“Problem Analysis in the Development Needs of the Problem Based Learning and Discovery Learning Integrated Learning Model Tools Biology Concept Improvement of Students at SMA Negeri 1 Samarinda”. BIODIK 4, no. 1 (June 1, 2018): 26 - 35. Accessed November 15, 2024. https://online-journal.unja.ac.id/biodik/article/view/5506.