Describes and compares various assumptions of instructional design and of constructivism, some of which have been raised in other articles in this issue. Topics discussed include instructional design theory; instructional systems theory; mental models; categories of knowledge; knowledge representation; instructional strategies; collaborative…

This third in a series of edited transcripts based on a conference at Utah State University describes Merrill's Component Design Theory (CDT) and compares it to his earlier Component Display Theory. Topics discussed include concept structures, knowledge acquisition, components of an instructional design system, and a new CDT matrix. (10…

Description of a microcomputer-based instructional strategy used to adapt computer assisted instruction (CAI) to individual learners' needs highlights its use with elementary school arithmetic classes to solve work problems. Experiments with a control group that received conventional problems are described, and applications for undergraduate…

Describes study of undergraduates that compared the effects of different small group sizes on learner achievement using computer controlled interactive videodisc. The results of pretests and posttests are reported, learning achievement and instructional time are used to calculate an instructional efficiency index, and further research is…