00276    a2200121   4500001000700000020001800007041000800025250001000033300001000043040002500053245004300078260003300121108090  a9781609964818  apor  a. ed.  a64 p.  aBR-BrIDEAcBR-BrIDEA10aStep-by-step problem solvingbgrade 6.  a[S.l.]bCarson-Dellosac2012