Chisholm, Mary B.2017-04-202017-04-2019491949b147425367882062https://hdl.handle.net/2144/21425Thesis (Ed.M.)--Boston University, 1949. This item was digitized by the Internet Archive.en-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictionsThe evaluation of three programs for teaching arithmetic in grade oneThesis/Dissertation