Apriana, D., Wardhani, S. and Haryadi, H. 2019. Implementation of Discovery Learning Models to Improve Student Learning Outcomes on Additive Materials and Addicitive Substances Topic in 8th Grade As Shiddiqiyah Junior High School. BIODIK. 5, 1 (Jun. 2019), 20-30. DOI:https://doi.org/10.22437/bio.v5i1.6390.