Application of scientific approaches to improve the mastery of the concept and motivation of learning students at SDN Pegirian II/495 Surabaya. Research respondent is grade IV student at SDN Pegirian II/495 Surabaya. This research is an experimental quasi research with the design of research used is a Nonequivalent control group design. Data collection is conducted with pretests and posttest for motivation and mastery of concept and student response questionnaire to scientific approaches. The results showed that the average execution of the average score in the control class was 3.5 with a percentage of 87.5% and in experimental classes obtained 3.63 with a percentage of 90.8%. The average value of an experimental group posttest was 83.3, while the average value of the Posttest control group was 74.6. The average outcome of motivational learning data in the experimental group showed an increase in student learning motivation of 16.1. Whereas the average student motivation data study in the control group showed an increase in student learning motivation of 9.2. Research results were analyzed using SPSS progam Test assisted Independent test, Demonstrate that there is an influence that the mastery and motivation of learning students in the experimental class of the control class. From the student response poll gives positive response to the implementation of the scientific- short learning model. It is concluded that learning with a scientific approach can improve the motivation and mastery of students ' concepts.

Keywords : Methods of the Scientific Pendexthane, Mastery of Concepts, Motivation to Learn Students.