This document discusses developing instructional materials. It describes the designer's role in materials development and instructional delivery. When the designer is also the instructor, they design, develop and deliver the materials themselves. When they are not the instructor, the designer works with a team that may include managers, subject matter experts, materials developers and evaluators. The document also discusses factors that influence media selection, the components of an instructional package including materials, assessments and course information, and strategies for materials development like rough drafts, rapid prototyping and using tools and resources.