Problem framing is an essential yet under-explored aspect of problem-based historical inquiry. This study investigated how tenth-grade students in one AP US History class framed an ill-structured historical causal reasoning problem. Data included students' written brainstorms, students' responses to open-ended interview questions, and…

Facilitating the collaboration of multiple groups is a critical element in problem-based learning (PBL). In face-to-face learning environments, PBL facilitators require sufficient information about a group's progress and collaboration in real time to make decisions about when and how to facilitate. The capacity of facilitator is limited as PBL…