In this study, it was aimed to investigate the effect of diabetes complications training on endocrine system diseases and nursing care in the Internal Medicine Nursing course on the knowledge level of nursing students.

Puzzles, which are among the active learning tools, are frequently preferred today because they make learning fun, are economical, improve problem-solving skills and offer understandable learning. The student's involvement in a fun game, his effort to find the correct information, and the feedback he receives afterwards have an important place in terms of learning. It develops students' decision-making power with a critical perspective. Puzzles increase students' motivation and self-confidence by turning complex concepts into a hobby. The use of the puzzle technique in learning concepts related to theoretical knowledge is among the studies carried out in recent years. The puzzle technique is used in many fields such as pharmacology in nursing education (Shawahna & Jaber, 2020), child health and diseases (Kaynak et al., 2023), pain management (Köse Tosunöz & Deniz Doğan, 2023), teaching in nursing (Kalkan et al., 2022). It has been shown to have a positive effect on learning information. In this study, it was aimed to investigate the effect of diabetes complications training on endocrine system diseases and nursing care in the Internal Medicine Nursing course on the knowledge level of nursing students.

Inclusion Criteria:

• Volunteering to participate in research
• Having course continuity

Exclusion Criteria:

• Not volunteering to participate in the research