Pengembangan LKPD IPAS Berbasis Contextual Teaching and Learning (CTL) pada Materi Ekosistem Kelas V Sekolah Dasar. jipipi [Internet]. 2026 Sep. 2 [cited 2026 Sep. 18];3(2):559-70. Available from: https://jipipi.org/index.php/jipipi/article/view/181