Development of an Ethno-RME-Based Electronic Student Worksheet (E-LKPD) on Geometric Transformation Using Yogyakarta Batik Motifs to Improve Mathematical Problem Solving Ability. james. 2025;1(01):20-34. Accessed July 21, 2026. https://journal.orbioninstitute.com/index.php/james/article/view/65