00721nam a2200217Ia 450000500170000000800410001724501290005810000190018770000200020626000660022630000230029230000110031550000480032602000180037465000490039205000150044154600120045633600090046833700150047733800110049220260803094043.0251212s2010    xx            000 0 und d1 aElementary mathematics is anything but elementary : bcontent and methods from a developmental perspective /cDamon L. Bahr.  aBahr, Damon L.  aDe Garcia, Lisa  aAustralia ; Belmont, CA :bWadsworth Cengage Learning,c2010.  axx, 517 p.: bill.  c28 cm.  aIncludes bibliographic references and index  a9780618928170  aMathematicsxStudy and teaching (Elementary)  a372.7 B14e  aEnglish  aText  aUnmediated  aVolume