This study aims to determine the effect of Mind Mapping Learning Methods on student learning outcomes. The research instruments used were pretest and posttest in the form of multiple choices of 20 items. The population in this study were all students of class XI IPA 1 and XI IPA 2 in the even semester of SMA Negeri 2 Kotapinang, and the samples in this study were all 60 students. The data collection technique was carried out by means of tests. Before the research the questions were first validated including content validity, different power, difficulty index and reliability. Based on the average post-test scores in the experimental class 75.50 with the largest value of 95 the smallest value of 60 while in the control class the average value of 64.33 with the largest value of 75 the smallest value of 50, based on the calculation of learning outcomes improvement of the experimental class 50% and the control class 30% From these results it can be concluded that Ha is accepted by tcount>ttable = 337,158> 1,671 in other words there is the effect of mind mapping learning methods on student learning outcomes. Data obtained from the results of the test are then analyzed using the t test with different samples. Before the t test is carried out, the requirements test which includes normality and homogeneity tests is carried out. The results showed that there were effects of Mind Mapping Learning Methods on Student Learning Outcomes.

Keywords : Mind Mapping Learning Method, Biology Learning Outcomes.