INCREASING STUDENTS’ ENGAGEMENT AND ACADEMIC ACHIEVEMENT THROUGH THE INTEGRATION OF PROBLEM-BASED LEARNING AND DIFFERENTIATED INSTRUCTION MODELS AT SMA NEGERI 6 KABUPATEN LAMPUNG TIMUR. jeta. 2025;6(1):1-9. Accessed November 13, 2025. https://jurnal.stkippgribl.ac.id/index.php/jeta/article/view/1923