PENGEMBANGAN LEMBAR KEGIATAN SISWA BERORIENTASI LEARNING CYCLE 7-E PADA MATERI POKOK LAJU REAKSI UNTUK MELATIHKAN KETERAMPILAN PROSES SAINS (HE DEVELOPMENT OF STUDENT ACTIVITY WITH LEARNING CYCLE 7-E ORIENTATION IN MAIN MATTER OF RATE REACTION TO TRAIN SCIENCE PROCESS SKILLS) - ROFIAH, FARIDATUR (UNESA Journal of Chemical Education, 2014)