Reviews research on instructional methods designed to operationalize the principal elements of Allport's contact theory of intergroup relations. These cooperative learning methods, which employ ethnically mixed learning groups who are rewarded for learning as a group, have had positive effects on intergroup relations and on the academic…

This monograph presents descriptions of six extensively researched and widely used cooperative learning methods and discusses research on the effects of cooperative learning. The term "cooperative learning" refers to instructional methods in which students of all levels of performance work together in small groups toward a common goal.…

Component-building research on practical issues of instructional design can make a substantial contribution to research-based school improvement. Component-building research consists of rigorous within-school experiments that test various components of instruction for effects on student achievement. Research would address practical issues that…