Sweeney, Margaret E2014-01-142014-01-1419291929b14713597https://hdl.handle.net/2144/7311This item was digitized by the Internet Archive. Thesis (Ed.M.)--Boston Universityen-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictionsChecking the adequacy of long division through trial with fifth and sixth grade childrenThesis/Dissertation