In elementary schools, the government curriculum guidelines were revised. Education on “acquiring knowledge about natural disasters”, “protecting oneself from disasters” and “behaving to protect people from disasters” is required. Such the education is expected to be fully implemented in 2020. In Wakayama prefecture, many human losses were caused by typhoon TALAS in 2011 and large‐scale sediment disasters occurred in the southern part of the prefecture. In this study, a new approach for the education of sediment disaster prevention is proposed in which an RPG (role‐playing game) is used. The RPG was developed for the upper grade of elementary school in collaboration with NITW (National Institute of Technology, Wakayama College) and IWSRE (Wakayama Sabo Research and Education Institute). The education using the RPG was carried out at some schools, and its effectiveness was investigated by the questionnaire survey to the students and teachers.