Firdaus, F., Subchan, W. and Narulita, E. 2020. Developing STEM-based TGT learning model to improve students’ process skills. JPBI (Jurnal Pendidikan Biologi Indonesia) . 6, 3 (Nov. 2020), 413–422. DOI:https://doi.org/10.22219/jpbi.v6i3.12249.