This study aims to improve the learning outcomes of cognitive aspects among X grade students of Metal Fabrication Engineering and Manufacturing, Vocational High School (VHS) using Problem-Based Learning (PBL) method. This study used classroom action research, which was conducted in two cycles. Each cycle consisted of four stages, i.e. planning, implementation, observation, and reflection. This study involved one collaborator to assist researchers in implementing PBL and to monitor the learning process. The data collection technique used observation method with checklist and rating scale instrument. The data were analyzed descriptively. The reserach results showed that the implementation of PBL method in ignition system learning improve the students' learning activities with the percentage of 11.20%, the learning activities, in which 29 students was in very high category and 3 students with high category. Also, the learning outcomes of cognitive aspects getting higher amounted to 5.32% consisting of remembering (86.87%), understanding (77.68%), applying (78.77%), analyzing (79.61%), evaluation (77.97%), and creating (79.16%) respectively. Moreover, the students' learning outcomes rised of which 29 students (91.31%) achieved above the minimum completeness criteria.

This study aims to improve students' learning activeness and cognitive-learning outcomes using Problem-Based Learning (PBL) on the 2013 Curriculum. The research was a two-cycle action research, conducted in an oxygen-acetylene welding (OAW) practice of SMK Teknik Fabrikasi Logam. There were four stages in each cycle, namely planning, implementation, observation, and reflection. Data were collected by means of observations using checklists and rating-scale instruments and were analyzed descriptively. The result of PBL implementation show that: (1) students’ activeness is improved by 11.20%; (2) students’ cognitive-learning outcomes is improved by 5.32%. The cognitive outcomes improvement can be broken down into memorization (86.97%), comprehension (77.68%), application (78.77%), analysis (79.61%), evaluation (77.97%) and synthesis (79.16%); (3) the percentages of students who passed the minimum mastery criteria on the cognitive aspects is 91.31%; and (4) PBL is in line with the scientific approach of the 2013 CurriculumPenelitian ini bertujuan untuk meningkatkan aktivitas pembelajaran dan kemampuan hasil belajar kognitif siswa SMK Teknik Fabrikasi Logam pada pembelajaran las oksi-asetillin dengan menggunakan metode Problem-Based Learning (PBL) sesuai Kurikulum 2013. Metode penelitian menggunakan penelitian tindakan kelas yang dilaksanakan dalam dua siklus. Setiap siklus terdiri dari empat tahapan: perencanaan, pelaksanaan, pengamatan, dan refleksi. Pengumpulan data menggunakan metode observasi dengan instrumen checklist dan rating scale. Data dianalisis secara deskriptif. Hasil penelitian menunjukkan bahwa: 1) penerapan metode PBL pada pembelajaran Las Oksi Asetilin dapat meningkatkan aktivitas pembelajaran siswa sebesar 11,20%; 2) peningkatan hasil belajar aspek kognitif setelah menerapkan metode PBL adalah sebesar 5,32% dengan tingkat capaian kemampuan aspek kognitif sebagai berikut: mengingat 86,87%; memahami 77,68%; menerapkan 78,77%; menganalisa 79,61%; menilai 77,97%; dan mencipta 79,16%; 3) siswa yang mencapai Kriteria Ketuntasan Minimal pada hasil belajar aspek kognitif setelah menerapkan metode PBL sebesar 91,31%; dan 4) Metode PBL selaras dengan pendekatan saintifik pada Kurikulum 2013.

This study aims at improving learning activities and learning outcomes of cognitive aspects among X grade students of Metal Fabrication Engineering and Manufacturing, Vocational High School (VHS) using Problem-Based Learning (PBL) method. This study used classroom action research, which was conducted in two cycles. Each cycle consisted of four stages, i.e. planning, implementation, observation, and reflection. This study involved one collaborator to assist researchers in implementing PBL and to monitor the learning process. The data collection technique used observation method with checklist and rating scale instrument. The data were analyzed descriptively. The results showed that the PBL implementation method in ignition system learning improve the students’ learning activities with the percentage of 11.20%, the learning activities, in which 29 students were in very high category and 3 students with high category. Also, the learning outcomes of cognitive aspects getting higher to 5.32% consisting of remembering (86.87%), understanding (77.68%), applying (78.77%), analyzing (79.61%), evaluation (77.97%), and creating (79.16%) respectively. Moreover, the students’ learning outcomes raised of which 29 students (91.31%) achieved above the minimum completeness criteria. It means that the PBL model can be used by vocational high teachers as alternative learning process to improve their outcomes of the cognitive aspects.

This study aims to improve the learning activity and psychomotor ability of Vocational High School (SMK) students in Metal Fabrication Technique on oxyacetillin welding study by using Problem-Based Learning (PBL) method according to Curriculum 2013. The research method uses action research research in two cycles, while each cycle consists of four stages: planning, execution, observation, and reflection. Data was collected using observation method with checklist instrument and rating scale while data was analyzed descriptively. The results showed as follows: 1) the application of PBL method on the learning of Oksi Asetilin Laser can increase student learning activity by 11,20%; 2) improvement of learning result of psychomotor aspect after applying Problem Based Learning by 20,20% with psychomotor aspect ability level that is work preparation and use of tool, systematics and work method, work result, work attitude and speed of doing work (time); 3) after the application of PBL the number of students who reached the Minimum Exhaustiveness Criteria (KKM) on the cognitive aspect learning outcome of 91.31%; and 4) Problem Based Learning is aligned with the scientific approach of the Curriculum 2013.