Universal Journal of Educational Research 9(1): 108-115, 2021 http://www.hrpub.org DOI: 10.13189/ujer.2021.090112 Analysis of Mathematics Teacher Performance in Building Resilience and Mathematical Literacy on Student Learning Outcomes Hardi Tambunan Department of Mathematics Education, Nommensen HKBP University, Medan, Indonesia Received October 27, 2020; Revised December 14, 2020; Accepted January 20, 2021 Cite This Paper in the following Citation Styles (a): [1] Hardi Tambunan , "Analysis of Mathematics Teacher Performance in Building Resilience and Mathematical Literacy on Student Learning Outcomes," Universal Journal of Educational Research, Vol. 9, No. 1, pp. 108 - 115, 2021. DOI: 10.13189/ujer.2021.090112. (b): Hardi Tambunan (2021). Analysis of Mathematics Teacher Performance in Building Resilience and Mathematical Literacy on Student Learning Outcomes. Universal Journal of Educational Research, 9(1), 108 - 115. DOI: 10.13189/ujer.2021.090112. Copyright©2021 by authors, all rights reserved. Authors agree that this article remains permanently open access under the terms of the Creative Commons Attribution License 4.0 International License Abstract The purpose of this study was to determine the performance of mathematics teachers in building resilience and mathematical literacy towards student learning outcomes. This type of research is ex post facto with a sample of 283 students from a population of 961 students consisting of seven states and five private high schools, and obtained in clusters from twelve sub-districts in North Sumatra. The research instrument used a questionnaire and test. The data analysis used descriptive and inferential analysis. The results of the descriptive analysis conclude several things, namely (1) the teacher's performance in building mathematical resilience and literacy is in the medium category, (2) students' mathematical resilience, students' mathematical literacy abilities, and student learning outcomes are in the medium category. The results of inferential analysis show that the teacher's performance in building mathematical resilience, (1) has a high impact on the mathematical resilience of students which is influenced by students' mathematical literacy abilities to influence student learning outcomes, and (2) has a high impact on students' mathematical literacy abilities which is influenced by students' mathematical resilience to affect student learning outcomes. The teacher's performance in building mathematical literacy, (3) has a high impact on students' mathematical resilience which is influenced by students' mathematical literacy abilities to influence student learning outcomes, and (4) has a high impact on students' mathematical literacy abilities which is influenced by students' mathematical resilience to influence student learning outcomes in math. Thus it can be stated that the performance of teachers in building resilience and mathematical literacy has an impact on student learning outcomes. Keywords Performance, Building, Resilience, Literacy, Learning Outcomes 1. Introduction Mathematics is studied in schools from basic education to higher education in Indonesia. The purpose of mathematics education is to develop problem-solving abilities, build students' reasoning and creativity as a basis for following developments in science and technological knowledge, and apply them in everyday life. How are the learning outcomes of Indonesian students in mathematics? The Programme for International Student Assessment (PISA) report in 2018 [1] shows that student learning outcomes have not matched expectations, because the mathematics education score is ranked 73 out of 78 countries. The focus of the observed ability to determine the ranking is based on the students' mathematical literacy abilities. Mathematical literacy is the individual's ability to formulate, apply and interpret mathematics in various contexts, including the ability to do mathematical