PROSES BERPIKIR SISWA KELAS V SEKOLAH DASAR DALAM MEMECAHKAN MASALAH MATEMATIKA
Abstract: This study aim to
describe the thinking process of elementary school fifth grade students in
solving mathematics problem based on Krulik and Rudnick rule. This research was
a qualitative research using the case study method. Sampling was done by a
combination of purposive sampling and snowball sampling technique. The subject
of research that used in this study was twelve subjects, that was: four
high-ability students, four moderate-ability students and four low-ability
students. The data was validated by using a time triangulation test. The
results show: (1) At the step of reading and thinking, students do not directly
identify all of the facts in writing. After identifying the facts, students
identify questions from the given problem. Furthermore, students do not portray
the problems encountered but directly process the needed information to answer
the question; (2) At the step of exploring and planning, students organize the
information on the matter. Students consider enough information on the matter
because there is a relation between the known and the asked. On the other hand,
students do not make tables, diagrams, charts, tables or images from a given
problem, but directly chose a strategy to answer the question; (3) At the step
of selecting the strategy, students use the making list of all possible answers
strategy. Students write down all the possibilities answers in the answer
sheet. However, there are students who also use the guessing and testing
strategy, guess how the value of variable and test whether the variable value
is correct. In addition there are also students who use simulation or
experimental strategies, students try to experiments; (4) At the step of
finding the answer, the student use estimation in finding the answer. On the other
hand, there is one student who uses algebra ability to find the answers.
Students are also assuming the third day as a variable. After obtaining the
value of the variable, student examine whether the numbers are correct. (5) At
the step of reflecting and extending, students can review the results of the
calculation by return on the answer sheet. Then students find that the answer
is correct. Furthermore, students assume no alternative other solutions. Then
the students do not make a generalizations of matter and discover the concept
of matter.
Penulis: Nugroho Arif Sudibyo,
Budiyono, Imam Sujadi
Kode Jurnal: jpmatematikadd140188
