The document provides an overview of instructional design including definitions, history, theories, models, and processes. It defines instructional design as the systematic development of instruction through analysis of learning needs, goals, delivery methods, and evaluation. The ADDIE model of analysis, design, development, implementation, and evaluation is described as a common instructional design process. Learning theories including behaviorism, cognitivism, and constructivism and their implications for instructional design are also summarized.