<![CDATA[The learning process that takes place in schools is less attention to argumentation skill. Skill argumentation can encourage students to think hard to form conceptual reasoning. This study aimed to: (1) know the influence of argument skills, and (2) to know the improvement of learning outcomes. This experimental research was conducted on students of class VIIIB Junior High School 1 Labuhan Maringgai in Academic Year of 2015/2016 used Minimal Control research design. The research steps included preliminary stage, development stage, test phase and analysis using paired sample t-test and stage of value taking. Learning tool was developed using problem based learning model as argument generator model. The results of this study indicated that: (1) there is a positive linear influence and significant argumentation skill to the learning result of 34.6%; (2) there was a significant increase of student learning result with high N-gain category of 76.5%, medium equal to 23.5% and low 0%.Proses pembelajaran yang berlangsung di sekolah kurang memperhatikan skill argumentasi. Skill argumentasi mampu mendorong siswa berpikir keras membentuk penalaran konsep. Penelitian ini bertujuan untuk: (1) mengetahui pengaruh skill argumentasi, dan (2) mengetahui peningkatan hasil belajar. Penelitian eksperimen ini dilakukan terhadap siswa kelas VIIIB SMP N 1 Labuhan Maringgai Tahun Ajaran 2015/2016 dengan menggunakan desain penelitian Minimal Control. Langkah penelitian meliputi tahap pendahuluan, tahap pengembangan, tahap uji coba dan analisis menggunakan paired sample t-test dan tahap pengambilan nilai. Perangkat pembelajaran dikembangkan menggunakan model pembelajaran problem based learning sebagai model pembangkit argumen. Hasil penelitian ini menunjukkan bahwa: (1) terdapat pengaruh linier yang positif dan signifikan skill argumentasi terhadap hasil belajar sebesar 34,6%; (2) terjadi peningkatan yang signifikan hasil belajar siswa dengan kategori N-gain tinggi sebesar 76,5%, sedang sebesar 23,5% dan rendah 0%.Kata kunci: hasil belajar, problem based learning, dan skill argumentasi]]>
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