“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): 880-86. https://doi.org/10.54314/jssr.v6i3.2126.