This study aims to improve the attitude of discipline and student performance learning outcomes in Lathe Machining Techniques by using Project Based Learning (PjBL) in class XII TPM-D students Machining Engineering Skills Competencies State Vocational School 2 Surakarta even semester 2019/2020 school year. The research procedure used is Classroom Action Research procedures. Project-based learning (PjBL) can improve student discipline in Lathe Machining Techniques for students of class XII TPM-D State Vocational School 2 Surakarta even semester 2019/2020 school year from the initial conditions by 34.29% increase in cycle 2 to 100% increasing by 65.71%. Through the learning method, Project Based Learning (PjBL) can improve student performance learning outcomes n Lathe Machining Techniques for students of class XII TPM-D State Vocational School 2 Surakarta even semester 2019/2020 school year from the initial condition of a 20% increase in cycle 2 to 100% increasing by 80%.
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