This document discusses instructional design and planning, specifically regarding systems theory and its relation to instructional systems. It covers key concepts of systems theory including that components respond when manipulated and that there is interdependence and feedback. An instructional process is viewed as a system with the purpose of bringing about learning. If a learner's performance is unsatisfactory after instruction, changes are needed to provide more effective instruction. Instructional design is defined as the process of solving instructional problems through systematic analysis of learning conditions. Methods for selecting methods, media, and materials in instructional design are discussed, including choosing instructional strategies and creating new instructional materials by considering learning objectives and putting oneself in the learner's shoes.