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This research aims to examine the demonstration method on chemistry learning through colloid materials to learning achievement and interest of students at class XI Science of SMA Negeri 1 Kasimbar. This research was true experimental design with pretest-posttest control grup design. Sampling was carried out based on special considerations (proporsive sampling) with 21 students in class XI science 2 as sample of experimental class and 21 student of class XI science 1 as control class. This research instruments were learning achievement test and quetionnaire. Data was analyzed through descriptive statistical analysis, namely test questionnaire data, as well as inferential statistical analysis to test the hypotesis using two-party t-test. Analysis of questionnaire data of students’ learning interests showed that the experimental class was in the agree category with percentage of 78.05% while the control class was in the agree category with a percentage of 60.63%. Therefore, it can be concluded that demonstration method in chemistry learning on colloidal material affect learning achievement learning interest of students class XI Science of SMA Negeri 1 Kasimbar.

Implementation of Demonstration Method to Students Learning Outcomes and Interests on Colloid Materials at Class XI Science of SMA Negeri 1 Kasimbar