SUMMARY
Tujuan dari penelitian ini adalah untuk mengetahui apakah hasil belajardan aktifitassiswa pada pokok bahasan kesetimbangan kimia yang diajar dengan Model Learning Cyclemelalui Pendekatan Penelitian Tindakan Kelas lebih baik dari sebelum diberi tindakan. Penelitian ini telah dilakukan di MAN 2 Model Medan. Populasi penelitian terdiri dari empat kelas dan secara acak diambil satu kelas sebagai sampel. Penelitian ini tidak membandingkan dua buah kelas, hanya melihat hasil awal sebelum diberi perlakuan dan sesudah diberi perlakuan. Penerapan model pembelajaran dilakukan dua siklus dengan observasi untuk mengetahui perubahan aktivitas siswa. Hasil penelitian menunjukkan model pembelajaran efektif digunakan sebagai model pembelajaran. Terdapat peningkatan hasil belajar siswa yang signifikan dari siklus I ke siklus II penerapan model pembelajaran. Hasil observasi menunjukkanminat siswa mendengarkan penjelasan guru, mengerjakan soal, mengajukan pertanyaan dan mencatatpada pokok bahasan kesetimbangan kimia meningkat. The purpose of this study was to find out whether the learning outcomes and activities on the subject matter of chemical equilibrium taught by a Learning Model Cyclone through the Classroom Action Research were better. This research was conducted in MAN 2 Medan. The population consisted of four classes and one class was randomly taken as the sample. This study did not compare two classes, but it only found out the initial results before and after the application. The application of the learning model was conducted in two cycles with observations to determine changes in students activities. The results showed that the effective learning model was used as a learning model. There was an increase in students learning outcomes which were significant from cycle I to cycle II. The observation showed that the interest of students to listening to the teacher's explanation, working on the problem, asking questions and noting on the subject of chemical equilibrium increased.