JP2M (Jurnal Pendidikan dan Pembelajaran Matematika) 11 (1), 2025, 140-146 http://jurnal.stkippgritulungagung.ac.id/index.php/jp2m This is an open access article under the CC–BY license. https://doi.org/10.29100/jp2m.v11i1.6986 THE RELATIONSHIP OF SELF-CONFIDENCE WITH THE MATHEMATICAL PROBLEM-SOLVING ABILITY OF JUNIOR HIGH SCHOOL STUDENTS Verminus 1* , Mohamad Rifat 2 , Asep Nursangaji 3 1,2,3 Mathematics Education Study Program, FKIP, Tanjungpura University, Pontianak, West Kalimantan, 78124, Indonesia e-mail: 1* verminus29@gmail.com, 2 mohamad.rifat@fkip.untan.ac.id, 3 asep.nursangaji@fkip.untan.ac.id *Corresponding Author Received: 19-11-2024; Revised: 10-12-2024; Accepted: 01-01-2025 Abstract: The purpose of this study is to describe the relationship between self-confidence and mathematical problem-solving ability in finding solutions to linear equations among junior high school students. This study utilizes a qualitative approach with a correlational design. The subjects of this study are the 32 students of class VIII D at SMP Negeri 12 Pontianak. The instruments are used including a self-confidence questionnaire and a test on the ability to solve problems related to linear equations. Data analysis employs the Pearson Product Moment correlation. The data shows that the students of class VIII D have a good level of self-confidence in learning mathematics. The majority of these students also possess good mathematical problem-solving abilities. Based on the calculation of the Pearson Product Moment correlation, the obtained correlation coefficient (r-value) between self-confidence and mathematical problem-solving ability for the students of class VIII D at SMP Negeri 12 Pontianak is 0.366, indicating a low correlation. However, there is a positive and statistically significant relationship between self-confidence and mathematical problem-solving ability, implying that an increase in self-confidence tends to correspond with an improvement in students' problem-solving skills. Keywords: linear equations; mathematical problem-solving ability; self-confidence How to Cite: Verminus,. Rifat, Mohamad,. & Nursangaji, Asep. (2025). The Relationship of Self-Confidence with the Mathematical Problem-Solving Ability of Junior High School Students. JP2M: Jurnal Pendidikan dan Pembelajaran Matematika, Vol.11 No.1, (140-146). 6986 Introduction The quality of education from basic education institutions to universities can be assessed based on learning outcomes (Nur & Damayanti, 2021). Learning outcomes refer to the abilities that students develop through the learning process, which leads to changes in their knowledge, understanding, attitudes, and skills, ultimately enabling them to perform at a higher level (Putri et al., 2021). Learning outcomes culminate in the learning journey (Nugraha & Kamilah, 2024; Prawiyogi et al., 2022). According to Asih (Sutangsa, 2021), learning outcomes include the students’ skill acquired from their educational experience. Therefore, learning outcomes describe what students have achieved after studying, the result of changes and improvements in students' knowledge, attitudes, and skills. Learning outcomes can also be described as changes that occur intellectually, mentally, and physically (Ariyanto, 2016; Mulia et al., 2021). These changes are influenced by the educational process, both formal and non-formal. The desired learning outcomes include the students’ ability gain after gaining knowledge through learning, including cognitive, attitude, and psychomotor skills (Hutauruk & Simbolon, 2018). Evaluation activities are carried out to find out the extent to which students have