Kosasih, Usep. “Project-Based Learning in Analytical Geometry: Problem-Solving and Representational Reasoning”. Pasundan Journal of Mathematics Education : Jurnal Pendidikan Matematika 16, no. 1 (May 31, 2026): 25–39. Accessed July 17, 2026. https://journal.unpas.ac.id/index.php/pjme/article/view/41199.