MELATIHKAN KETERAMPILAN METAKOGNITIF SISWA MENGGUNAKAN MODEL PEMBELAJARAN KOOPERATIF TIPE THINK-PAIR-SHARE (TPS) PADA MATERI LARUTAN PENYANGGA KELAS XI SMA NEGERI KESAMBEN (TRAIN METACOGNITIVE SKILLS OF THE STUDENTS USING COOPERATIVE LEARNING MODEL IN THINK-PAIR-SHARE (TPS) TYPE TO BUFFER SOLUTIONS MATERIALS IN XI CLASS OF KESAMBEN STATE SENIOR HIGH SCHOOL) - RIZKI NURAINI FATCHA, AMALIA (Universitas Negeri Surabaya, 2016)