“INCREASING STUDENT LEARNING INTEREST USING THE PROBLEM BASED LEARNING (PBL) LEARNING MODEL ASSISTED BY PUZZLE MEDIA IN SCIENCE LEARNING FOR GRADE IV OF KAYUAPU ELEMENTARY SCHOOL” (2025) PIONIR: JURNAL PENDIDIKAN, 14(1), pp. 182–190. doi:10.22373/pjp.v14i1.25742.