00486nam a22001217a 4500020002400000082001500024100005300039245003900092260002500131300003600156500002000192650015200212  a9781118001806 (pbk)  a372.7bREY  aRey, RobertaMary M. LindquistaDiana V. Lambdin  aHelping children learn mathematics  aAmericabWileyc2012  axiv, 430 p.b: ill.c; 27.5 cm.  aIncludes index.  aMathematicsaPrimary and elementaryvStudy and teachingvEnhance learning and teachingvPlace valuevOperationsvNumber theoryvData analysisvFBSH