Wulan, Indah Indar, Warsito Warsito, and Ratu Sarah Fauziah Iskandar. “Development of Mathematics Teaching Materials on Statistics With A Problem-Solving Approach”. Indonesian Journal of Teaching and Learning 4, no. 2 (May 29, 2025): 108–117. Accessed June 27, 2025. https://journals.eduped.org/index.php/intel/article/view/1493.