Analysis problem solving about contextual problem of algebraic in junior high school

Abstract

Problem-solving is an important ability that everyone must have. Especially the ability to solve problems related to everyday life. Contextual problems can train students to solve problems in the real world or everyday life using the knowledge they have. This study is a descriptive qualitative. The research subjects were 20 seventh grade students of Junior High School 16 Surakarta. This study aims to analyze and describe students' mathematical problem-solving abilities about contextual problems of algebraic. Analysis of mathematical problem-solving abilities in this study used Newman's theory. Newman procedure includes reading errors, comprehension errors, transformation errors, process skills errors, and encoding errors. The data were taken using test and interview methods. Test of problem-solving abilities in the form of contextual questions regarding algebraic. The results showed students' success in reading errors was enough (42.78%), students' success in comprehension errors was low (21.11%), students' success in transformation errors was low (6.67%), students' success in process skills errors was low (38.33%), and students' success in encoding errors was low (25.56%). Most students made transformation errors because they could not write mathematical models correctly from the contextual problems given.