This document compares and contrasts two instructional design models: ADDIE and Dick & Carey. ADDIE is a linear model originally developed for the U.S. Armed Forces consisting of 5 phases - analysis, design, development, implementation, and evaluation. Dick & Carey is also known as the systems approach model and focuses on delivering content through 9-10 interconnected phases including instructional goals, performance objectives, and formative and summative evaluation. Both models provide structured guidance for instructional design but ADDIE is more rigid while Dick & Carey allows for revision at any phase and emphasizes clear, measurable learning objectives.