Dela Puspita, Hidayat, Dwi Novita Sari, and Asnarni Lubis. “The Effect of the Problem-Based Learning Model on the Mathematical Creative Thinking Ability of Seventh-Grade Students of Private Middle School Karya Pembangunan Deli Tua”. Journal on Math and Science Educational Technology, vol. 2, no. 1, Aug. 2026, https://eduresearch.web.id/index.php/jmset/article/view/101.