"Course-based undergraduate research experiences" (CUREs, or CBEs) are being explored in various STEM fields, especially biology, chemistry, geology. Here is one geology link that gives a flavor: "Are you looking for a CURE?" In the US, some of this activity is funded by the National Science Foundation (NSF); e.g., see this Meeting Report. One characteristic of CUREs is that the research is "authentic": this is not just problem-based learning, but rather explorations whose outcome is unknown both to the students and to the instructor, and ideally unknown to anyone.
Has anyone attempted course-based research in undergraduate math courses?
I am particularly interested in lower-level math courses, e.g., Discrete Math, but would appreciate hearing of (or links to) any explorations along these lines.