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Silaban, P. J. (2019) “EFEKTIVITAS PEMBELAJARAN MELALUI PEMBELAJARAN KOOPERATIF TIPE TGT BERBANTUAN ALAT PERAGA DI KELAS VI SD METHODIST-12 MEDAN PADA KOMPETENSI DASAR LUAS BANGUN DATAR SEDERHANA”, Jurnal Ilmiah Aquinas, 2(2), pp. 175–199. doi: 10.54367/aquinas.v2i2.548.