Describes a study that assessed the impact of four half-hour science programs for fourth graders aired on commercial radio in a causal-comparative between-groups study with prebroadcast and postbroadcast questionnaires. Formative and summative evaluation of the programs is described, and results are reviewed. (21 references) (LRW)

This study examined the relative effects of homogeneous versus heterogeneous ability grouping on performance and attitudes of students working cooperatively during interactive videodisc instruction. After two cooperative training sessions 80 fourth through sixth grade students, classified as high and low ability, were randomly assigned to…

Describes a study of high school students that investigated students' responses to an anomaly generated by the juxtaposition of opposing explanatory frameworks and examined the nature and impact of cognitive conflict as students moved from prescientific to scientific explanatory frameworks concerning the concept of force. (19 references)…

Discussion of school effectiveness, achievement outcomes, and sociocultural influences focuses on a study of Nigerian high school students that was conducted to determine whether or not instruction based on a sociocultural model could significantly alter students' attitudes toward learning and achievement in science. (51 references) (LRW)