To provide aid and a possible method for determining the problem units in arithmetic or the simple situations that connect sufficiently with child experiences to indicate their acceptable usage

Rogers, Gertrude M.2017-04-202017-04-2019391939b14680294(OCoLC)07823598(OCoLC)ocm07823598https://hdl.handle.net/2144/21674Thesis (Ed.M.)--Boston University, 1939. This item was digitized by the Internet Archive.en-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictionsTo provide aid and a possible method for determining the problem units in arithmetic or the simple situations that connect sufficiently with child experiences to indicate their acceptable usageThesis/Dissertation