1.
Siregar RE, Manurung B. IMPROVEMENT OF STUDENT LEARNING ACTIVITY AND LEARNING OUTCOMES BY USING PROBLEM-BASED LEARNING MODEL ON HUMAN REPRODUCTIVE SYSTEM TOPIC IN GRADE XI IPA 4 AT SMAN 2 SOPOSURUNG BALIGE. Jurnal Pelita Pendidikan [Internet]. 1 September 2016 [dikutip 3 Juli 2025];4(3). Tersedia pada: https://jurnal.unimed.ac.id/2012/index.php/pelita/article/view/6618