In particular, a person's mathematics self-concept refers to the perception or belief in his or her ability to do well
in mathematics or confidence in learning mathematics (Reyes, 1984; Shavelson, Hubner, & Stanton, 1976). At the
same time, mathematics self-concept is defined as learning mathematics concepts, learning the topics easily, being
successful, liking the lectures or not, self evaluation of students in terms of their interest and skills at lectures, and
their perceptions about these skills (Marsh, 1992; Reyes, 1984). In the context of this study, self-concept is defined
as the way an individual thinks, feels, acts, values and evaluates himself or herself in relation to performance in
mathematics.