Characterization of The Ability to Understand Mathematical Concepts of Relation and Functions at Student Class VIII

Abstract

This research aims to describe the ability to understand mathematical concepts of Relation and function. This research applied to class VIII of Islamic Junior High School students in 2021/2022. The approach used in this study is qualitatively descriptive. The data source in this study is learners from class VIII, which amounted to 24 learners. Moreover, the subjects selected in the study were three high, moderate, and low-ability learners selected using purposive sampling techniques. This research instrument uses tests of mathematical concept and interview. Learners are given four questions that correspond to indicators of the ability to understand mathematical concepts to be known their character. Based on the results of the study, obtained a characterization of learners in the material of relations and functions are 1) can restate the concept of relations and functions appropriately, 2) can classify objects according to their concepts appropriately by providing the right reasons, 3) can apply formulas according to procedures in solving problems appropriately, and 4) can present a concept in the form of mathematical representations appropriately.