Studied the relationship of teachers' I/D ratio to their students' achievement and retention of learning in senior high chemistry and junior high general science classes. Concluded that the student score on a standardized achievement test was dependent on the teacher I/D ratio as measured on Flanders scale. (CC)

Studied the effectiveness of using checklist-structured observations as a self-improvement technique for modifying teachers' verbal behaviors in the classroom. Concluded that significant changes were found in analyzing pre- and post-treatment audiotape recordings of participating teachers' regular classes. (CC)

Investigates the influence of treatment and the interactions between treatments and selected pupil characteristic variables, with respect to pupil achievement and preference for treatment, and examines treatment-teacher interactions. Among the findings, this study suggests that students prefer to operate in less structured modes for the medium or…