Aim: In this study, it was aimed to develop a pain biochemical activity model taken from a three-dimensional printer and fixed by applying epoxy resin and to investigate the effect of this model on nursing students' understanding of the pain mechanism and their motivation to learn.
Methods: The universe of the study consisted of students enrolled in the Biochemistry course at the faculty of nursing of a university in the north of Türkiye during the spring semester of the 2023-2024 academic year. Students were divided into three strata based on their achievement average: high (75 and above), moderate (55-75), and low (54 and below). Forty-five students from each stratum were selected using computer-assisted randomization and assigned to the intervention and control groups. "Student Identification Form", "Pain Mechanism Information Form", "Instructional Material Motivation Scale" and The CONSORT checklist were used to collect data.