@inbook{46956,
  author       = {{Hattermann, Mathias and Rezat, Sebastian and Sträßer, Rudolf}},
  booktitle    = {{Handbuch der Mathematikdidaktik}},
  isbn         = {{9783662666036}},
  pages        = {{201–242}},
  publisher    = {{Springer}},
  title        = {{{Geometrie: Leitidee Raum und Form}}},
  doi          = {{10.1007/978-3-662-66604-3_7}},
  year         = {{2023}},
}

@inbook{46955,
  author       = {{Hefendehl-Hebeker, Lisa and Rezat, Sebastian}},
  booktitle    = {{Handbuch der Mathematikdidaktik}},
  isbn         = {{9783662666036}},
  pages        = {{123–158}},
  publisher    = {{Springer}},
  title        = {{{Algebra: Leitidee Symbol und Formalisierung}}},
  doi          = {{10.1007/978-3-662-66604-3_5}},
  year         = {{2023}},
}

@inbook{48319,
  author       = {{Leiss, Dominik and Gerlach, Kerstin and Wessel, Lena and Schmidt-Thieme, Barbara}},
  booktitle    = {{Handbuch der Mathematikdidaktik}},
  isbn         = {{9783662666036}},
  pages        = {{561--595}},
  publisher    = {{Springer Berlin Heidelberg}},
  title        = {{{Sprache und Mathematiklernen}}},
  doi          = {{10.1007/978-3-662-66604-3_18}},
  year         = {{2023}},
}

@inbook{47416,
  author       = {{Biehler, Rolf and Engel, Joachim and Frischemeier, Daniel}},
  booktitle    = {{Handbuch der Mathematikdidaktik}},
  editor       = {{Bruder, Regina and Büchter, A. and Gasteiger, H. and Schmidt-Thieme, B. and Weigand, HG.}},
  isbn         = {{9783662666036}},
  publisher    = {{Springer}},
  title        = {{{Stochastik: Leitidee Daten und Zufall}}},
  doi          = {{10.1007/978-3-662-66604-3_8}},
  year         = {{2023}},
}