III · Science
A technique for appraising certain observable behavior of children in science in elementary schools
Subjects
Science · Study and teaching · Interest (Psychology) · Observation (Educational method) · Education, Elementary · Study and teaching (Elementary)
Language
ENG
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![Cover of [William Wheeler Hubbell, authorized to apply for patents.] by United States. Congress. Senate. Committee on Patents](/img/cover/10200621-M.jpg)
