ISSN 002 1-8251 OURNAL FOR RESEARCH IN MATHEMATICS EDUCATION VOLUME 25 NUMBER 1 JANUARY 1994 iVational Council oj Teachers o.f Jv!athenzatics Th~ Joumal for Rr~l!arclt i11 Mathematics Eduratiou. ~n offic1~l JOUm,tl uf the Nnllonal Counctl of Teacher' ot Mathe mill I.:,. " de•utcd tn the tniNeH' of teacher-of ma1hcma11~
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