“Optimalisasi Kemampuan Problem Solving Siswa SD Melalui Pendampingan Olympiade Berbasis Masyarakat”. JISIP (Jurnal Ilmu Sosial dan Pendidikan) 3, no. 3 (December 1, 2019). Accessed July 7, 2026. https://ejournal.mandalanursa.org/index.php/JISIP/article/view/805.