PENALARAN MATEMATIS SISWA DALAM PEMECAHAN MASALAH PADA MATERI POKOK FAKTORISASI BENTUK ALJABAR DI KELAS VIII SMP NEGERI 1 SURAKARTA
Abstract: The purposes of this
study were to describe: (1) the students with high-ability mathematical
reasoning on problems solving of algebra factorization in eighth grade students
of SMP Negeri 1 Surakarta, (2) the students with moderate-ability mathematical reasoning in
problem solving of algebra factorization of eighth grade students of SMP Negeri
1 Surakarta, (3) the students with low-ability mathematical reasoning in
problem solving of the algebra factorization material in eighth grade students
of SMP Negeri 1 Surakarta. This research was a qualitative case study type. The
research subjects were taken from eighth grade students of SMP Negeri 1
Surakarta. The subjects amounted to 9 students consisting of 3 students with
high ability, three students with moderate ability, and 3 students with low
ability. The research data were in the form of written and oral data. Written
data were obtained from the research subject test on written test instruments.
The oral data obtained from the think aloud verbal conducted by researchers to
the study subject. The techniques of analyzing the data were: (a) data
reduction (b) presention of data (c) conclusion. The results showed that the
students with high-ability reasoning mathematical were: (a) understand the
problem, the students read the questions carefully and write down the
information that is known of the problem and write down what was being asked of
the problem; (b) present the mathematical expressions and perform calculations,
students write a mathematical equation to calculate by used the operations of
addition, subtraction and multiplication algebra fluently; (c) submit the
notion and manipulation of mathematics, students write the answer to determine
the length and width of the rice field by factoring and write down the
factoring results that obtained; (d) drawn the conclusions, students write the
length and width of the rice fields and multiplying the factoring results
obtained to convince answers that obtained. The students with moderate-ability
reasoning mathematical were: (a) understand the problem, students read the
question after it write down the information that was known from the problem and
write down what was being asked of the problem; (b) present the mathematical
expressions and perform calculations, students write a mathematical equation to
calculate by using the operations of addition, subtraction and multiplication
algebra although this was used long time to write mathematical expressions and
perform calculation, but students were get the expected rice fields wide. The
students with low-ability mathematical reasoning were: understand the problem,
students read again and again but still confused after it write down the
information that was known from the problem and write down what was being asked
of the problem.
Penulis: Siti
Suprihatiningsih, Imam Sujadi, Dewi Retno Sari S
Kode Jurnal: jpmatematikadd140186
