The 2013 Curriculum emphasizes on active learning pattern. However, based on the questionnaire spread in junior high school 18 Padang, it was gotten the result that teachers still have difficulty in implementing it, especially in affective competence of confidence. The affective competence of confidence will encourage students to be active in learning process, both in asking questions and expressing opinion. In cooperative learning, students are provided a vehicle to increase their confidence through presenting their discussion result in front of the class. By considering this issue, there is an alternative solution that can be used by teacher, which is example non example method. This method is one of cooperative learning method. Besides that, it can support the implementation of scientific approach and discovery learning model in learning process. The scientific approach and discovery learning model are the approach and model recommended in the 2013 Curriculum. Purpose of the research was to know effect of example non example method in scientific approach and discovery learning model on students' affective competence. It was a quasi-experimental research. It was done in junior high school 18 Padang to grade VII students. The instrument used was written test in form of multiple-choice and essay. Technique of data analysis used Mann Whitney U test. It was done by using SPSS software. The finding shows that example non example method in scientific approach and discovery learning model has significant effect on students' affective competence, with sig. value (0.036) < 0.05.