ABSTRAK Herni, 2017. ”Meningkatkan Hasil Belajar PKn Siswa pada materi Sistem Pemerintahan Tingkat Pusat melalui Model Pembelajaran Kooperatif Numbered Head Together (NHT) di kelas IV SD Negeri18 Kendari Barat Kota Kendari”. Skripsi.S1 Pendidikan Guru Sekolah Dasar, Jurusan Ilmu Pendidikan, FKIP Universitas Halu Oleo. Pembimbing: 1) Dra. Hj.Sakka Hasan, M.Pd. dan( 2) Lisnawati Rusmin, S.Pd., M.Sc. Rumusan masalah dalam penelitian ini adalah bagaimana aktivitas mengajar guru,aktivitas belajar siswa dan hasil belajar siswa dapat ditingkatkan melalui penerapan model pembelajaran kooperatif tipe Numbered Head Together (NHT) dalam mata pelajaran PKn pada materi sistem pemerintahan pusat diKelas IV SD Negeri18 Kendari Barat Tujuan penelitian ini adalah untuk meningkatkan aktivitas mengajar guru, aktivitas belajar siswa dan hasil belajar siswa melalui penerapan model pembelajaran kooperatif tipe Numbered Head Together (NHT) dalam mata pelajaran PKn pada materi sistem pemerintahan pusat diKelas IV SD Negeri18 Kendari Barat. Jenis penelitian ini adalah penelitian tindakan kelas, yang dilaksanakan sebanyak dua siklus. Subjek penelitian ini adalah guru dan siswa kelas IV SD Negeri 18 Kendari Barat yang terdaftar pada semester genap tahun ajaran 2016/2017 dengan jumlah siswa sebanyak 20 orang, yang terdiri 14 siswa laki-laki dan 6 siswa perempuan.Data dalam penelitian ini adalah data kualitatif dan data kuantitatif. Data kualitatif diambil dengan menggunakan lembar observasi, sedangkan data kuantitatif diperoleh melalui tes siklus. Berdasarkan hasil penelitian, hasil belajar PKn siswa menunjukkan peningkatan terhadap hasil belajar siswa, aktivitas mengajar guru maupun aktivitas belajar siswa. Hasil belajar siswa mengalami peningkatan pada tiap siklusnya, dimana berdasarkan hasil tes tindakan tes siklus I diperoleh bahwa penguasaan siswa secara klasikal terhadap materi pembelajaran sebesar 60% atau sebanyak 12 siswa dari 20 siswa yang memperoleh nilai ≥70 dengan nilai rata-rata 67,15% sedangkan hasil tes tindakan siklus II penguasaan secara klasikal terhadap materi sebesar 85% atau sebanyak 17 siswa dari 20 siswa memperoleh nilai ≥70 dengan nilai rata-rata 76,25%. Peningkatan hasil belajar siswa ini dipengaruhi oleh meningkatnya aktivitas mengajar guru maupun aktivitas belajar siswa tiap siklusnya. Berdasarkan hasil observasi, diketahui bahwa aktivitas mengajar guru pada siklus I hanya mencapai persentase sebesar 76,47% meningkat pada siklus II menjadi 88,23%. Begitu pula aktivitas belajar siswa, pada siklus I persentase keaktifan hanya 69,23% meningkat pada siklus II menjadi 92,30% disimpulkan bahwa melalui penerapan model pembelajaran kooperatif tipe Numbered Head Together(NHT) dapat meningkatkan hasil belajar PKn siswa kelas IV SD Negeri 18 Kendari Barat pada materi sistem pemerintahan pusat, dengan aktivitas mengajar guru dan aktivitas belajar siswa ABSTRACT Herni, 2017. "Improving Student Civics Learning Outcomes in Central Government System Material Material through Cooperative Learning Model Numbered Head Together (NHT) in Grade IV SD Negeri18 Kendari Barat Kendari". Thesis.S1 Elementary School Teacher Education, Department of Education, FKIP Halu Oleo University. Advisor: 1) Dra. Hj.Sakka Hasan, M.Pd. And (2) Lisnawati Rusmin, S.Pd., M.Sc. The formulation of the problem in this research is how the teacher teaching activity, student learning activities and student learning outcomes can be improved through the application of cooperative learning model type Numbered Head Together (NHT) in the subject of Civics in the material of central government system in Class IV SD Negeri18 Kendari Barat. The purpose of this study is to improve teacher teaching activity, student learning activities and student learning outcomes through the application of cooperative learning model type Numbered Head Together (NHT) in the subject of Civics in the material of central government system in Class IV SD Negeri18 Kendari Barat. This type of research is a classroom action research, carried out by two cycles. The subjects of this study are teachers and fourth graders of SD Negeri 18 Elementary School which is registered in the even semester of academic year 2016/2017 with the number of students as many as 20 people, consisting of 14 male students and 6 female students. Data in this research are qualitative data And quantitative data. Qualitative data were taken using the observation sheet, while the quantitative data was obtained through the cycle test. Based on the results of the study, students' learning outcomes showed improved student learning outcomes, teacher teaching activities and student learning activities. Student learning outcomes have increased in each cycle, where based on the results of the test action cycle I obtained that the mastery of students in classical to the learning materials of 60% or as many as 12 students from 20 students who get the value of ≥70 with an average value of 67.15% While the results of the second cycle of action test mastery of the classical to the material of 85% or as many as 17 students from 20 students get the value of ≥70 with an average value of 76.25%. The improvement of students' learning outcomes is influenced by the increasing of teacher's teaching activity and student's learning activity each cycle. Based on observation result, it is known that teacher teaching activity in cycle I only reaches 76,47% percentage increase in cycle II become 88,23%. Similarly, the activity of student learning, in cycle I the percentage of activeness only 69.23% increased in cycle II to 92.30% concluded that through the implementation of cooperative learning model type Numbered Head Together (NHT) can improve learning outcomes Civics fourth grade students SD Negeri 18 Kendari Barat on central government system materials, with teacher teaching activities and student learning activities