META ANALYSIS ON THE APPLIED OF PROBLEM BASED LEARNING IN JUNIOR HIGH SCHOOL STUNDENTS TO THE SCIENCE LEARNING OUTCOMES. universe [Internet]. 9 Desember 2025 [dikutip 13 Agustus 2026];6(1):115-2. Tersedia pada: http://universe.ppj.unp.ac.id/index.php/universe/article/view/651