Abstract
The method used was Classroom Action Research in 2 implementation cycles on class XI students at SMKN 1 Monterado, using discussion and question and answer methods in problem solving of real problems encountered.
Based on the research results, it was found that the problem-based learning system by applying the discussion and question and answer method, was felt to be quite effective and could improve learning outcomes, find the source of problems, analyze the sources of problems and attempt to solve problems encountered and Critical Reasoning. For this reason, this method is very suitable to be applied to arouse students' enthusiasm for learning and bring out students' creativity in learning.