“Peningkatan Motivasi Dan Hasil Belajar Kognitif Kelas X Melalui Model Problem Based Learning ”. Jurnal Pendidikan Guru Profesional 2, no. 1 (June 27, 2024): 55–62. Accessed July 2, 2025. https://journal2.upgris.ac.id/index.php/jpgp/article/view/836.