Analysis introduction of the development of mathematics learning device based of professional competency in electrical engineering programs vocational high school class X

Based on preliminary research in SMKN 1 Koto Balingka and SMKN 1 Lembah Melintang obtained information that student's math problem solving ability are still low. One of the contributing factors is that the mathematics learning device has not facilitated students to improve their math problem solving skills and students assumptions that mathemathics is not important to learn because it is not related to student's expertise program. It become the basis for developing learning tools like RPP and LKPD based on expertise competency in the electricity engineering expertise program for students of SMK class X. The electricity engineering expertise program was choosen in this study because there was no math learning device that is in accordance with the electricity expertise program. The preliminary analysis phase is carried out by observation, interview with teachers and students and tests of math problem solving skills. The reseach subjects were grade X of SMKN 1 Koto Balingka. The type of reasearch is development reasearch using PLOMP models that consist of preliminary research, in the form of needs analysis, curriculum analysis, concept analysis and analysis of students.