Research problem the environment-based learning approach has not been applied in learning geography for students of SMA Negeri 2 Tondano Minahasa. The purpose of the study was to determine the effectiveness of the application of environment-based learning in improving student learning outcomes at SMA Negeri 2 Tondano. The research method used is descriptive development aimed to develop learning models. The sampling technique in this study was purposive, the sample was determined by 30 students. The calculation result shows that there are 28 students or 93.3% participants of the learning program, classified in the mastery level ≥ 70 or Success category, and 2 students or 6.7% of students who get mastery ≤ 70 which is declared Not Successful (BB). The results of these calculations indicate most of the students participating in the program were declared successful in conducting environment-based learning activities. This means environment-based learning is effective in improving student learning outcomes at SMA N. 2 Tondano in geography learning.