@article{Erath2023,
  author    = {Christoph Erath},
  title     = {Vorwort F\&E Edition 29, 2023 Spaß an Mathe! Ein Attraktiver Unterricht an der Schule},
  journal   = {F\&E Edition},
  number    = {29},
  pages     = {4 -- 7},
  year      = {2023},
}