Students’ Errors in Solving One-Variable Linear Equations: An Analysis Based on Newman’s Theory

This study was conducted to determine the profile of students' errors when solving mathematics problems on the topic of linear equations in one variable. In this study, a descriptive qualitative approach was used. The subjects involved in this study were 33 eighth-grade students at a public junior high school in Bandung City. Data was obtained through written tests and interviews which were then analyzed based on Newman's Theory. Based on the results of the study, four types of errors were found that were frequently made by students, namely: errors in understanding the problem, errors in transforming information, errors in process skills, and errors in writing the final answer. The errors found indicate a lack of understanding of basic concepts and prerequisites so that students need to be given a stronger understanding of the concepts. In addition, students showed weak skills in working on story-based problems so it is recommended that students practice working on story problems more.