Sagala RS, Hasibuan AZF, Hasibuan AS, Royani A, Lubis EF, Harahap N, et al. EDUCATING STUDENTS ON THE CAUSES AND CONSEQUENCES OF LITTERING AT SD N 100050 PASAR MATANGGOR USING A GROUP DISCUSSION METHOD TO ENHANCE CRITICAL THINKING SKILLS. Multidisciplinary Indonesian Center Journal [Internet]. 2026 Nov. 6 [cited 2026 Nov. 8];3(4):4947-55. Available from: https://e-jurnal.jurnalcenter.com/index.php/micjo/article/view/3134