Increased understanding of the concept of straight line equations by using GeoGebra

The most crucial part of the process of learning mathematics is the understanding of concepts. However, there are still students who have a common understanding of mathematical concepts, especially in the material of straight-line equations. The common understanding of student concepts in the material of straight-line equations results in student learning outcomes not reaching learning completeness criteria. One of the efforts that will be made to improve students’ understanding of concepts in the Straight Line Equation material is to utilize GeoGebra media. This article aims to determine the influence of GeoGebra media’s use in improving students’ understanding of concepts on the material of straight-line equations. This type of research is based on a quantitative approach with its research design, Classroom Action Research (CAR). The study subjects were 16 grade VIII students of Muhammadiyah 10 Andong JHS for the 2021/2022 academic year. This research uses data collection techniques and instruments in the form of Test Techniques and descriptive statistical analysis to describe the test of learning outcomes and student activities in the learning process using GeoGebra.