Analysis of Student Errors in Solving Trigonometry Story Problems Based on Newman's Theory

Abstract

This research aims to analyze the types of errors and factors that cause errors made by students in solving trigonometry story problems based on Newman's theory. This study uses phenomenology as the research method. The subjects in this research were class X-2 students at SMKS Kitri Bakti for the 2023/2024 academic year, totaling 20 students. This research was conducted using a qualitative descriptive method. The research instrument is a description of 5 items that have been validated. The data collection techniques used were written tests, interviews and documentation. The results of the research that has been carried out show that the percentage of errors made by students in solving trigonometry story problems based on Newman's theory is: (1) Understanding errors made by students is 70%, (2) Transformation errors are 78%, (3) Process skill errors are 78%. 80%, (4) Errors in writing final answers were 75%. The percentage of students' total errors was 60.6%. The factors that cause student errors are that students are unable to write down the information contained in the problem, do not know the mathematical model, are in a hurry when solving the problem, and forget to write the final answer because they are in a hurry.