problems in the linear equation material such as how
to draw graphs, how to find gradients, and how to find
linear equation. Besides asking the group of teachers
and friends, students also use some learning resources
or look back at the material that has been studied that
relates to linear equation such as algebraic material
and Cartesian coordinate material.
Communicative value is an attitude or action that
relates to other people in which there is easy-to-
understand communication so that a pleasant
atmosphere in collaboration (Chin, 2001). The value
of communicative characters in linear equation and
algebra operations can be seen when students actively
answer when the teacher asks, students actively
discuss with their friends in completing group
assignments and express their opinions on the issues
discussed.In teaching and learning linier equation,
teacher asked students to make groups to work on
student worksheet. Then, they discussed with their
group. When working on student worksheet, student
D discussed with his group friends. In addition,
student D also helped when his friend was in distress,
student D helped his friend to understand the steps of
student worksheet. Then, when teacher asked
students to come forward in discussing what was
done in the student worksheet, student D volunteered
to write or give an opinion about the issues discussed.
Based on all results of observations described, it can
be seen that student D raises communicative value
indicators.
There are 3 main topics in linear equation material
namely graph, gradient and linear equation. In the
matter of linear equations, geometry is studied with
algebra as a calculation tool. To study gradients,
students must master the arithmetic operations on
integers and fractions. To draw graphics, students
must master the location of points on the Cartesian
plane and the relation and function. To determine
linear equation, students need mastery of algebraic
operations and the completion of one variable linear
equations. From the results, it was found that in
studying linear equation , the character values that
often arises were work hard and communicative
value. This is because 3 topics in linear equation
material are interrelated so that there are so many
questions and more steps that must be done.This
causes students to work hard in solving linear
equation problems. In this case, students will actively
express their opinions in the discussion and ask each
other because the steps of the student worksheet work
on linear equation. In addition, linear equation
material is quite difficult because it deals with graphs,
cartesian fields, and algebra. Because cartesian and
algebraic coordinates have been studied before
entering the material of linear equation, students feel
familiar with linear equation material so that students
become more active in expressing their opinions.
5 CONCLUSIONS
In this study, it can be concluded that the material of
mathematics subjects affects character values that
appear. In the material of linear equation there were
four character-values that appear, namely the
character value of hard work, curiosity,
communicative and thorough. This happened since 3
topics in linear equation material namely graph,
gradient and linear equation are interrelated.
ACKNOWLEDGEMENTS
We thank to Universitas Sriwijaya that funded this
research through Hibah Unggulan Kompetitif in
2018. We also thank to Reno Sutriono who helped in
doing observation, teachers, and students who were
involved in this study.
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