The aim of this research is to: (1) develop an assessment for learning (AFL), and (2) verify the effectiveness of the AFL through lesson study approach on machining practice in SMK. The research was a research and development with Borg & Gall’s modified R&D model which comprised of 3 phase: development, small scale test, and large scale test. The research subjects were the students and teachers of machining program at SMK 2 Depok Sleman. Data were collected through interviews, documentation, questionnaire, notes, observation sheet, assessment sheet, and students’ response. The descriptive analysis technique was used to analyze the data using rating methods. Results of the research show: (1) an assessment for learning through lesson study approach was successfully developed which consists of the assessment process and the product. Results of the assessment informs about students’ processes in practice learning, product quality and overall practice results to determine students’ achievement and also serves as formative feedback; (2) the effectiveness of the assessment, which was reviewed for eligibility, was categorized as "very good", whereas from the reliability it was in "good" category. The effectiveness was rated "very good" for its reliability. The implementation was in “good” category with 76.58% implementation and students’ response were good. Penelitian ini bertujuan untuk: (1) pengembangan perangkat assessment for learning, (2) menguji keefektifan perangkat assessmen for learning melalui pendekatan lesson study pada pembelajaran praktik pemesinan. Penelitian pengembangan ini menggunakan modifikasi model Borg & Gall yang terbagi menjadi 3 tahap yaitu: pengembangan, tahap ujicoba terbatas, dan tahap ujicoba diperluas. Subjek penelitian adalah siswa dan guru teknik pemesinan SMK Negeri 2 Depok Sleman. Pengumpulan data menggunakan wawancara, dokumentasi, angket kuesioner, catatan lapangan, lembar pengamatan, lembar penilaian produk serta respon siswa. Teknik analisis data menggunakan analisis deskriptif dengan metode rating. Hasil penelitian menunjukkan bahwa: (1) perangkat penilaian assessment for learning melalui pendekatan lesson study berhasil dikembangkan berupa perangkat penilaian proses dan produk. Informasi hasil penilaian yaitu informasi akurat proses kerja siswa, kualitas produk serta hasil keseluruhan penilaian praktik untuk mengetahui capaian belajar siswa dan sebagai formatif feedback; (2) efektifitas perangkat ditinjau dari keberfungsian mempunyai hasil penilaian “sangat baik” dan untuk reliabilitas “baik”. Keefektifan perangkat masuk kategori “sangat baik” ditinjau dari hasil penilaian dan reliabilitasnya. Tingkat keterlaksanakan masuk kategori “baik” dengan persentase keterlaksanaan 76,58% dengan respon baik dari siswa.

The applying curriculum in Indonesia is currently the 2013 Curriculum that has been used at all levels of education (The Regulation of the Minister of Education and Culture of the Republic of Indonesia No. 60 of 2014). The purpose of the 2013 Curriculum in general is to prepare Indonesian people to have the ability to live as individuals and citizens who are faithful, productive, creative, innovative, and affective and contribute to the lives of the society, nation, and world civilization (Mulyasa, 2013: 7). Regarding these changes, the implementation of the 2013 Curriculum in Vocational High Schools (VHSs) uses the scientific approach (The regulation of the Minister of Education and Culture of the Republic of Indonesia No. 103 of 2014). In addition, it has been understood that the implementation of learning itself can serve as thecrucialaspect in assessing the success of learning. Because no matter how good the curriculum is made, unless the teacher properly carries out the learning in accordance with the existing curriculum, the curriculum will not run well. This is because the curriculum and its learning process are two inseparable things even though they are in different positions.

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 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.

This study aims to describe the implementation, obstacles and benefits of peer teaching methods in machining practice frais course. The method was a descriptive qualitative. The population comprised of semester 1 students of Study Program of Mechanical Engineering Education Faculty of Engineering UNY. Data were collected by observation and interview. Data analysis used interactive model. The results show that this implementation works well with several benefits and obstacles. Benefits: 1) Improving discussion habits and exchanging knowledge to improve learning activities. 2) Provide an active learning experience. 3) Accelerate machining frais competence for high school graduate students. 4) Strengthening machining frais competence for vocational graduate students. 5) Improving students' enthusiasm, teamwork and confidence to do frais work. Obstacles: 1) introductory theory explanation was less conducive because students are listening while standing. 2) WPS discussion during the learning process reduces the practice time allocation. 3) Some students did not use glasses as a safety tool.