kewajiban tersebut melaksanakan Pengabdian Masyarakat, hal ini dilaksanakan berkaitan dengan kepedulian setiap lembaga atau institusi yang bergerak dibidang Pendidikan, khususnya tentang Peningkatan Kompetensi Siswa dan Guru SMK Dinamika Kota Tegal Tentang Pemanfaatan Program Komputasi Matematika Geogebra dalam rangka menguasai materi matematika, khususnya latihan soal-soal ujian Nasional dengan penyelesaian alternatif. Program komputer yang kini tersedia secara luas dan gratis di internet adalah Geogebra. Menggunakannya pun relatif mudah, sehingga hanya dengan pelatihan minimal guru dan siswa akan bisa menggunakannya. Kegiatan ini dilaksanakan dalam rangka meningkatkan pengetahuan dan kemampuan guru dan siswa dalam bidang matematika. Dari hasil kegiatan pengabdian kepada masyarakat diperoleh kesimpulan sebagai berikut : (1) Adanya peningkatan pengetahuan dan kemampuan dalam menggunakan aplikasi komputer bagi siswa khususnya tentang matematika menggunakan teknologi komputasi khususnya dengan program Geogebra; (2)Kegiatan Pelatihan Komputasi Geogebra di SMK Dinamika Kota Tegal dapat meningkatkan motivasi karena dianggap mudah dan sebagai alternatif untuk mengetahui jawaban akhir dengan benar.

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Most of Mechanical Engineering students have very low interest and motivation towards English even they regard English as huge obstacle. Besides that, it is the lack of module or material of English especially for mechanical engineering. Because of this problem, English teaching in this class needs the materials or methods which is suitable for those students therefore the student learning experience is more interesting and challenging. This is the main reason why lecturers of vocational colleges especially for mechanical engineering department is expected to always explore more motivative teaching resources, although there are many handbooks or modules include CDs. In order to learn more varied, lecturers can use English material for this department that can be taken or downloaded from Youtube. So that the students can understand and improve their English vocabulary competence related to mechanical terms. This study analyzes the effects of using material taken from Youtube in the mechanical department. Using Class Action Research consist of two cycles with stages of planning, action, observation, and reflection. Both cycles use the application of learning models by Teaching English for ESP assisted by Youtube. The result of research shows that the improvement of problem solving ability in English which is very significant that is 85,21% from 30 studenst get value ≥70 according to required minimum value.

The study aimed at describing the implementation of guided conversation at Harapan Bersama Tegal Polytechnic. The method used was a classroom action research in two cycles. The participant of the study was 30 mechanical engineering students who took English courses 2. The improvement of students' speaking fluency was 65% in the first cycle. However, it was categorised as failed because only 13 students got a minimum score of 74 or above 74. Thus, the second cycle needs to be done. In the second cycle of learning there has been a percentage increase in the results of fluency speak 20% of the average value of 65% to 85%. All in all, students' speaking fluency has been improved by the using Guided Conversationes.

By looking at the learning result of Lecturer of DIII Mechanical Engineering Department of Harapan Bersama seen the lack of understanding of the students understanding the subject matter of Applied Mathematics. The objective of the research is to produce a mathematics learning device with Think Talk Write model based on Hand On Activity to improve the valid ability of troubleshooting, practical, and effective math problem solving. This research is a development research using 4D model that is modified into 3D consists of defining, designing and developing phases. The types of devices developed are: (1) Syllabus; (2) Semester Study Plan; (3) Modules and (4) Worksheets , and (5) Troubleshooting Test. The subject of this research is the D III students of Mechanical Engineering Department. Independent variables of this research are independence and problem-solving skills, while the dependent variable is the result of Troubleshooting test. Conclusions gained (a) Students achieved mastery individually (scores above 80) as well as classical, (b) The ability of troubleshooting of Applied Mathematics in a class that uses Think Talk Write model devices based on Hand On Activity is better than the ability of class math problem solving with conventional method, (c) The existence of influence of independence character and problem solving skill to troubleshooting ability of subject Applied Mathematics equal to 90%.