Three-level teaching material for computer-aided lecturing

Three kinds of supporting material are needed for lectures: lecture notes, presentation material and guidance material for the lecturer. Current computer-aided presentation systems do not allow easy preparation and maintenance of these three interwoven materials. In this paper,:we present the idea of three-level teaching material and describe a computer-based system (SHOW) that can be used to produce the different forms from a single source, and to show the presentation version in a lecturing situation. Novel features of the presentation part include abolition the slide paradigm and discrimination of textual structures with colors during presentation. We also describe an empirical experiment on text discrimination techniques. It suggests that multiple color discrimination improves the learning of conceptually profound issues. (C) 1999 Elsevier Science Ltd: All rights reserved.