Polmer Siagian 2023. Efforts to Improve Student Learning Outcomes in the Volleyball Bottom Passing Learning Process Through the Use of the Demonstration Method in Class VIII-9 UPT SPF SMP Negeri 2 Sunggal Academic Year 2022/2023. Indonesian Journal of Educational Science and Technology. 2, 4 (Nov. 2023), 355–378. DOI:https://doi.org/10.55927/nurture.v2i4.6760.