000 00689nam a2200241 a 4500
005 20210219153445.0
008 991125n 000 0 u
035 _aUPN01000100990
100 _aEckstein, Shulamith G.
222 _aJOURNAL OF RESEARCH IN SCIENCE TEACHING
245 _aStage theory of the development of alternative conceptions
300 _a45-64
362 _a30, No. 1, 1993
505 _aOctubre 1993
653 0 _aCONCEPTOS CIENTIFICOS
653 0 _aCONCEPTOS ERRONEOS
653 0 _aEDUCACION CIENTIFICA
653 0 _aETAPAS DE DESARROLLO
653 0 _aFORMACION CONCEPTUAL
700 _aShemesh, Michal
904 _aAC
_b038801
905 _aArticulo
999 _c77356
_d77356