The Smallest Meaningful Sample of Classroom Transactions.

Rosenshine, Barak

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Peer reviewed

ERIC Number: EJ086700

Record Type: CIJE

Publication Date: 1973

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ISSN: ISSN-0022-4308

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The Smallest Meaningful Sample of Classroom Transactions

Rosenshine, Barak

Journal of Research in Science Teaching, 10, 3, 221-226, 73

Discusses the number of observations necessary to obtain a trustworthy sample of classroom transactions by reanalyzing existing data. Eleven to twenty observations appear necessary for teachers' questions which require students to hypothesize. The reliability of a single observation was zero for four other questioning types. (CC)

Descriptors: Classroom Observation Techniques, Elementary School Teachers, General Science, Interaction Process Analysis, Lesson Observation Criteria, Questioning Techniques, Research Methodology, Science Education, Teacher Characteristics

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