Sumaji, Sumaji, Evi Widianingrum, Savitri Wanabuliandari, and Kasem Premprayoon. 2025. “The Effectiveness of Problem-Based Learning Assisted With the Ethnomathematics-Based Geocube E-Module on Problem-Solving Skills”. JRAMathEdu (Journal of Research and Advances in Mathematics Education) 10 (3):135-45. https://doi.org/10.23917/jramathedu.v10i3.3228.