An application of reinforcement principles to classroom teaching
Subtitle: the teaching of phonemically and orthographically analyzed spelling materials by an automatic mechanical teaching device; [a report] Principal investigator: Douglas Porter
Published: 1961
Place of publication: Cambridge
Language: eng
Number of pages: 117
Subjects: English language -- Orthography and spelling -- Study and teaching; Teaching machines
Notes: "The research reported herein was performed pursuant to contract number SAE-6899 with the United State[s] Office of Education, Department of Health, Education, and Welfare."

Stamped on t.p.: Cooperative research project no.142

Bibliography: leaves 114-116