<![CDATA[Tujuan penelitian adalah mengetahui efektivitas model guided inquiry untuk meningkatkan penguasaan KPS melalui lesson study. Penelitian dilaksanakan sebanyak 6 siklus (plan, do dan see) pada peserta didik kelas VIIIA SMP Muhammadiyah 3 Purwokerto semester gasal tahun ajaran 2016/2017. Teknik pengumpulan data menggunakan wawancara, observasi, tes. Wawancara dilakukan untuk mengumpulkan data tentang kondisi awal peserta didik. Observasi digunakan untuk menggali persentase peserta didik yang melakukan KPS, menghimpun data aspek KPS yang muncul pada setiap siklus dan keterlaksanaan sintaks model guided inquiry. Instrumen tes tertulis digunakan untuk mengukur penguasaan KPS peserta didik. Data dianalisis menggunakan analisis deskriptif kualitatif dan kuantitaif. Hasil penelitian menunjukkan peningkatan kualitas pembelajaran dari siklus 1 hingga siklus 6 dan terjadi peningkatan keterlibatan peserta didik pada aktivitas KPS secara berturut-turut adalah 43% (kurang), 56% (cukup), 61% (cukup), 52 % (cukup), 65% (cukup), dan 69% (cukup). Penguasaan KPS peserta didik menunjukkan tingkat penguasaan basic skills dalam kategori baik, process skills dan investigative skills dalam kategori kurang hingga baik. Hasil tes KPS menunjukan hasil yang baik dengan rata-rata nilai sebesar 74,5 dengan standar deviasi 7,9. Simpulan penelitian, implementasi model pembelajaran guided inquiry melalui lesson study efektif meningkatkan penguasaan KPS peserta didik kelas VIIIA SMP Muhammadiyah 3 Purwokerto.Implementation of guided inquiry model through lesson study to enhance mastery of science process skills (SPS) at SMP Muhammadiyah 3 Purwokerto. The purpose of this research is to know the effectiveness of guided inquiry model to increase SPS through lesson study. The research was conducted 6 cycles (plan, do and see) in class VIIIA students of SMP Muhammadiyah 3 Purwokerto in the academic year of 2016/2017. Technique of collecting data using interview, observation, test. Interviews were conducted to collect data about the initial condition of the learner. Observations were used to probe the percentage of students who did the SPS, collecting the SPS aspect data that appeared on each cycle and the implementation of the guided inquiry syntax. Written test instruments are used to measure students' SPS mastery. Data were analyzed using qualitative and quantitative descriptive analysis. The results of the study showed improvement of learning quality from cycle 1 to cycle 6 and increased participation of students in SPS activity were 43% (less), 56% (enough), 61% (enough), 52% (enough) 65% (enough), and 69% (enough). Mastery of SPS by student shows mastery level to basic skills (good), process skills and investigative skills (less until enough). Mastery of SPS levels with an average score of 74.5 with a standard deviation of 7.9. The conclusion of the research is that the implementation of guided inquiry learning model through lesson study is effective to improves the mastery of Science Process Skills for Students in SMP Muhammadiyah 3 Purwokerto.]]>
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