PROFILE OF MATHEMATICAL COMMUNICATION SKILLS OF CLASS VIII MTS AL-KHAIRAAT TONDO STUDENTS ON RELATION AND FUNCTION MATERIAL IN TERMS OF SELF-CONFIDENCE

This research is a descriptive qualitative research with the subject of the research VIII grade students of MTs Al-Khairaat Tondo. The purpose of this study was to obtain an overview of the mathematical communication skills of class VIII A students on the material of relations and functions based on self-confidence. The subjects of this study were selected based on self-confidence questionnaire. The subjects of this study were 3 students from 17 students of class VIII A MTs Al-khairaat Tondo, each of whom had high, medium and low self-confidence. Data was collected using questionnaire, written test and interview methods. The data analysis techniques used are data condensation, data presentation and conclusion drawing. The results showed that high self-confidence subjects fulfilled three indicators, namely 1) expressing situations, images, or diagrams into mathematical language, symbols, or ideas/ideas appropriately both orally and in writing; 2) using mathematical representations (diagrams, graphs) to express mathematical information 3) communicating answer conclusions both orally and in writing. Moderate self-confidence subjects fulfilled two indicators, namely 1) expressing situations, images, or diagrams into mathematical language, symbols, or ideas/ideas appropriately both orally and in writing; 2) using mathematical representations (diagrams, graphs) to express mathematical information. Low self-confidence subjects fulfilled one indicator, namely 1) using mathematical representations to express mathematical information.


INTRODUCTION
Mathematics is a subject that is always found at every level of education, be it in elementary school, middle school or college.This is in line with what was stated by Naimah Prima: Jurnal Pendidikan Matematika ◼ 237

Profile Of Mathematical Communication Skills Of Class VIII Mts Al-Khairaat Tondo Students On Relation And Function
Material In Terms Of Self-Confidence Amelia, Alfisyahra, Lefrida, Pathuddin et al., (2022) that mathematics is a subject studied at all levels of education, from elementary school to high school and even college.Mathematics consists of many branches such as algebra, calculus to geometry.Of the many branches of mathematics, to be able to solve problems in everyday life, students must have good mathematical skills (Ulya et al., 2019) Students must have several abilities in learning mathematics, one of which is mathematical communication skills.Mathematical communication skills are students' ability to express mathematical ideas orally or in writing using mathematical language in the form of graphs, diagrams or tables (Widiyanto & Yunianta, 2021).According to the National Council Teachers Of Mathematics (2000) states that mathematical communication skills are the ability to organize mathematical thoughts, communicate mathematical ideas logically and clearly to others, analyze and evaluate mathematical thoughts and strategies used by others, and use mathematical language to express ideas appropriately.
Mathematical communication skills are very important to cultivate because they can encourage students to be actively involved in learning and eliminate the thought that mathematics is a difficult and scary subject (Kusuma & Manoy, 2022).Learners need to be aware of the importance of mathematical communication skills, as strong communication skills can ensure that students succeed in mathematics.Having good mathematical communication skills will be advantageous for all aspects of learning, this can help students become more logical thinkers and better communicators (Tong et al., 2021).
Mathematics subjects in class VIII odd semesters contain material about relations and functions.A relation is a relationship between a set called a domain and another set called a codomain.While a function is a set that is paired with exactly one member on another set.
Every function is a relation, but not all relationships are functions.To express relations and functions can use arrows and cartesian coordinates.
Previous research relevant to this study is research conducted by Sunaryo et al. (2022) in class XI IPA in one of the schools in Ciamis.The study described that students with high self-confidence ability fulfilled all indicators of mathematical communication ability shown from test and interview results.In students with moderate self-confidence ability, the subject can only fulfil two indicators.Then students with low self-confidence ability only fulfilled one indicator.From the results of the study, it can be concluded that the higher the self-confidence, the higher the mathematical communication ability.
Mathematical communication skills are influenced by several things, one of which is self-confidence.This is in line with what was stated by Muniroh et al., (2018) that one way to improve mathematical communication skills is the need for personality development by increasing the student's self-confidence, because with confidence students can express thoughts or ideas more boldly and confidently in expressing their opinions.This is in line with what was stated by Rahmasuri, A. R., Dwijayanti, I., & Wulandari, (2022) that selfconfidence is an attitude of trust and confidence in one's abilities.With a confident attitude, a person will feel confident when doing something and responsible for what is done.This can be a driver and expedite the process of learning mathematics because students can learn mathematics well if they have high self-confidence.
Different self-confidence can affect students' mathematical communication skills.This is in line with research conducted by Sunaryo, Y., Waluya, S. B., Wardono., W. Dewi, (2022) that the higher students' self-confidence, the students' mathematical communication skills will also increase.Students can be said to have high self-confidence if they have confidence in their own ability to overcome problems.Good self-confidence is needed to solve problems, because students who have high self-confidence tend not to be influenced by other people's answers (Yulinawati & Nuraeni, 2021) Based on the exposure that has been delivered and the importance of mathematical

Profile Of Mathematical Communication Skills Of Class VIII Mts Al-Khairaat Tondo Students On Relation And Function
Material In Terms Of Self-Confidence Amelia, Alfisyahra, Lefrida, Pathuddin whom had different levels of self-confidence, namely high, medium and low self-confidence.
The data collection process used self-confidence questionnaires, written tests and interviews.Self-confidence questionnaires are used to determine students' levels of selfconfidence which include high, medium or low self-confidence.Using a Likert scale consisting of four answer choices, namely strongly agree (SS), agree (S), disagree (TS) and strongly disagree (STS) consisting of 33 statements.The grouping of high, medium and low 1.The ability of students to express a situation, picture, diagram into language, symbols or mathematical ideas / ideas correctly both orally and in writing.
2. The ability of students to use mathematical representations (diagrams, graphs) to express mathematical information.

The ability of students to communicate the conclusions of answers orally and in writing.
The data analysis techniques used according to miles and Huberman (Sugiyono, 2021) are data condensation, data presentation and conclusion drawing and verification.The technique of checking the validity of data in this study uses member check.

RESULTS AND DISCUSSION
The results of the research obtained in this study were in the form of self-confidence questionnaire results that had been conducted with 17 grade VIII A students.Based on the results of the self-confidence questionnaire, a classification of self-confidence grouping of students was obtained as the following table.Based on the results of self-confidence questionnaire data conducted offline in class VII A, 3 subjects were selected from each category, namely 1 subject with high selfconfidence, 1 subject with medium self-confidence and 1 subject with low self-confidence.
The selected research subjects can be seen in table 2. After taking self-confidence data, students carry out a mathematical communication skills test consisting of 2 description questions with relation and function material.Selected subjects from class VIII A MTs Al-khairaat Tondo will then conduct an interview.

The subject of High Self-confidence (RS)
Written mathematical communication skills From the problem "Suppose f is a function of the set A consisting of integers between 1 and 5 and the set B of integers between 3 and 7.If f function that expresses "two fare of" express f by : a.) Arrow chart; b.) Cartesian coordinates (graph)" are obtained in the following written test:

Profile Of Mathematical Communication Skills Of Class VIII Mts Al-Khairaat Tondo Students On Relation And Function
Material In Terms Of Self-Confidence Amelia, Alfisyahra, Lefrida, Pathuddin students have high self-confidence then they are able to express mathematical ideas orally and in writing, coherent and clear, they are also able to describe in visual form completely, able to use mathematical terms, notations, and structures appropriately.Subject RS was also able to use mathematical representations by drawing arrow diagrams and cartesian coordinates.This is supported by research by Aini & Setianingsih (2022) which concluded that in the Drawing aspect, subjects who have high self-confidence are able to draw graphs correctly and completely on the answer sheet and are able to explain the steps of making graphs systematically.
From the problem "It is known that R is the set of natural numbers between 1 and 9 and S is the set of odd numbers between 1 and 9.The relation connecting the set R to S is "less than".Specify domain, codomain and range".The following written test is obtained: Based on the results of the written test, mathematical communication skills on question number 2, the RS subject is able to write down the known and asked information contained in the problem and use the correct mathematical symbols when solving relation and function problems.This is in line with the opinion of Rizqi et al. (2016) which states that if students have high self-confidence then they are able to express mathematical ideas orally and in writing, coherent and clear, they are also able to describe in visual form completely, able to use mathematical terms, notations, and structures appropriately.Subject RS was also able to write the conclusion of the solution in accordance with the purpose of the problem.This is in line with the research of Asari et al. (2022) which states that subjects with high self-confidence can re-examine answers by writing conclusions well and correct answers.Students with a high level of self-confidence are able to fulfil all the ability indicators shown by being able to write and mention the information in the problem Safitri et al. (2022).From the results of the analysis of the mathematical communication ability test

Profile Of Mathematical Communication Skills Of Class VIII Mts Al-Khairaat Tondo Students On Relation And Function
Material In Terms Of Self-Confidence Amelia, Alfisyahra, Lefrida, Pathuddin From the problem "It is known that R is the set of natural numbers between 1 and 9 and S is the set of odd numbers between 1 and 9.The relation connecting the set R to S is "less than".Specify domain, codomain and range".The following written test is obtained: Based on the results of the written test of mathematical communication skills on question number 2, the NW subject has not been able to write down the information known and asked contained in the problem, has not been able to use mathematical symbols correctly, has not been able to write conclusions from the results of the solution in accordance with the purpose of the problem.
From the results of the analysis of the mathematical communication ability test on questions number 1 and 2, it can be concluded that the NW subject is able to meet one indicator of mathematical communication ability.

Oral mathematical communication skills
Based on the results of interviews on questions number 1 and 2, NW subjects were able to explain the information contained in the questions, able to explain the existing pictures, but were not able to explain the conclusions of the answers.From the results of the interview analysis of oral mathematical communication skills, it can be concluded that NW subjects are able to meet one indicator of mathematical communication skills properly and correctly.This is in line with the research of Muniroh et al., (2018) which states that the lower the self-confidence of students, the lower their mathematical communication skills.

CONCLUSION
Based on the results of research and discussions that have been carried out, the following conclusions are obtained: (a).The subject of high self-confidence can demonstrate the use of mathematical language well, namely by writing mathematical symbols in writing mathematical problem solving and when writing down known information.High self-Figure 6 NW written test answer result number 2 communication skills, the researcher wants to describe students' mathematical communication skills on relation and function material based on self-confidence.Therefore, researchers are interested in conducting a study entitled "Profile of mathematical communication skills of class VIII MTs Al-khairaat Tondo students on relation and function material in terms of self-confidence".METHODS The method used in this research is descriptive qualitative research with the type of case study, which is used to describe students' mathematical communication skills on relationship and function material based on self-confidence by looking at the subject's understanding and behaviour..The subjects used in this study amounted to 3 students out of 17 students in class VIII A MTs Al-khairaat Tondo for the 2022/2023 school year, each of Prima: Jurnal Pendidikan Matematika ◼ 239 mathematical communication skills refers to the results of mathematical communication skills tests in the form of 2 description questions.Before use, the self-confidence questionnaire and test instruments used in this study had previously been validated by expert lecturers.The indicators of mathematical communication skills used in this study based on the National Council Teachers Of Mathematics (2000) and(Tong et al., 2021) are as follows:

Figure 1
Figure1RS written test answer result number 1

Figure 2
Figure2RS written test answer result number 2