In the last decade there have been rapid developments in the field of
computer-based learning environments. A whole new generation of
computer-based learning environments has appeared, requiring new
approaches to design and development. One main feature of current
systems is that they distinguish different knowledge bases that are
assumed to be necessary to support learning processes. Current
computer-based learning environments often require explicit
representations of large bodies of knowledge, including knowledge of
instruction. This book focuses on instructional models as explicit,
potentially implementable representations of knowledge concerning one or
more aspects of instruction. The book has three parts, relating to
different aspects of the knowledge that should be made explicit in
instructional models: knowledge of instructional planning, knowledge of
instructional strategies, and knowledge of instructional control. The
book is based on a NATO Advanced Research Workshop held at the
University of Twente, The Netherlands in July 1991.