PENERAPAN MODEL PENGAJARAN LANGSUNG DENGAN STRATEGI MIND MAPPING PADA MATERI REAKSI OKSIDASI REDUKSI DI KELAS X SMA NEGERI 17 SURABAYA (IMPLEMENTATION OF DIRECT TEACHING MODEL WITH MIND MAPPING STRATEGY ON REDUCTION OXIDATION REACTION MATTER IN CLASS X SMA NEGERI 17 SURABAYA) - PRATIKNO, PUTRI (UNESA Journal of Chemical Education, 2014)