000 00625nam a2200205 a 4500
005 20210219153445.0
008 991125n 000 0 eng u
035 _aUPN01000101037
100 1 _aSfard, Anna
222 _aJOURNAL FOR RESEARCH IN MATHEMATICS EDUCATION
245 _aSteering (dis) course between metaphors and rigor : using focal analysis to investigate an emergence of mathematical objects
300 _a296-327
362 0 _a2000 Vol. 31, no. 3
653 0 _aAPRENDIZAJE
653 0 _aCOMPUTADORA
653 0 _aCOMUNICACION
653 0 _aCONOCIMIENTO
904 _aAC
_b038848
905 _aArticulo
999 _c77393
_d77393