Multiple external representations (MERs) are central to the practice and learning of science, mathematics and engineering, as the phenomena and entities investigated and controlled in these domains are often not available for perception and action. MERs therefore play a twofold constitutive role in reasoning in these domains. Firstly, MERs stand…

The similarities between television viewing and fantasy activity (daydreaming, reverie, mind-wandering, internal dialogue) more than warrant the building of a theoretical construct, especially in the context of recent empirical research on television viewing consequences. A construct of the television viewing process, based on cognitive theories…

Using William Blake's work, discusses the element of the ideal in the development of contemporary adolescents. Discusses a model of constructive change in which explicit future outcomes are used as a starting point to construct new skills needed for change. Describes a monitoring system to measure progress. (RC)