Abstract
The purpose of the study is to analyze the students' errors of a junior high school student in solving the Program for International Student Assessment (PISA) mathematics problem. Then, it will be analyzed that what kinds of students' errors regarding Newman's error categories, which were connected to the PISA's stage of mathematization. The Newman's error categories are comprehending a task, transforming the task into a mathematical problem, processing mathematical procedures, and interpreting or encoding the solution regarding of the real solutions. The participants were two students of junior high schools. According to the finding of this study, all of the students are making error in transformation and process skills. While the second student is also making comprehension error, no student is doing a mistake in encoding.
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