Efforts to Improve Learning Outcomes passing Down Volleyball Variations Through Learning and Modified Ball On Private Junior High School eighth grade students Perbaungan Satria Dharma School Year 2019/2020: Efforts to Improve Learning Outcomes passing Down Volleyball Variations Through Learning and Modified Ball On Private Junior High School eighth grade students Perbaungan Satria Dharma School Year 2019/2020 - M, Benny Aprial (Institute Of Computer Science (IOCS), 2019)