A cognitive tool for classification learning

This paper describes InterModeller, a computer program intended to assist children in primary and secondary schools to learn concepts and skills associated with classification. The design of the program consolidates and extends previous work by including support for multiple forms of representation, provision for automatic transformation between representational forms, and the ability to convert an inefficient model into an efficient one. A "seven steps" methodology for classroom model-building is proposed and justified. Evaluation evidence suggests that the program engages learners effectively in constructive thinking and that its incorporation of a variety of forms of representation enriches the model-building process.