Compared were inductive and deductive sequencing of stimulus material to produce two single concept films. The concept developed was "The longer the pendulum's arm, the more slowly the pendulum swings." Each film contained the same number of identical scenes; only the sequencing of their order of presentation was altered to provide the two different approaches to the same concept. Covert responses to the films were measured by pupillometrics. No significant differences between the two methods were discovered on either the initial test answers or the retention test scores. Girls did significantly better with the deductive method, whereas boys did significantly better with the inductive method. In an adjunctive study, using a television presentation of the film to 1,670 children, findings for grade 5 and 6 were similar. Grade 4 children showed significantly better work with the deductive approach. It was concluded that (1) while the grade 4 children had not reached the level of formal operations, grade 5 and 6 children had and (2) the more structured deductive approach was more efficient for teaching factual information to girls and to children prior to the stage of formal operations. (GR)