Analysis of Introverted Students’ Error Based on Newman in Solving Arithmetic Sequences and Series Problems

Mathematics is a universal field of science and has a very important role in human life. However, facts in the field show that students’ reasoning power is still weak in the learning process of mathematics. It is because of one of the abstract characteristics of mathematics. This feature causes many students to experience errors in solving math problems. This study aims to analyze students’ errors in solving arithmetic sequences and series material based on Newman’s error analysis in grade VIII Junior High School 11 Jemberin terms of Jung’s personality type. This research is qualitative descriptive research. The subjects in this study were 3 students with introverted personality types. The instrument used in this study was to collect data comprising an MBTI questionnaire, a test regarding the arithmetic sequence and series material, an interview guide and a validation sheet. Based on the research results, introverted students make mistakes in understanding, process skills, and perform mistakes in writing the final answer.