Motivation is an important element required for learning. Educators have a variety of instructional media and teaching formats available to present information. Selecting a medium that motivates learners is an important consideration. This study compares the effect of different media on learners' motivation to learn. Through the use of a survey instrument--the Instructional Materials Motivation Survey (IMMS)--overall motivation to learn was evaluated. This study provides new information in two areas. First, most applications of the IMMS and other motivational scoring scales on learner motivation have been conducted in academic arenas and included K-12 or college students. This study shifted the focus to adult learners in the workplace. This area has been much less explored. Second, the IMMS was modified to increase its scope to evaluate instructional media and format, not just instructional materials. (Contains 2 tables.)