Hutagalung MS, Supardi U. S. EFFECTIVENESS OF PROBLEM BASED INSTRUCTION (PBI) VS EXPOSITORY MODEL: A COMPARATIVE STUDY OF JUNIOR HIGH SCHOOL STUDENTS’ SPLDV PROBLEM SOLVING ABILITY . ACJOURE [Internet]. 2025 Jun. 28 [cited 2025 Oct. 4];3(2):173-7. Available from: https://journal.antispublisher.com/index.php/acjoure/article/view/357