00809nam a2200205 a 45000010008000000030009000080080041000170100017000580200015000750400028000900820014001182450095001322600071002273000047002984900079003455040041004246500049004657000021005148300068005351546622BD-DhAAL090831s1989    vaua     b    000 0 eng d  a\\\91106394   a0873532724  aDLCcDLCdDLCdBD-DhAAL00a372.722000aNew directions for elementary school mathematics /cPaul R. Trafton, 1989 yearbook editor.  aReston, Va. :bNational Council of Teachers of Mathematics,c1989.  aviii, 245 pages :billustrations ;c24 cm.1 aYearbook / National Council of Teachers of Mathematics,x0077-4103 ;v1989  aIncludes bibliographical references. 0aMathematicsxStudy and teaching (Elementary)1 aTrafton, Paul R. 0aYearbook (National Council of Teachers of Mathematics) ;v1989.