The purpose of this paper is to describe the evaluation results of using an interactive design modelfor the development of an online course. Specfically, it examines: (a) O As the number of Internet-based courses increases and distance learning programs grow in popularity, educators raise important questions about the quality of these courses and programs (Muirhead, 2000(Muirhead, , 2001. One of the concerms is the level of interactivity (communication, participation, and feedback) between students and between teachers and their students (LaRose & Whitten, 1999;McNabb, 1994;Sherry, 1996). As Foshay and Bergeron (2000) observed, there is a big difference between being able to distribute information with the Internet and being able to teach with the Internet. While learning is ultimately an individual enterprise, the support of a group with a common learning objective can produce a synergistic facilitation of learning by each member of that group.Nonetheless, the social dimension of learning in online courses or Internet-based instruction has received little attention. Many educators advocating distance learning believe that interactivity is a vital element in the educational process (e.g., Moore, 1991Moore, , 1992Moore, , 1993Moore & Kearsley, 1995;Muirhead, 1999;Parker, 1999;Saba & Shearer, 1994;Spitzer, 2001;Zirkin & Sumler, 1995). However, critics stress that interactivity is the missing element in distance education because online classes either do not emphasize online interaction or face reluctance from the students to participate in online discussion. A few researchers who studied online courses (e.g., Boshier et al., 1997;Hiltz, 1997;Kearsly, 1995;McNabb 1994;Sherry, 1996) observed that while communication options (e.g., e-mail, bulletin boards, conferencing systems, whiteboards, chat rooms, and videoconferencing) are plentiful and increasing, Internet-based -instruction (online courses) has been focused mainly on student-content and self-study les-