About the Authors

Frank Reinhold

Roles Conceptualization, Data curation, Formal analysis, Investigation, Methodology, Resources, Validation, Visualization, Writing – original draft, Writing – review & editing

frank.reinhold@tum.de

Affiliations Heinz Nixdorf-Chair of Mathematics Education, TUM School of Education, Technical University of Munich, Munich, Germany, Institute for Mathematics Education (IMBF), Freiburg University of Education, Freiburg, Germany

Sarah Isabelle Hofer

Roles Formal analysis, Validation, Writing – original draft, Writing – review & editing

Affiliation Chair of Education and Educational Psychology, Faculty of Psychology and Educational Sciences, University of Munich (LMU), Munich, Germany

Stefan Hoch

Roles Conceptualization, Formal analysis, Investigation, Resources, Software, Validation, Writing – review & editing

Affiliation Heinz Nixdorf-Chair of Mathematics Education, TUM School of Education, Technical University of Munich, Munich, Germany

Bernhard Werner

Roles Conceptualization, Investigation, Resources, Software, Writing – review & editing

Affiliation Chair for Geometry and Visualization, Department of Mathematics, Technical University of Munich, Munich, Germany

Jürgen Richter-Gebert

Roles Conceptualization, Investigation, Project administration, Software, Supervision, Writing – review & editing

Affiliation Chair for Geometry and Visualization, Department of Mathematics, Technical University of Munich, Munich, Germany

Kristina Reiss

Roles Conceptualization, Funding acquisition, Investigation, Project administration, Supervision, Writing – review & editing

Affiliation Heinz Nixdorf-Chair of Mathematics Education, TUM School of Education, Technical University of Munich, Munich, Germany

Competing Interests

The authors have declared that no competing interests exist.