@misc {MATHEDUC.02404926,
    author       = {Kareck, Thomas J.},
    title        = {Sharing Teaching Ideas. Unterrichtsideen.},
    howpublished = {Math. Teacher. (Sep 1991) v. 84(6) p. 450-53. [ISSN 0025-5769]},
    year         = {1991},
    msc2010      = {U63xx},
    identifier   = {1992d.37147},
}