As a result of the Biological Sciences Curriculum Study (BSCS), instructional content and style were studied in six teachers teaching the concept of photosynthesis. The same BSCS curriculum program was used by all six teachers; all six had some previous BSCS training. The students in the six classes had been selected on the basis of high ability…

Assuming that pupil involvement in academic learning activities (involved time) is a behavioral indicator of pupil learning, this study examined two context variables (subject area, day of the week) one instructional variable (activity format) and one pupil variable (previous achievement growth) in relation to pupil involved time. Individual pupil…