Research on young children and their understanding and use of models indicates that they have particular difficulty understanding and using symbols that are in themselves interesting objects (have dual representation). Implications for the use of symbols for educational purposes are discussed, reviewing several commonly used symbolic objects. (SLD)

Reviews approaches to machine learning (development of techniques to automate acquisition of new information, skills, and ways of organizing existing information) in symbolic domains. Four categorical tasks addressed in machine learning literature are examined: learning from examples, learning search heuristics, learning by observation, and…

The "symbol systems approach" to the study of computers in education that is outlined avoids the pitfalls of past media research--particularly research on the effects of television on children's learning and knowledge--and asserts that media can be usefully distinguished in terms of the symbol systems they present and the kinds of…