Mathematical communication ability of senior high school students based on self-concept in geometry topics

This study aims to describe the mathematical communication skills of students with high, medium, and low self-concepts on geometry material. This research is qualitative research with a descriptive method. The subjects of this study were all students of class XII IPA. The main instrument in this study is the researcher, while the supporting tools are questionnaires, tests, and interview guidelines. Data analysis techniques used are data reduction, data presentation, and conclusion. This study found: 1) students who have high self-concept can master written text, drawing, and mathematical expressions; 2) students who have moderate self-concept only master written text and drawing; and 3) students who have low self-concept have not mastered written text, drawing, and mathematical expressions.