Realistic mathematics education approach to enhance mathematical reasoning and mathematical representation of junior high school students

The aim of this study was to determine the improvement of mathematical reasoning and mathematical representation skills through the RME approach for students in one of the junior high schools in Sukoharjo, Central Java. This type of research is Classroom Action Research (CAR). The subjects of this study were students of class VIII E, SMP N 1 Mojolaban which amounted to 31 students. Data collection methods were carried out through observation and test methods. Data analysis techniques use methods that include data collection, data reduction, data presentation, and conclusion drawing. Based on the results of classroom action research that has been conducted during the study, it can be concluded that there is a significant increase in mathematical reasoning and mathematical representation of junior high school students in learning activities using RME approach on System of Two Variable Equations material at SMP N 1 Mojolaban. This is evident based on the results of observations of the test results of mathematical reasoning increased by 32.25%, while the ability of mathematical representation of students the percentage of students increased by 34.33%. This shows that students look more active and excited in participating in learning, cooperation in groups is getting better, more courage to ask questions.