ISSN 0021-8251 JOURNAL FOR RESEARCH IN MATHEMATICS EDUCATION An Analysis of Some of Piaalt's Topolollcal Tasks tram 1 Mathematical Point of View J Larry Martin A Test with Selected TopoiQiical Properties of Plqefs Hypoth•ls concemlna the Spatial Repr•entation of the Y01111 Child } Larry Martin EllmtntaiJ and Middle Sch
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