Desmulyani. “Upaya Meningkatkan Aktivitas Dan Hasil Belajar Matematika Melalui Model Pembelajaran Problem Posing”. Journal of Education and Culture 2, no. 2 (June 30, 2022): 89–104. Accessed July 2, 2025. https://ejournal.indrainstitute.id/index.php/jec/article/view/234.