• Journal for Research in Mathematics Education (1990) Vol. 21, No. 2

    ISSN 0021-825 1 JOURNAL FOR RESEARCH IN ~THEMATICS EDUCATION VOLUME 21 NUMBER 2 MARCH 1990 National Council of Teachers of Mathematics I The Joumal jor Research;, Mathematics Educatiion an official journal of the National Council of Teachers of Mathematics. is devoted to the interests of teachers of mathematics and mat