This study examined whether graphic organizer instruction would facilitate comprehension, recall, and information transfer, and how much explicit instruction was necessary for independent generation of graphic organizers. Fifth graders read social studies information with or without graphic organizers and explicit instruction. Explicitness and…

Discussion of the effects of group aptitudes on achievement during small group learning highlights two studies that examined the effects of group composition on high and low aptitude college students. Heterogeneous and homogeneous aptitude groups are described, and an individual mastery contingency in the second study is explained. (21 references)…

Describes study that compared the achievement of high and low ability eighth-grade students working cooperatively during computer-based instruction. Homogeneous and heterogeneous grouping based on ability are explained, posttest results are analyzed, and implications for instructional design are discussed. (23 references) (Author/LRW)