Describes a study that examined changes in the structural complexity of knowledge held by two groups of introductory college-level biology students (N=68, N=93). The subjects constructed concept maps at four-week intervals throughout the instructional term. Contains 49 references. (DDR)

Investigates the role of talk, writing, and talk and writing on the learning and retention of simple and integrated knowledge, and describes the mechanisms by which talk and writing mediate these processes. Suggests that talk is important for sharing, clarifying, and distributing knowledge among peers, and writing is an important tool for…

Contemporary assessment practices in science education have undergone significant changes in recent decades. The basis for these changes and the resulting new assessment practices are the subject of this two-part paper. Part 1 considers the basis of assessment that, more than 25 years ago, was driven by the assumptions of decomposability and…