Albeit the research on the ethnomathematics have extensively undertaken, little empirical evidence reports teachers' perception on the ethnomathematics approach. To fill the gap, this present case study showcases that the teachers positively perceived ethnomathematics approach. The case study design was applied in this study with a focus on an exploratory overview of Indonesian's teachers understanding ethnomathematics and practices. Teachers apply myriad media from Buginese and Makassar traditional meals and games in teaching math through the ethnomathematics approach, and most participants agree to include ethnomathematics in the math curriculum. This study found from the findings that by ethnomathematics students can grab the lesson easily and acknowledge their own culture based on the Indonesian National curriculum. Drawing on these findings, policy recommendations for teachers and school stakeholders, along with conceptual and empirical implications are discussed.