Sihombing DO, Sipahutar H. THE EFFECT OF USING FIRING LINE LEARNING MODEL TOWARD BIOLOGY LEARNING OUTCOMES OF STUDENTS ON SUB-TOPIC PLANT TISSUES. Jurnal Pelita Pendidikan [Internet]. 31 Maret 2017 [dikutip 2 Agustus 2025];5(1). Tersedia pada: https://jurnal.unimed.ac.id/2012/index.php/pelita/article/view/8440