Margareta, Angelina, Nizlel Huda, and Wardi Syafmen. “Pengaruh Model Contextual Teaching Learning Dan Problem Based Learning Dengan Open Ended Terhadap Kemampuan Berpikir Kreatif Matematis Siswa”. Kognitif: Jurnal Riset HOTS Pendidikan Matematika 5, no. 1 (March 27, 2025): 236–246. Accessed April 25, 2025. https://etdci.org/journal/kognitif/article/view/2838.