Ditasona C. Exploring Ethnomathematics in Batak Toba Carvings for Locally-based Mathematics Teaching Material. JERE [Internet]. 2023 Aug. 27 [cited 2024 Nov. 30];7(3):399-407. Available from: https://ejournal.undiksha.ac.id/index.php/JERE/article/view/66787