@article{PeschelGiest2009,
  author    = {Peschel, Markus and Giest, Hartmut},
  title     = {Spielen am Computer : Chancen f{\"u}r den Sachunterricht},
  issn      = {1865-4991},
  year      = {2009},
  language  = {de}
}
@article{Giest2009,
  author    = {Giest, Hartmut},
  title     = {Bildungsstandards und Kompetenzen im Sachunterricht},
  issn      = {1865-4991},
  year      = {2009},
  language  = {de}
}
@article{Giest2009,
  author    = {Giest, Hartmut},
  title     = {Kind und Natur(-wissenschaft) : kompetenzorientiertes Unterrichten in der naturwissenschaftlichen Perspektive},
  issn      = {1865-4991},
  year      = {2009},
  language  = {de}
}
@article{Giest2009,
  author    = {Giest, Hartmut},
  title     = {Kompetenzorientiert lernen},
  year      = {2009},
  language  = {de}
}