zur Analysis – Wirkung verschiedener Einsatzszenarien.”https://doi.org/10.17877/DE290R-21396__In Beiträge zum Mathematikunterricht 2020, edited by H.-S. Siller, W. Weigel, and J. F. Wörler, 1361–64. Münster: WTM-Verlag, 2020.https://doi.org/10.17877/DE290R-21396 .

Schürmann, Mirko, Lara Gildehaus, Michael Liebendörfer, Niclas Schaper, Rolf Biehler, Reinhard Hochmuth, Christiane Kuklinski, and Elisa Lankeit. “Mathematics Learning Support Centres in Germany—an Overview.”https://doi.org/10.1093/teamat/hraa007__Teaching Mathematics and Its Applications: An International Journal of the IMA 40, no. 2 (2020): 99–113.https://doi.org/10.1093/teamat/hraa007 .

Liebendörfer, Michael, Robin Göller, Lara Gildehaus, Jörg Kortemeyer, Rolf Biehler, Reinhard Hochmuth, Laura Ostsieker, Jana Rode, and Niclas Schaper. “The Role of Learning Strategies for Performance in Mathematics Courses for Engineers.” In Proceedings of the Third Conference of the International Network for Didactic Research in University Mathematics (INDRUM 2020, 12-19 September 2020), edited by T. Hausberger, M. Bosch, and F. Chelloughi. Bizerte, Tunisia: University of Carthage and INDRUM, 2020.

Biehler, Rolf, Michael Liebendörfer, Angela Schmitz, Yael Fleischmann, Sandra Krämer, Laura Ostsieker, and Sarah Schlüter. “studiVEMINTvideos – Mathematische Lernvideos zur Studienvorbereitung und Unterstützung im ersten Studienjahr.”https://doi.org/10.17877/DE290R-21234__In Beiträge zum Mathematikunterricht 2020, edited by H.-S. Siller, W. Weigel, and J. F. Wörler. Münster: WTM, 2020.https://doi.org/10.17877/DE290R-21234 .

Biehler, Rolf, Yannik Fleischer, Lea Budde, Daniel Frischemeier, Dietrich Gerstenberger, Susanne Podworny, and Carsten Schulte. “Data Science Education in Secondary Schools: Teaching and Learning Decision Trees with CODAP and Jupyter Notebooks as an Example of Integrating Machine Learning into Statistics Education.” In New Skills in the Changing World of Statistics Education Proceedings of the Roundtable Conference of the International Association for Statistical Education (IASE), edited by P. Arnold. Voorborg, The Netherlands: ISI/IASE, 2020.

Budde, Lea, Daniel Frischemeier, Rolf Biehler, Yannik Fleischer, Dietrich Gerstenberger, Susanne Podworny, and Carsten Schulte. “Data Science Education in Secondary School: How to Develop Statistical Reasoning When Exploring Data Using CODAP.” In New Skills in the Changing World of Statistics Education: Proceedings of the Roundtable Conference of the International Association for Statistical Education (IASE), July 2020, edited by P. Arnold. Voorborg, The Netherlands: ISI/IASE, 2020.

Beverungen, Daniel, Joos C. A. M. Buijs, Jörg Becker, Claudio Di Ciccio, Wil M. P. van der Aalst, Christian Bartelheimer, Jan vom Brocke, et al. “Seven Paradoxes of Business Process Management in a Hyper-Connected World.”https://doi.org/10.1007/s12599-020-00646-z__Business &; Information Systems Engineering 63 (2020): 145–56.https://doi.org/10.1007/s12599-020-00646-z .