PENINGKATAN AKTIVITAS BELAJAR PAK MELALUI MODEL PEMBELAJARAN PROBLEM SOLVING PADA SISWA KELAS IX-B SMPK BETHEL JAKARTA-PUSAT . Edukasi : Jurnal Pendidikan Agama Kristen, [S. l.], v. 11, n. 1, p. 31–38, 2020. DOI: 10.47562/edk.v11i1.139. Disponível em: https://sttbi.ac.id/journal/index.php/edukasi/article/view/139. Acesso em: 31 jul. 2026.