The challenge posed by algebra story problems creates a significant hurdle for many students, transcending both the mathematical content of the problem and the specific instructional background received. This study offers a distinctive contribution to the existing literature by focusing on the cognitive conditions essential for comprehension in…

Presents the conceptual levels theory of Hunt and his associates. Indicates how it can be used as a means to develop a theoretical framework from which the validity of unified science curricula can be examined. (HM)

Helping children to bridge the gap between physical materials and symbolic representations is the focus of this article. Examples are drawn from numerical topics, with several hierarchies illustrated. (MNS)

Described is a model for planning and conducting an investigation designed to teach science process skills. Use of this model illustrates the generalizability of process skills and facilitates their inclusion in novel curriculum areas and beyond the classroom. (DS)

Presents results of a case study to examine an elementary school teacher's transition from a teacher-as-dispenser and student-as-receiver view of learning to a teacher-as-provider and student-as-information-gatherer, processor, and constructor view of learning. Chronicles the transition in four stages. (20 references) (MDH)