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Emphasizing iterative practices for a sequential course-based undergraduate research experience in microbial biofilms.

Iteration is a fundamental area of course design in course-based undergraduate research experiences (CUREs). Iteration includes development of many skills necessary for laboratory work, experimental design, data analysis, communication, and teamwork. With a focus on the microbial biofilm research track of the First-year Research Immersion (FRI) program, the perceptions of four student cohorts were examined at the end of the three-term CURE sequence, relative to exposure to iterative tasks, learning gains and benefits from the research experience. Based on results from the first two cohorts, substantial changes were made in the CURE sequence to increase iterative tasks and discussion with students about the iterative nature of research. In turn, the results for the latter cohorts reached FRI program targets. In sum, novice researchers benefit from a deliberate step-wise approach for developing skills to meet the requirements and understand the complex role of iteration in real research.