“IMPROVING LITERACY AND NUMERATION ABILITY THROUGH A CAMPUS TEACHING PROGRAM AT SD NEGERI 091640 BANDAR MASILAM, SIMALUNGUN DISTRICT”. 2023. Jurnal Pengabdian Pendidikan Masyarakat (JPPM) 4 (1): 39-46. https://doi.org/10.52060/jppm.v4i1.1023.