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All Journal EDU-MAT: Jurnal Pendidikan Matematika SJME (Supremum Journal of Mathematics Education)
Nopiana, Rida
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Education Mathematics

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Analisis Kesalahan Siswa Dalam Menyelesaikan Soal Cerita SPLTV Ditinjau Dari Motivasi Belajar Nopiana, Rida; Ratnaningsih, Nani
SJME (Supremum Journal of Mathematics Education) Vol 7 No 2 (2023): Supremum Journal of Mahematics Education
Publisher : Fakultas Keguruan dan Ilmu Pendidikan Universitas Singaperbangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35706/sjme.v7i2.7952

Abstract

Math word problems are very important for students to understand, because math word problems are related to life. However, there are still many students who have difficulty in solving math word problems. Different levels of learning motivation can affect students' mistakes in solving math word problems. This study used descriptive qualitative method. The subjects of this study were 18 students of class XI IPS 3 MAN 5 Tasikmalaya and 3 subjects were selected by purposive selection taking into account the results of the questionnaire scores from each category and the number of errors. The results of this study, subjects with high motivation categories only made 2 mistakes only in the type of comprehension error, namely not writing down what was known and not writing down what was asked in the problem. Subjects in the category of moderate motivation made 5 errors in the types of comprehension errors (Comprehension Error), Skill Error (Process Skill Error), and final writing error (Encoding Error), namely not writing down what is known, not writing down what is being asked, not writing examples. , wrong in calculating, and wrong in writing the final conclusion. Whereas subjects with low motivation categories made 7 mistakes in all types of errors, namely not writing down what was known, not writing down what was being asked, not writing examples, wrongly compiling the equation of the problem, not continuing the solving process, wrong in doing the calculations, and not write a final conclusion. It is recommended for further researchers to conduct interviews with research subjects to obtain more in-depth information.
PENGEMBANGAN LEMBAR KERJA PESERTA DIDIK (LKPD) BERBASIS PBL UNTUK MENGEKSPLOR KEMAMPUAN BERPIKIR KRITIS MATEMATIS PESERTA DIDIK Nopiana, Rida; Supratman, Supratman; Rahayu, Diar Veni
EDU-MAT: Jurnal Pendidikan Matematika Vol 14, No 1 (2026)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/edumat.v14i1.23278

Abstract

Penelitian ini bertujuan untuk menghasilkan produk Lembar Kerja Peserta Didik (LKPD) berbasis PBL untuk mengeksplor kemampuan berpikir kritis matematis peserta didik pada materi penerapan konsep perbandingan trigonometri. Jenis penelitian ini adalah R&D dengan model pengembangan 4D yaitu tahap define, design, development dan dissemination. Validasi produk yang dikembangkan melibatkan ahli materi dan ahli media. Hasil uji validasi yang diberikan kepada para ahli materi dan ahli media berada pada kategori “sangat valid”. Uji kelayakan produk melibatkan guru matematika dan peserta didik dan memperoleh kategori “sangat positif”. Uji keefektifan menggunakan effect size (d) dengan nilai 1,76 sangat efektif untuk mengeksplor kemampuan berpikir kritis matematis. Penelitian ini dilakukan di MAN 5 Tasikmalaya yang melibatkan 18 peserta didik sebagai subjek uji coba dengan objek penelitiannya berupa LKPD berbasis PBL untuk mengeksplor kemampuan berpikir kritis matematis peserta didik. Penelitian ini menghasilkan produk LKPD berbasis PBL yang valid dan efektif untuk mengeksplor kemampuan berpikir kritis matematis peserta didik.   Kata kunci: LKPD, PBL, Kemampuan Berpikir Kritis Matematis Abstract: This research aims to produce a PBL-based Student Worksheet product to explore students' mathematical critical thinking skills in the application of trigonometric comparative concepts. This type of research is R&D with a 4D development model which is the define , design, development and dissemination stages. The validation of the developed product involves subject matter experts and media experts. The results of the validation test given to material experts and media experts are in the "very valid" category. The product feasibility test involved math teachers and students and obtained the "very positive" category. The effectiveness test using effect size (d) with a value of 1.76 is very effective to explore mathematical critical thinking skills. This research was conducted at MAN 5 Tasikmalaya involving 18 students as trial subjects with the object of research in the form of PBL-based student worksheet to explore students' mathematical critical thinking skills. This study produced valid and effective PBL-based student worksheet products to improve students' mathematical critical thinking skills. Keywords: Student worksheet, PBL, Mathematical Critical Thinking Skills
Co-Authors Nani Ratnaningsih Rahayu, Diar Veni Supratman Supratman, Supratman