EFFECTIVENESS OF THE USE OF MOODLE-ECLASS LEARNING MEDIA IN IPS LEARNING IN SATYA WACANA CHRISTIAN MIDDLE SCHOOL piter - pamuttu, Tri Widiarto, Sunardi Sunardi Jurnal Penelitian Pendidikan Sejarah UHO Vol. 6 No. 3 2021 DOI 10.36709/jpps.v6i3.17648