Gross participation and throughput rates in higher education institutions in South Africa indicate an inequitable and poorly functioning system. This interpretive study argues for an approach that enhances epistemological and ontological access and examines how an intervention that includes an overt approach in dealing with the nature of science,…

Seeks to identify some of the issues associated with the role of models in scientific explanations. Develops a typology of explanations and explores the notion of appropriateness in scientific explanations. Investigates the nature of models and their contribution to explanations. (DDR)

Seeks to identify some of the issues associated with the role of models in scientific explanations. Discusses factors which may influence the way that those explanations are understood and the judgment of their appropriateness by the various audiences involved. Contains 55 references. (DDR)