Classroom management represents an important skill and knowledge set for achieving student learning gains, but poses a considerable challenge for beginning teachers. Understanding how teachers' cognition and conceptualizations differ between experts and novices is useful for enhancing beginning teachers' expertise development. We created a coding…

This paper presents a framework for understanding conditions of discovery learning in computer-based microworlds. It begins with a short discussion of problems related to a traditional type of microworld--i.e., learning tools for mathematics--using the Dienes Multibase Arithmetic blocks as an example. In this discussion, hypotheses are developed…

Describes a study conducted in Dutch primary schools to alter the cognitive effects that television violence can have on 10- to 12-year-olds by encouraging them to evaluate critically the portrayal of violence. Teacher and student attitudes are discussed, and the educational effects of the curriculum are considered. (Contains 20 references.) (LRW)