Abstract
In 1931, the national society for the Study of Education devoted a yearbook to a report on the textbook, and the authorities conceded that the textbook is the most valuable single piece of instructional equipment available to the teacher.2 However, the fact that manual material has become a large fac tor in the preparation and selection of arithmetic textbook series has not been similarly recognized nor has any serious attempt been made to evaluate arithmetic manuals in light of teacher needs and usage.
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