Wahyuni, M., Zulfah, Astuti and Zulhendri 2022. The Error in Ethnomathematics Exploration on Silat Perisai in Kampar District. Journal of Education Research and Evaluation. 6, 3 (Oct. 2022), 565–575. DOI:https://doi.org/10.23887/jere.v6i3.53041.