Ichsan, I. Z., Ramdani, A. S., Purwanitiningsih, E., Pertiwi, S., & Safaat, S. (2026). Student worksheets on environmental education based on project-based learning for the 4r topic in elementary school. JURNAL PENDIDIKAN DASAR, 14(1), 43–48. https://doi.org/10.46368/jpd.v14i1.5167