PENERAPAN PEMBELAJARAN KOOPERATIF TEKNIK STUDENT TEAMS ACHIEVEMENT DIVISIONS (STAD) UNTUK MENINGKATKAN AKTIVITAS SISWA PADA  POKOK BAHASAN KESEBANGUNAN KELAS IX-C  SMP NEGERI 143 JAKARTA

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Purwidi Sumaryanto SMP N 143 Jalan Cilincing Bakti IX No. 1, Jakarta Utara, DKI Jakarta

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