How much time is needed to take an average fifth or sixth grade pupil from inaccuracy to 100% accuracy in a fundamental process of arithmetic, multiplication for example

Caton, Anne Josephine2017-04-202017-04-2019361936b14733353(OCoLC)07872623(OCoLC)ocm07872623https://hdl.handle.net/2144/21465Thesis (Ed.M.)--Boston University, 1936. This item was digitized by the Internet Archive.en-USBased on investigation of the BU Libraries' staff, this work is free of known copyright restrictionsHow much time is needed to take an average fifth or sixth grade pupil from inaccuracy to 100% accuracy in a fundamental process of arithmetic, multiplication for exampleThesis/Dissertation