Discusses the origin of the ADDIE model of instructional design and concludes that the term came into use by word of mouth as a label for the whole family of systematic instructional development models. Examines the underlying ideas behind the acronym analysis, design, development, implementation, and evaluation. (Author/LRW)

Discusses the redesign of educational systems and presents a designing matrix to help select boundaries of a new system. A conceptual framework for exploring educational system boundaries is described, systems models are discussed, and the three cells of the matrix are explained. (LRW)

Discusses design requirements, and advantages and disadvantages of the following learner-centered instructional development tools: information containers; authoring systems; templates, models, or widgets; learning-oriented instructional development tools; and adaptive learning-oriented systems. (AEF)