The simultaneous effects of two instructional variables of degree of teacher direction (student- versus teacher-directed) and time allowed for study and the student variable of general ability are described for student achievement (N=912) in three life-science instructional modules. (Author)

This synthesis of research in academic engagement addresses studies in several academic areas. A general relationship of teacher performance and student engagement in learning tasks is noted. Cites studies indicating a relationship between degree of engagement and achievement and suggests numerous research questions for science education…