This study aims to discover the effect of applying audiovisual Powtoon media to improve the mathematical understanding ability of sixth-grade elementary school students. The research method used a one-group pretest-posttest design where this test is carried out to compare the conditions before treatment and given after treatment. This study used a random sample of 132 sixth-grade elementary school students with the Slovin formula in Cipayung District, East Jakarta, as an experimental group. The data analysis techniques used in this research are the normality, homogeneity, and Kolmogorov-Smirnov tests. Based on the results of the paired sample t-test, it is known that the significance value is 0.00 < 0.05, then Ho is rejected, and Ha is accepted. It can be concluded that using audiovisual Powtoon media affects students' mathematical understanding in grade 6 at Elementary School in the Cipayung district, East Jakarta in Indonesia. © 2025 American Institute of Physics Inc.. All rights reserved.