The purpose of this fastback is to provide a primer on developing project-based multimedia instruction. The first section discusses reasons for using multimedia, including advantages to be gained instructionally from teachers using multimedia and--from the standpoint of active learning--from students using multimedia. How authoring programs work is discussed in the second section, and the following main components of developing a multimedia presentation are summarized: researching the subject matter, writing text, acquiring media, and assembling the presentation. The next section focuses on designing multimedia projects, including content assessment, technology assessment, self-assessment, the authoring process, and time, tests and trial runs. The fourth section describes the process of acquiring media files, including images, sounds, and animation/videos. The fifth section briefly describes several multimedia projects that illustrate the potential for project-based instruction using multimedia in elementary, secondary, and higher education settings. The final section presents an interview with a high school English teacher on a multimedia-based project. A list of resources is provided. (AEF)