• Journal for Research in Mathematics Education (1986) Vol. 17, No. 2

    ISSN 0021 -8251 JOURNAL FOR RESEARCH IN MATHEMATICS EDUCATION VOLUME 17 NUMBER2 MARCH 1986 National Council of . Teachers of Mathematics A Journal of the National Council of Teachers of Mathematics Thr journal for Research 111 McJthemJttcs EducattOit is drvored to the inrcrests of teJchers of mathematics and mathcmattc