[1]
R. E. Siregar dan B. Manurung, “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, vol. 4, no. 3, Sep 2016.