Nurdiyah Kurniati
Universitas Pendidikan Indonesia

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AN EXPLORATION STUDENT’S ERRORS IN SOLVING TRIGONOMETRIC RATIO PROBLEMS WITH ITS SCAFFOLDING Nurdiyah Kurniati; Suhendra Suhendra; Nanang Priatna; Sufyani Prabawanto
AKSIOMA: Jurnal Program Studi Pendidikan Matematika Vol 11, No 3 (2022)
Publisher : UNIVERSITAS MUHAMMADIYAH METRO

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (351.097 KB) | DOI: 10.24127/ajpm.v11i3.5233

Abstract

Trigonometry is an essential topic in learning mathematics, but in fact there are still identified student errors in solving trigonometry problems. Based on these problems, this study aims to describe students' errors in solving trigonometric problems, especially on the topic of trigonometric ratios and its scaffolding. This study uses a qualitative method with a case study approach. Collecting data through observation, tests and interviews. The subjects of this study were 35 students of class X in one of the senior high schools in Kutai Kartanegara Regency, East Kalimantan. The results of this study are that there are seven types of errors made by students in solving trigonometric ratio problems, namely: (1) error in understanding the concepts; (2) error in setting operation; (3) error in performing calculation; (4) error in applying the principle; (5) error in writing algorithm; (6) random response; and (7) error in drawing. Based on the results of these studies, it can be concluded that the forms of scaffolding that can be given are:explaining, reviewing, restructuring,and developing conceptual thinking. Trigonometri merupakan materi yang esensial dalam pembelajaran matematika, namun pada faktanya masih terdapat kesalahan-kesalahan siswa yang teridentifikasi dalam menyelesaikan masalah trigonometri. Berdasarkan permasalahan tersebut, penelitian ini bertujuan untuk mendeskripsikan kesalahan-kesalahan siswa dalam menyelesaikan masalah trigonometri khususnya pada topik rasio trigonometri beserta scaffoldingnya. Penelitian ini menggunakan metode kualitatif dengan pendekatan studi kasus. Pengumpulan data melalui observasi, tes dan wawancara. Subjek penelitian ini adalah 35 siswa kelas X di salah satu SMAN di Kabupaten Kutai Kartanegara, Kalimantan Timur. Hasil penelitian ini yakni terdapat tujuh jenis kesalahan yang dilakukan siswa dalam menyelesaikan masalah rasio trigonometri, yaitu: (1) kesalahan dalam memahami konsep; (2) kesalahan dalam menetapkan operasi; (3) kesalahan dalam melakukan perhitungan; (4) kesalahan dalam menerapkan prinsip; (5) kesalahan dalam menuliskan algoritma; (6) jawaban sembarang; dan (7) kesalahan dalam menggambar. Berdasarkan hasil penelitian tersebut, dapat disimpulkan bahwa bentuk scaffolding yang dapat diberikan yaitu explaining, reviewing, restructuring, dan developing conceptual thinking.
ANALISIS KESALAHAN SISWA KELAS VII TERHADAP KONSEP PERKALIAN BESERTA REKOMENDASI DESAIN PEMBELAJARAN KONSEP PERKALIAN Nurdiyah Kurniati; Sufyani Prabawanto; Haeruddin Haeruddin
JPMI (Jurnal Pembelajaran Matematika Inovatif) Vol 5, No 6 (2022): JPMI
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/jpmi.v5i6.13968

Abstract

Multiplication is one of the operations of basic arithmetic which has an essential role in learning mathematics. But in fact there are still errors made by students in calculating multiplication operations. Therefore, this study aims to comprehensively identify students' errors in the concept of multiplication and provide recommendation learning designs in instilling or constructing the concept of multiplication. This research is a type of qualitative research with a case study approach. The subjects of this study were 34 students of class VII in one of the junior high schools in Samarinda City, East Kalimantan. The data that has been collected is analyzed through three processes, namely data reduction, data presentation, and drawing conclusions. The results showed that there were still errors made by students in solving multiplication problems, including errors in understanding the concept of multiplication as an addition operation, errors in understanding the concept of multiplication as a combination of addition and multiplication operations, and difficulties in multiplying tens and hundreds operations.