“IMPLEMENTATION OF PROBLEM BADES LEARNING (PBL) BASED LESSON STUDY (LS) MODEL TO IMPROVE COGNITIVE LEARNING OUTCOMES VIII STUDENTS OF TONDANGOW CHRISTIAN JUNIOR HIGHT SCHOOL” (2023) Novateur Publications, pp. 1–10. Available at: https://novateurpublication.org/index.php/np/article/view/173 (Accessed: 5 December 2025).