This paper reports the findings of three independent replications of Peterson's (1971) study on the effect of organizers and the knowledge of a behavioral objective on the learning and retention of a mathematical concept. The purpose of these studies was to test the hypothesis that the learning and retention of a mathematical concept can be facilitated by providing the learner with an advance organizer (AO), a post organizer (PO), or knowledge of the behavioral objective (KBO).

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Process and Experience in the Language Classroom (Applied Linguistics and Language Study Series).: Michael Legutke and Howard Thomas. Developing Communicative Competence in a Second Language.: Robin C. Scarcella, Elaine S. Anderson, and Stephen D. Krashen (Eds.).