Ernita Sari Hasibuan
email: ernitasarihasibuan@yahoo.co.id
Abstract. The purpose
of this study to know the difference: (1) problem-solving ability of students
receiving learning through realistic mathematical approach with conventional
approaches. (2) communication skills of mathematical students acquire mathematical learning
through realistic mathematical approach with conventional approaches. (3)
variation / diversity of student’s
answer with realistic mathematics approach compared with conventional
approaches. This study is a quasi-experimental research. The population of the
study is junior class VIII student in Budistrya and Kartika I-2 Medan
accredited B. The instrument consists of: (1) test problem-solving ability, (2)
test the mathematical communication skills, the subject system of linear
equations of two variables, the test form is description. Both instruments are
declared to have qualified content validity, and reliability coefficient for
the problem-solving ability 0,886 and mathematical communication 0,904. Data
analysis was performed by t test. The first research results is problem-solving
ability of students receiving higher learning with PMR compared with students
who have learning with conventional approaches. Ability to understand problems
PMR 6.59 grade higher than the conventional class 5.21. Class planning
capabilities PMR 7.24 higher than the conventional class 5.40. The ability to
do class completion PMR 16.38 higher than the conventional class 9.40. The
ability to re-examine the class PMR 4.31 higher than 0.875 conventional
classroom. The entire aspect of problem solving ability classes PMR 34.53
higher than the conventional class 20.89. The results of both studies is the
mathematical communication skills of students receiving higher learning with
PMR compared with students who have learning with conventional approaches. The
ability to connect images into the language or mathematical symbols PMR 7.15
grade higher than the conventional class 5.49. Ability to explain everyday
events in the language or mathematical symbols PMR 7.88 grade higher than the
conventional class 5.81. The ability to connect the table into the language or
mathematical symbols PMR 7.36 grade higher than the conventional class 5.00.
The ability to explain mathematical ideas with the class graph method PMR 5.78
higher than the conventional class 2.63. Ability to explain everyday events
with a combined method of PMR 6.81 grade higher than the conventional class
3.23. The entire aspect of mathematical communication skills class PMR 34.99
higher than the conventional class 22.15. And a variety / diversity of
students' answers to the more realistic mathematics approach systematically
varied and compared with conventional approaches. Based on these results, researchers suggested that learning with the
PMR can be used as an alternative for mathematics teachers in presenting
mathematics, mathematics is supposed to be learning with realistic socialized
its use in junior high school.
Key Word : Problem Solving Ability, Communication Ability,
Realistic Matehmatics Approach, Variation
Of Answers That The Students.
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