Pengaruh Kegiatan Ekstrakurikuler Terhadap Prestasi Belajar Matematika Siswa Kelas VII

   Kata Kunci : Kegiatan Ekstrakulikuler, dan Prestasi Belajar Matematika Abstract. This study aims to determine how much influence the extracurricular activities in mathematics learning have on mathematics learning achievement for seventh grade students. The population in this study were all grade VII students of SMP Negeri 10 Kotabumi 3 classes with a total of 105 students. A sample of 1 class with a total of 35 students was taken by cluster random sampling technique. By drawing the class and obtained class VII E as a sample class. The data collection technique was used a questionnaire method to determine extracurricular activities and test methods to determine students' mathematics learning achievements, to test the instrument the analysis requirements test is performed which includes the normality test for the independence test and the linearity test for data analysis to test the hypothesis using multiple linear regression analysis. The results showed a positive and significant effect between extracurricular activities on mathematics learning achievement  t t hitung and a correlation coefficient of 0.355 with a simple ˆ X Y   with an effective contribution of 19.11% relative contribution of 8.60%. The initial ability and extracurricular activities 95,0(    F F hitung