Gufron E, Santosa A, Kadarmanto A. PENINGKATAN IMPLEMENTASI MODEL PROBLEM BASED LEARNING UNTUK MENINGKATKAN HIGHER ORDER THINKING SKILLS (HOTS) SISWA DI BONDOWOSO (Studi Kasus MAS Miftahul Ulum Pancoran). SIGMA [Internet]. 2025Feb.8 [cited 2026Feb.15];3(1):26-35. Available from: https://journal.unibo.ac.id/index.php/sigma/article/view/1076