HUTAGALUNG, Margaretta Serevina; SUPARDI U. S. EFFECTIVENESS OF PROBLEM BASED INSTRUCTION (PBI) VS EXPOSITORY MODEL: A COMPARATIVE STUDY OF JUNIOR HIGH SCHOOL STUDENTS’ SPLDV PROBLEM SOLVING ABILITY . Academic Journal Research, [S. l.], v. 3, n. 2, p. 173–177, 2025. DOI: 10.61796/acjoure.v3i2.357. Disponível em: https://journal.antispublisher.com/index.php/acjoure/article/view/357. Acesso em: 4 oct. 2025.