“PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK (LKPD) BERBASIS PROBLEM BASED LEARNING (PBL) MATERI PECAHAN DI KELAS V SD NEGERI 107418 BANGUN SARI BARU” (2023) JOURNAL OF SCIENCE AND SOCIAL RESEARCH, 6(3), pp. 880–886. doi:10.54314/jssr.v6i3.2126.