Safri, Zainal, Siti Hasanah, Mahmudah, Fitri Soraya, and Tuti Sriwahyuni Siregar. 2024. “Implementation of Contextual Teaching and Learning Model in Nature-Based Learning to Improve Morals and Concern for the School Environment at SMP S Alam Leuser”. Jurnal Profesi Guru Indonesia 1 (4):162-69. https://doi.org/10.62945/jpgi.v1i4.636.