Successive Approximation Model (SAM) is an instructional design model that emphasizes an iterative and collaborative approach to developing learning content. It involves multiple rounds of prototyping, review, and revision to create effective and engaging learning experiences. The SAM model consists of three main phases: preparation, design, and development. Each phase includes specific activities such as analysis, prototyping, and evaluation, allowing for continuous improvement and stakeholder feedback. SAM promotes agility, efficiency, and learner-centered design in the development of eLearning courses and training programs.