[SUMMARY] Objective: To clarify the reality of clinical instructors’ nursing practices while they execute their teaching role and obtain basic materials to support their job as role models for the nurses. Method: Non-participant observation was used to collect data. Data based on two-way interactions between the instructor and student and three-way interactions between the instructor, student, and patient were collected and analyzed qualitatively and inductively. Results: The 32 phenomena collected comprised 79 interactive scenes that involved six instructors, seven students, and others. Results revealed ten core categories of nursing practices while executing the role of an instructor, that is, the instructor provided recovery support through objective and empirical judgment based on thorough utilization of data and observations, assisted patients’ understanding of the recovery process through communicating and reiterating assessments, involved students in the execution of standardized nursing practices, made progress in supporting independence through performance appraisals and the obstruction of recovery due to poor judgments, and continued support that failed to detect changes which should have been an opportunity to reconsider the form of assistance suited to the patient. Discussion: The ten core categories of nursing practices while executing the teaching role could be categorized into two types of characteristic practices: 1) the type of nursing practices that were supportive of the patient recovery process and acted as a role model for the students and 2) those that hindered the students’ learning and threatened the recovery process of the patients. Demonstrating one’s nursing practice as a nurse practitioner to the students fulfilled the function of a nursing role model better than when the instructor emphasized the act of instruction. For this reason, the findings suggest that it is necessary to consider ways to contribute to improving the instructor’s capabilities concerning their nursing practice so they may better execute their teaching role.