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

Date
1936
DOI
Authors
Caton, Anne Josephine
Version
OA Version
Citation
Abstract
Description
Thesis (Ed.M.)--Boston University, 1936. This item was digitized by the Internet Archive.
License
Based on investigation of the BU Libraries' staff, this work is free of known copyright restrictions