Describes methods for item construction for computer-based instruction (CBI). Use of a rational set generator (RSG) in presenting an adaptive sequence of items to the learner is described; a model matrix of a computer-based RSG is presented; concrete and defined concepts are discussed; and rule using is explained. (Four references) (LRW)

Shows how elaboration theory (ET) sequences the concepts in a taxonomy and argues that the product of an ET analysis is usually in general agreement with sequencing based on learning prerequisite relationships, and that ET sequencing of taxonomic concepts will not violate learning prerequisite relationships. (Author/MER)

Examines backward chaining, a method of producing demonstration films in which sequential steps in a procedure are taught backwards; that is, the last step is taught first, then the next to the last step, and so on. A film designed to teach procedures used in a science experiment is used as an example. (JJD)