About me
| since 2011 | Professor for Mathematics Education, Ludwig-Maximilians-Universität München, Germany | 
| 2010-2011 | Professor for Mathematics Education, Leibniz Institute for Science and Mathematics Education, Kiel, Germany | 
| 2009-2010 | Researcher (Assistent), Heinz-Nixdorf Chair of Mathematics Education, TU München, Germany | 
| 2006-2009 | Researcher (Assistent), Chair of Mathematics Education, Ludwig-Maximilians-Universität München, Germany | 
| 2004-2006 | In-service teacher training for secondary school teachers (mathematics, physics) | 
| 2002-2004 | Dissertation Braided Hopf algebras of triangular type under the supervision of Prof. Dr. Hans-Jürgen Schneider | 
| 1996-2002 | Studies of mathematics, physics and education, Ludwig-Maximilians-Universität München Degrees: 
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Scientific functions and activities
- Learning and Instruction (Associate Editor 2019-2022, Editorial Board Member since 2023)
 - Member of the Advisory Committee of the Gesellschaft für Didaktik der Mathematik (GDM) seit 2022
 - Member of the Scientific Advisory Committee of the Journal für Mathematikdidaktik (JMD) since 2018
 - Member of the Scientific Board des Munich Center of the Learning Sciences (MCLS) seit 2011
 - Head of the Versammlung der Mathematikdidaktikerinnen und Mathematikdidaktiker an bayerischen Universitäten 2015-2021
 - Member of the International Committee (IC) of the International Group for the Psychology of Mathematics Education (IGPME) 2011-2015
 - Secretary of IGPME 2012-2013
 - Vice President of IGPME 2013-2015
 
Network
- Member of the International Group for the Psychology of Mathematics Education (PME)
 - Member of the German Association of Mathematicians (Deutschen Mathematiker-Vereinigung, DMV)
 - Member of the Association for Empirical Education Research (Gesellschaft für empirische Bildungsforschung, GEBF)
 - Member of the Group for Empirical Educational Research (Arbeitsgemeinschaft für Empirische Pädagogische Forschung, AEPF)
 - Member of the European Association for Research in Learning and Instruction (EARLI)
 - Member of the Munich Center of the Learning Sciences (MCLS)
 - Member of the Society of Didactics of Mathematics (Gesellschaft für Didaktik der Mathematik, GDM)