Although online learning has increased as a delivery method of instruction in higher education, learners may still feel isolated from the instructor and peers due to a lack of physical presence. Thus, intentional and purposeful online course design is necessary. To remediate feelings of isolation, cooperative learning strategies have been implemented in online courses, resulting in positive outcomes. A long-term cooperative learning project based on social interdependence theory (SIT) has been implemented into two asynchronous online courses at two different higher education institutions. A mixed-method, design-based research study was conducted to examine students' attitudes towards cooperative learning. Participants of this study included undergraduate and graduate students who completed pre-and post-surveys. Classroom artifacts were also collected to analyze the group work and dynamics. Even though the quantitative results showed a decrease in students' attitudes towards cooperative learning, qualitative data indicated that students benefited from this experience. Qualitative data also provided further insights on the group dynamics. Students' high expectations of group work, faculty support, and shared sense of responsibility among group members could have affected their perceptions of cooperative learning. This study was the first cycle of a multi-cycle effort to develop a robust cooperative learning activity that will benefit learners in future courses.