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This research was carried out with the aim of exploring and understanding the mathematical concepts contained in traditional weapons artifacts from historical heritage at Somba Opu Fort, South Sulawesi. The method used in this research is qualitative with an ethnographic approach. This research stage begins with conducting a study, preparing instruments, collecting data through observation and interviews, and data analysis. Data collection techniques in this research are observation, interviews and documentation. The main instrument in this research is the researcher himself, and the tools used are observation guidelines, interview guidelines and documentation. The results of the research show that there are mathematical concepts such as spatial shapes and flat shapes in traditional weapon artifacts that can make it easier for students to understand mathematics learning as well as get to know culture.