This study aims to see the effectiveness of the use of mathematical pyramid media in learning media courses to improve the academic achievement of fourth semester students of the Mathematics Education Study Program, FKIP UNA, Academic Year 2019/2020. The sample of this research is two classes, namely class IVA (experimental class) and class IVB (control class). The pretest mean value of the experimental class (64.82) with the highest value of 82 and the lowest score of 46, the pretest value of the control class (61.48) with the highest value of 78 with the lowest score of 42. From the pretest homogeneity test there was no difference in variance or the two samples homogeneous where Fcount <Ftable (1.86). From the pretest data normality test, it was obtained that L0 for the experimental class (0.1274) and L0 for the control class (0.117). For post-test data, it is obtained L0 for the experimental class (0.1587) and L0 for the control class (0.1082). The value of L0 is smaller than L table (0.161) so it can be concluded that the data is normally distributed. The average post-test score of the experimental class (87.9) with the highest score of 90 and the lowest score of 63, while for the control class the average post-test score (80.6) with the highest score of 90 and the lowest score of 54. = 2.11> ttabel = 2.01 which means that Ha is accepted. Keywords: Mathematics pyramid media; academic achievement; learning media

The purpose of this study was to determine the reasoning ability of students in solving the problem of summing up the AL-Mudzakir Kisaran Integrated PAUD students. This research method is descriptive qualitative. The subjects in this study were 21 students of the Integrated PAUD Al-Mudzakir Kisaran. The data collection technique used is a test designed in the calculate your path media. The results of data analysis showed that the category of students as much as 15.4%, the reasoning ability of students in the medium category there were 14. students as many as 65.6%, the reasoning ability of students in the low category there were 4 students as much as 19%. From the data analysis, the percentage of the average value of the achievement of students' reasoning abilities is 61%. so it can be concluded that the reasoning ability of Al-Mudzakir Integrated PAUD students is in the medium category.