This article explores heterogeneity as fundamental to learning. Inspired by Bakhtin's notion of heteroglossia, a design team consisting of an experienced classroom teacher and 2 researchers investigated how a class of 3rd and 4th graders came to understand disciplinary points of view on heat, heat transfer, and the particulate nature of matter.…

This study investigated the engagement rates of 25 students in a mixed-age classroom of third- and fourth-graders. The time on task of the students was compared using thematic, interdisciplinary instruction and traditional, single-subject instruction. Engagement rates were determined using an engagement rate observation form, students'…

Describes the use of cooperative learning centers (CLCs) in an inner-city fourth-grade classroom. These seven CLCs focused on mathematics, language, writing, learning with kindergartners, computers, interest group, and free reading, with students taking weekly turns at being the center "specialist" or group leader. The effectiveness of…