The influence of interaction aptitude-treatment (ATI) learning models in improving the geography learning achievement of class XI students in Senior High School PGRI Lumajang

This study is a preexperimental study that aims to determine the improvement of geography learning outcomes of class XI Senior high School PGRI LUMAJANG in the 2016/2017 school year taught by using the AptitudeTreatment Interaction learning model. The variable studied in this study is the Aptitude-Treatment Interaction learning model as an independent variable and an increase in learning outcomes as a response variable, while the research design is "pre-test and post-test group".The subjects of this study population were all students of class XI Senior high School PGRI LUMAJANG in the 2016/2017 school year consisting of 156 people. While the sample is 28 people taken using a random class assuming that the class taken is homogeneous. The results of descriptive analysis show that the average increase in geography learning outcomes in class XI of Senior high School PGRI LUMAJANG taught by the ATI learning model in general is 19.63%. In the average high category, the increase was 18.41%, in the average medium group the increase was 16.28% and in the low group the average increase was 25.63%.he results of inferential analysis indicate that there is an increase in Geography learning outcomes in class XI students Senior high School PGRI LUMAJANG in the 2016/2017 academic year taught through learning using the Aptitude-Treatment Interaction (ATI) learning model