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INDONESIA
LEMMA: Letters Of Mathematics Education
Published by STKIP PGRI Sumatera Barat
ISSN : 24074527     EISSN : 24601047     DOI : -
Core Subject : Education,
Education
Journal of LEMMA is a journal of mathematics education result written by all academics such as teacher, lecturer, researcher who has done peneitian in mathematics education.
Arjuna Subject : Ilmu Sosial - Pendidikan
Articles 152 Documents
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HUBUNGAN ANTARA KREATIVITAS BELAJAR DAN KEAKTIFAN BERORGANISASI TERHADAP PRESTASI AKADEMIK MAHASISWA STMIK JAYANUSA PADANG
JURNAL LEMMA Vol 9, No 1 (2022): Lemma: Letters of Mathematics Education
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jl.2022.v9i1.5732

Abstract

Keaktifan mahasiswa dalam berorganisasi mempunyai pengaruh yang besar terhadap prestasi akademik mahasiswa. Penelitian ini bertujuan untuk mengetahui hubungan antara kreativitas belajar dan keaktifan dalam berorganisasi terhadap prestasi akademik mahasiswa. Subyek yang diteliti adalah mahasiswa STMIK Jayanusa semester ganjil 2018/2019 sebanyak 83 mahasiswa. Data kreativitas belajar dan keaktifan berorganisasi diperoleh melalui penyebaran angket, sedangkan untuk  prestasi akademik mahasiswa diperoleh dari kartu hasil studi (KHS), teknik analisa data dengan korelasi dan regresi. Hasil penelitian menunjukkan terdapat hubungan yang positif antara kreativitas belajar terhadap prestasi akademik mahasiswa. Terdapat hubungan yang positif antara keaktifan berorganisasi terhadap prestasi akademik mahasiswa, dan terdapat hubungan yang positif antara kreativitas belajar dan keaktifan berorganisasi secara bersama-sama terhadap prestasi akademik mahasiswa
ANALISIS KEMANDIRIAN SISWA DI ERA NEW NORMAL
JURNAL LEMMA Vol 9, No 1 (2022): Lemma: Letters of Mathematics Education
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jl.2022.v9i1.5839

Abstract

Abstract The independence of students in the new normal era is needed to be able to understand the subject matter in order to achieve the desired learning goals. This research is motivated by the low learning independence of students when studying online. The purpose of this study was to determine the description of student learning independence in the new normal era of class X science at Madrasah Aliyah Swasta (MAS) Lubuk Malako, South Solok Regency. The research method used is descriptive method using a qualitative approach. The sampling technique used is purposive sampling. The instruments used to collect data are in the form of student learning independence questionnaires and interviews. The test results were analyzed based on the assessment criteria, namely high, medium, low, and very low. The results showed that students' learning independence in the new normal era of class X IPA was moderate because of the 8 indicators of student learning independence, there were 3 indicators of students who answered incompletely, namely indicators of learning initiative, difficulty seeing. as a challenge, and utilize and seek relevant sources.
ANALISIS KESALAHAN SISWA DALAM MENYELESAIKAN SOAL MATEMATIKA KELAS VIII.5 SMP NEGERI 7 SIJUNJUNG
JURNAL LEMMA Vol 9, No 1 (2022): Lemma: Letters of Mathematics Education
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jl.2022.v9i1.5643

Abstract

Penelitian ini dilatarbelakangi oleh banyaknya siswa yang melakukan kesalahan dalam menyelesaikan soal matematika. Tujuan dari penelitian ini untuk mengetahui kesalahan yang dilakukan siswa dalam menyelesaikan soal matematika kelas VIII.5 SMP Negeri 7 Sijunjung. Jenis penelitian yang digunakan adalah penelitian deksriptif dengan menggunakan pendekatan kualitatif. Teknik pengambilan sampel menggunakan purposive Sampling sebanyak 28 orang siswa kelas VIII.5 SMP Negeri 7 Sijunjung. Teknik pengumpulan data dilakukan dengan metode tes, wawancara, dan dokumentasi. Hasil tes dianalisis berdasarkan tingkat kemampuan siswa, setelah itu dianalisis jenis kesalahan berdasarkan indikator Newman. Hasil penelitian ini menunjukan bahwa jenis kesalahan yang dilakukan siswa tingkat kemampuan tinggi yaitu, kesalahan dalam membaca soal, kesalahan dalam memahami soal, dan kesalahan dalam penulisan jawaban akhir. Jenis kesalahan yang dilakukan siswa kemampuan sedang yaitu, kesalahan dalam membaca, kesalahan dalam transformasi proses, kesalahan dalam keterampilan proses, dan kesalahan dalam penulisan jawaban akhir. Jenis kesalahan yang dilakukan siswa kemampuan rendah yaitu, kesalahan dalam membaca soal, kesalahan dalam memahami soal, kesalahan dalam transformasi proses, kesalahan dalam keterampilan proses, dan kesalahan dalam penulisan jawaban akhir.
ANALISIS KESALAHAN SISWA DALAM MENYELESAIKAN SOAL MATEMATIKA KELAS VIII DI SMP N 2 LUHAK NAN DUO KABUPATEN PASAMAN BARAT
JURNAL LEMMA Vol 9, No 1 (2022): Lemma: Letters of Mathematics Education
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jl.2022.v9i1.5644

Abstract

This research is a descriptive research with a qualitative approach. This study aims to find out how the errors made by students in working on math problems in class VIII4 students at SMP N 2 Luhak Nan Duo, West Pasaman Regency. The subjects in this study were VIII4 class students at SMP N 2 Luhak Nan Duo, West Pasaman Regency. The taking of research subjects was based on the results of essay tests on mathematics learning given to all students of class VIII4, totaling 26 students. The data analysis technique uses data reduction, data presentation, conclusion drawing, and data validity (triangulation). The results of this study indicate that students perform Zeroing error indicators, namely (1) Careless Errors (CaE) or factual errors, students do not consider the components in the question to be known and asked the question because students are not used to doing it every time they solve problems and students are lazy to write components because According to students it takes a long time to solve the problem. (2) Concept Errors (CoE) or conceptual errors, students do not master the concepts in problem solving because students do not understand examples and calculations. (3) Application Errors (ApE) or principle errors, students do not know the formula or know the formula so that students cannot solve the problem because students are in a hurry so they forget the formula to solve the problem. And (4) Test Talking Errors (TTE) or student operating errors did not complete the answers and final conclusions because there was no concentration disturbed by the answers of friends.
MODULE DEVELOPMENT BASED ON REALISTIC MATHEMATIC EDUCATION (RME) DATA PRESENTATION MATERIALS ON HIGH SCHOOL
JURNAL LEMMA Vol 9, No 1 (2022): Lemma: Letters of Mathematics Education
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jl.2022.v9i1.6070

Abstract

The background of this research by the limitations of teaching materials and learning that is still teacher-centered, especially on data presentation material. Problems related to the presentation of data are often encountered in the daily lives of students, but the material for presenting data in textbooks has not been linked to the daily lives of students. Linking learning materials with students' daily lives is able to help students understand data presentation material. The purpose of this research is to produce a valid and practical Realistic Mathematical Education (RME) based module on data presentation material. The type of research used is Research and Development with reference to the Plomp development model. The product developed is a module based on Realistic Mathematical Education (RME) on data presentation material. The instruments used are validation sheets, practical questionnaire sheets, and interview guidelines. The results of the validity show that the module based on Realistic Mathematical Education (RME) is already valid with a percentage of 78%. The results of the practicality test with mathematics teachers and students obtained a percentage of 89.756% with a very practical category. Based on the results of the study, it can be concluded that the module based on Realistic Mathematical Education (RME) is valid and practical to use in Data Presentation material at SMPN 1 Nan Sabaris, Padang Pariaman Regency.
PENGARUH MODEL PEMBELAJARAN GENERATIVE MULTI REPRESENTATION LEARNING (GMRL) TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIKA SISWA
JURNAL LEMMA Vol 9, No 2 (2023): Lemma: Letters of Mathematics Education
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jl.2022.v9i2.4847

Abstract

AbstractThis research was conducted at SMP Atthayyibah, Semurup, Kerinci in 2020/2021. This study aims to determine difference in student’s problem solving abilities using Generative Multi Representation Learning (GMRL) models and conventional learning models. This type of research is quantitative using a quasi-experimental approach. The research sample consisted of 40 people consisting of 2 classes (VIII.A as the control class and VIII.B as the experimental class). This study used a posttest design only control group design. In the experimental class after treatment (GMRL learning process) and the control class with conventional learning processes, a problem solving ability test was carried out. The result showed that the problem solving abilities of students using the GMRL learning model were higher than those using conventional learning models. In conclusion, there are differences in students’ mathematical problem solving abilities using GMRL model in grade VIII SMP Attayyibah, Semurup, Kabupaten Kerinci in the 2020/2021 school year.
EFEKTIVITAS PEMBELAJARAN MATEMATIKA SECARA DARING MENGGUNAKAN APLIKASI WHATSAPP PADA MASA COVID-19 TERHADAP HASIL BELAJAR SISWA KELAS VIII SMP NEGERI 7 SUNGAI PENUH
JURNAL LEMMA Vol 9, No 2 (2023): Lemma: Letters of Mathematics Education
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jl.2023.v9i2.4864

Abstract

ABSTRAKDiketahui bahwa pandemi covid-19 yang terjadi pada saat ini berdampak pada dunia pendidikan karena pemerintahan menerapkan kebijakan lockdown yang membuat siswa harus belajar dari rumah. Tujuan penelitian ini adalah ingin mengetahui efektivitas pembelajaran matematika secara daring menggunakan aplikasi WhatsApp terhadap hasil belajar siswa kelas VIII A SMP Negeri 7 Kota Sungai Penuh. Jenis penelitian ini adalah deskriptif dengan pendekatan kuntitatif . Setelah dilakukan analisis data, terlihat bahwa nilai thitung = -25,937 sedangkan ttabel pada  = 0,05 dan derajat kebebasan (dk = n – 1 = 29 – 1 = 28) = 1,701 (thitung < ttabel atau -25,937<1,701) artinya terima H0 dan perbedaan nilai KKM (70) dengan nilai rata-rata hasil belajar matematika siswa kelas  SMP Negeri 7 Sungai Penuh sesudah pembelajaran matematika secara daring menggunakan aplikasi WhatsApp pada masa Covid-19 (58,97) adalah  11,03, sehingga dapat disimpulkan bahwa pembelajaran matematika secara daring menggunakan aplikasi WhatsApp pada masa Covid-19 tidak efektif dalam meningkatkan hasil belajar siswa kelas SMP Negeri 7 Sungai Penuh.
ANALISIS KEMAMPUAN PENALARAN SISWA KELAS X SMK DALAM MENYELESAIKAN SOAL MATEMATIKA
JURNAL LEMMA Vol 9, No 2 (2023): Lemma: Letters of Mathematics Education
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jl.2022.v9i2.5904

Abstract

 Solving math problems requires reasoning, and each student's reasoning is different. This research aims to describe masculine and feminine gender students in the mathematical reasoning process when working on math problems. The subjects selected were 2 students from class X SMK Darul Ulum Kepuhdoko Tembelang Jombang who had the same ability. The instruments used are test sheets, questionnaires and interviews. This research is qualitative by using time triangulation to see the validity of the data. The data obtained is reduced after it is presented and conclusions are drawn. Based on the analysis obtained, the reasoning of masculine and feminine gender students in solving math problems can master the six indicators. It is just that on the masculine gender, the subject does not write down what is asked and the mathematical model of the final results of the question, but the subject understands and can explain reasoning during the interview process. Feminine subject reasoning is more coherent and can communicate straightforwardly and clearly. 
PEMAHAMAN MAHASISWA TEKNIK INDUSTRI PADA PERKULIAHAN HYBRID KALKULUS DASAR 1 KELAS R1B UNIVERSITAS INDRAPRASTA PGRI
JURNAL LEMMA Vol 9, No 2 (2023): Lemma: Letters of Mathematics Education
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jl.2023.v9i2.6766

Abstract

Penelitian ini bertujuan untuk mengetahui kemampuan pemahaman mahasiswa Teknik Industri pada perkuliahan hybrid Kalkulus Dasar 1. Hal ini karena pemahaman ilmu teknik membutuhkan perhitungan matematik, sehingga dibutuhkan dasar ilmu matematik yang kuat untuk mahasiswa. Oleh karena itu mata kuliah Kalkulus Dasar 1 merupakan mata kuliah wajib untuk mahasiswa semester 1. Metode penelitian yang digunakan adalah kuantitatif. Responden dari penelitian ini terdiri dari 24 mahasiswa, yaitu 15 orang laki-laki dan 9 orang perempuan. Dari hasil UPM (Ujian Pengendalian Mutu) yang sudah dilaksanakan oleh mahasiswa, peneliti mengkaji nilai tersebut dengan analisis data deskriptif. Hasil analisis terlihat bahwa 91,7% dinyatakan lulus, hanya dua orang mahasiswa yang dinyatakan tidak lulus, dan hasil rata-rata nilai UPM yaitu 77,71.
ANALISIS KESALAHAN SISWA DALAM MENYELESAIKAN SOAL CERITA PERBANDINGAN BERDASARKAN PROSEDUR NEWMAN
JURNAL LEMMA Vol 9, No 2 (2023): Lemma: Letters of Mathematics Education
Publisher : Universitas PGRI Sumatera Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22202/jl.2022.v9i2.5404

Abstract

Tujuan penelitian ini adalah untuk mendeskripsikan jenis-jenis kesalahan dan penyebab siswa melakukan kesalahan dalam menyelesaikan soal cerita pada materi perbandingan. Penelitian ini merupakan penelitian kualitatif dan kuantitatif yang digunakan untuk menggambarkan persentase kesalahan. Subjek penelitian ini adalah 30 siswa kelas VII D SMP Negeri 01 Mukomuko yang kemudian peneliti memilih 4 siswa yang paling banyak melakukan kesalahan dan digunakan sebagai subjek wawancara untuk mengetahui faktor-faktor penyebab siswa melakukan kesalahan. Teknik pengumpulan data yang digunakan adalah teknik tes dan wawancara. Soal tes yang digunakan dalam penelitian ini adalah soal essay sebanyak 5 butir soal yang telah divalidasi oleh validator. Teknik analisis data yang digunakan dalam penelitian ini adalah reduksi data, penyajian data dan penarikan kesimpulan. Dari hasil analisis kesalahan siswa, persentase kesalahan yang dilakukan siswa adalah: 1) kesalahan membaca 0%, 2) kesalahan memahami masalah 40%, 3) kesalahan transformasi 26%, 4) keterampilan proses kesalahan 59,3%, 5) kesalahan penulisan jawaban akhir sebesar 77,3%. Kesalahan yang paling sering dilakukan adalah kesalahan penulisan jawaban akhir. Berdasarkan uraian di atas dapat disimpulkan bahwa masih banyak siswa kelas VII D SMP Negeri 01 Mukomuko yang melakukan kesalahan dalam menyelesaikan soal cerita pada materi perbandingan.

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