Muplihah, and Harfin Lanya. “Development of a Pirie-Kieren Based Quadratic Equation Module Integrated With Game-Based Learning”. Pi: Mathematics Education Journal 9, no. 2 (October 31, 2026): 1–10. Accessed November 1, 2026. https://ejournal.unikama.ac.id/index.php/pmej/article/view/14920.