Every year, 17.9 million people die from cardiovascular diseases, many resulting in sudden illness. Cardiorespiratory arrests affect 350 to 700 thousand people outside the hospital, with a survival rate of around 10%. Survival depends on rapid and adequate care, avoiding sequelae and improving the prognosis. Training laypeople is crucial as most events occur outside of the hospital and lack of training is one of the leading causes of death. Given this scenario, training the lay population for these types of care is a social responsibility that undergraduate health courses must include as extension activities in their curriculum. Therefore, this study aimed to report the experience of an extension project of educational actions aimed at training the community in first aid. The study was carried out in the Community Training Curricular Unit in First Aid, with students in the fourth period of the undergraduate nursing course at a private university located in the city of São Paulo – Brazil. The students were divided into groups of up to eight people and developed the educational action following the maker space methodology, which is developed in 8 stages. In the first stage, the students looked for a place to develop the training and identified their needs in relation to first aid, which were: basic life support, bleeding and hemorrhages, choking and sprains and fractures. Given this, the students developed a resolution plan focused on this reality, including the collection of material and human resources for action (2nd and 3rd stage). In the 4th stage, student training was carried out to develop and adjust the action, by the teacher. Subsequently, in the 5th and 6th stages, the materials were made and tested, including the mannequins that would be used. The 7th stage comprises the action itself in pre-selected locations, which were: gyms, gas stations, schools and companies. In total, 20 establishments received the training. At this stage, students evaluated the effectiveness of the action. In the last stage, by observing performance, the students identified the participants with the best performance and encouraged them to play the role of multipliers in their work environment. Informal instruments were used to assess the level of knowledge assimilation and satisfaction with the training. The activity created a dynamic environment that encouraged creativity and collaboration among students, as well as promoting the reuse of materials for sustainable simulators. It improved students' perception of their role as citizens and health educators. In addition to the multiplication of knowledge with the aim of saving lives, this activity also envisions a more conscious and responsible society.

Keywords: Nursing Students, First aid, Education.