Composed of articles which appeared recently in "Educational Technology" magazine, this volume in the review series considers instructional systems. Topics covered include systems models for instructional design and management, the design of simulation systems, informal and vocational education, individualized instruction, operational learning systems, methodological issues, systems approaches to early education, instructional modules, cybernetics, reinforcers and motivators, teacher education, faculty development, instructional products, training systems, costs, and communication. (SH)