00405nam a2200145Ia 4500003000600000005001700006008004100023020001800064040002500082082001900107100002200126245004900148260002800197500003400225NORSU20240710064845.0240214s9999    xx            000 0 und d  a0-495-09191-2  aNORSU-DumcNORSU-Dum  a372.7 K38 2008  aKennedy, Leonard  0aGuiding children’s learning of mathematics  bThomson Wadsworthc2008  aincludes references and index