Harahap AS, Mustika D. Penerapan Pembelajaran IPA di Alam Terbuka Kelas IV SD Negeri 0702 Panyabungan . Joecy Journal [Internet]. 2025 Jul. 10 [cited 2026 Oct. 16];5(2):12157-64. Available from: https://joecy.org/index.php/joecy/article/view/1863