“Training of Visual Media Based on Natural Materials as a Learning Facility for Independent Learning at Sdn Kupang 4 Sidoarjo: Pelatihan Media Visual Berbasis Bahan Alam Sebagai Fasilitas Pembelajaran Merdeka Belajar di SDN Kupang 4 Sidoarjo” (2022) Procedia of Social Sciences and Humanities, 3, pp. 611–615. doi:10.21070/pssh.v3i.206.