2012 which are also in the low material mastery group
(Stacey, 2015).
Based on the data, students' ability in
understanding mathematics is very low. The ability of
students in solving mathematical problems can be
known through the tests given when the evaluation of
mathematical learning. In the process of mathematics
learning, students often make mistakes. The number
of mistakes made in working on mathematical
problems into a hint of the extent to which student
mastery of the material. From the mistakes made, it
can be further investigated about the source of errors
committed by students. The cause of the mistakes
made by the student should immediately get a
complete solution. This solution is done by analyzing
the root cause of the error, and afterward identified
the types of mistakes that are commonly done by
students in crafting math tests.
The mistakes made by students are obstacles to
learning mathematics. According to Taylor Koriakin,
et al error is a form of deviation from the right, pre-
determined procedural or deviation from an
expected(Taylor, Bogdan and DeVault, 2015).
Identifies the type of miscalculation of the count
operation performed by the student(Mercer and
Mercer, 1989). The types of mistakes made by
students are divided into operating errors,
computational errors, algorithmic errors, and random
answers. This is similar to what is described by
Radatz, there are 3 indicators of the type of error that
is: a) misconceptions, mistakes made by students in
using the concepts related to the material, b) Errors of
principle, errors in using the rules or mathematical or
incorrect formulas in the use of principles relating to
the material, c) Operational error, errors in operation
or calculation. Certainly, the student's mistake will
have an impact on the outcome of the learning process
(Radatz, 1980).
The factors that influence student learning
outcomes are two factors, among others internal
factors, namely the lack of special talent in doing
certain situations, lack of basic skills possessed by
students, lack of motivation and motivation to learn
and physical factors which does not support learning
activities (Lim and Morris, 2009). Another factor is
about how the character of students in the learning
process, as well as learning styles owned by each
student. Mistakes in mathematical problem solving
can also be observed from student learning styles
(Ryan and Williams, 2007). In line with that opinion,
Eugene A Geist, and Margaret King suggests that
students' mistakes can be seen from the student's
learning style, of course, because every individual has
different characters, so in the case of any questions
the factors can cause students to make mistakes(Geist
and King, 2008).
Learning styles are a combination of how one
absorbs, and then organizes and processes
information (Schmeck, 2013). Learning styles are not
just aspects of facing information, seeing, listening,
writing and saying but also the aspect of information
processing, analytical, global or left-brain right brain,
another aspect is when responding to something in the
learning environment (abstractly and concretely
absorbed). This is in line with the view of Riding &
Rayner, which suggests a student learning style that
is the consistent way in capturing stimulus or
information, how to remember or think and solve
problems(Riding and Rayner, 2013). Learning styles
are the way students tend to react and use incentives
to absorb and then organize and process information
in the learning process.
David Kolb's learning model is a learning style
that involves new student experiences, develops
observation/reflection, drafts, and uses theories to
solve problems. Student learning styles are influenced
by personality types, habits, and develop over time
and experience. The model is built on the idea that
learning preferences can be explained by the active
observations of experiments-reflections and
experiences of abstract concrete concepts. The result
is that there are four types of learners: convergent
(experimental experimental-experimental abstract),
accommodator (experimental - active experience),
assimilation (conceptualization of abstract - reflective
observation), and divers (reflective viewing
experience)(Kolb, 1981).
Based on observations in one of the Vocational
High Schools, many students complained that they
had difficulty in understanding math problems. The
mathematics whose primary purpose is to form
students with the first critical, logical and systematic
ability is fortified with the mathematical fears
themselves. In addition, mathematics teachers argue
that during this time students have a variety of
learning styles that have not been known for sure, of
course, this is correlated with the learning process
conducted in the classroom. Thus, the researchers are
interested in learning styles according to David
Kolb's theory. where individual differences are
mapped into different types of learning styles.
Observing the problem, in previous studies have
not paid attention to the analysis of student errors on
differences in learning styles that students have. In
addition, the analysis of student error in solving
mathematical problems can be detected through the
answers to exercise questions. Thus, researchers are
encouraged to analyze student errors.