Dzulhikam, M., Ridlo, S. and Kusuma Dewi, N. 2020. The Effectiveness of PQ4R Learning Method in Ecosystem Materials To Improve Students’ Learning Outcomes and Reading Skills. Journal of Innovative Science Education. 9, 1 (Apr. 2020), 118 - 125. DOI:https://doi.org/10.15294/jise.v8i1.14431.