This study aims to obtained description of the ability of prospective mathematics teachers in applying scientific approaches to learning activities in the classroom. This research is a qualitative descriptive study. The participants research were prospective mathematics teacher (PPL teachers) interns at SMP Negeri 2 Jember. Data collection techniques used were questionnaires, interviews, observation, and the results of supervision at the practical examination. Data analysis techniques in this study using a checklist and flow analysis model of Miles and Huberman. The results showed that: (1) PPL teachers' understanding of the learning model through a scientific approach gained 28.57% in the category is can and as much as 71.43% in the category is quite capable; (2) the ability of PPL teachers in preparing the learning device in accordance with the curriculum structure in 2013 gained as much as 100% in the category is capable; (3) the ability of PPL teachers in implementing the learning activities using scientific approaches gained as much as 57.14% in the category is can and as much as 42.86% in the category is quite capable; (4) the ability of PPL teachers formulate and implement authentic assessment gained 28.57% in the category is can and as much as 71.43% in the category is quite capable; (5) PPL students' response to the teacher during teaching (internship) gained as much as 42.86% in the category is accordance with the characteristics of students as a teacher of mathematics and as much as 57.14% in the category is according to the characteristics of students as a teacher of mathematics. While the barriers experienced by teachers PPL is the lack of experience in implementing the scientific approach to learning, especially on the activities of questioning and reasoning, the allocation of time, and still difficulties in conducting assessments based the Curriculum 2013.