JOURNAL FOR RESEARCH IN VIATHEMATICS NATIONAL COUNCIL Of TEACHERS Of MATHEMATICS VOLUME 26 NUMBER 3 MAY 1995 The Joomal for Resrart:/1 ill /llatlronratic.r Educatio11, an olfic1:1l joumnl ol the NatiQnal Council of Teachen. of Mathemauuc,. IS de\'Oied 10 the inten:>ll> of teachell> of m:uhem:1uc' and mathcmMic~ educauo
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