effects of two educational method of lecturing and role playing on knowledge and performance of high school students in first aid at emergency scene

background: this study aimed to investigate the effects of two educational methods on students' knowledge and performance regarding first aid at emergency scenes. methods: in this semi-experimental study, the sample was selected randomly among male and female public high school students of isfahan. each group included 60 students. at first the knowledge and performance of students in first aid at emergency scene was assessed using a researcher-made questionnaire. then necessary education was provided to the students within 10 sessions of two hours by lecturing and role playing. the students' knowledge and performance was assessed again and the results were compared. results: it was no significant relationship between the frequency distribution of students' age, major and knowledge and performance before the educational course in the two groups. the score of knowledge in performing cpr, using proper way to bandage, immobilizing the injured area, and proper ways of carrying injured person after the education was significantly increased in both groups. moreover, the performance in proper way to bandage, immobilizing injured area and proper ways of carrying injured person after educational course was significantly higher in playing role group compared to lecturing group after education. conclusions: iran is a developing country with a young generation and it is a country with high risk of natural disasters; so, providing necessary education with more effective methods can be effective in reducing mortality and morbidity due to lack of first aid care in crucial moments. training with playing role is suggested for this purpose. key words: speech, role playing, accidents, emergency.