''It's all about conversation:'' Challenges and Concerns of Faculty and Students in the Arts, Humanities, and the Social Sciences about Education at Scale

As colleges and universities continue their commitment to increasing access to higher education through offering education online and at scale, attention on teaching open-ended subjects online and at scale, mainly the arts, humanities, and the social sciences, remains limited. While existing work in scaling open-ended courses primarily focuses on the evaluation and feedback of open-ended assignments, there is a lack of understanding of how to effectively teach open-ended, university-level courses at scale. To better understand the needs of teaching large-scale, open-ended courses online effectively in a university setting, we conducted a mixed-methods study with university instructors and students, using surveys and interviews, and identified five critical pedagogical elements that distinguish the teaching and learning experiences in an open-ended course from that in a non-open-ended course. An overarching theme for the five elements was the need to support students' self-expression. We further uncovered open challenges and opportunities when incorporating the five critical pedagogical elements into large-scale, open-ended courses online in a university setting, and suggested six future research directions: (1) facilitate in-depth conversations, (2) create a studio-friendly environment, (3) adapt to open-ended assessment, (4) scale individual open-ended feedback, (5) establish trust for self-expression, and (6) personalize instruction and harness the benefits of student diversity.