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All Journal Jurnal Daya Matematis INSPIRATIF JURNAL PENDIDIKAN MATEMATIKA Jurnal Cendekia : Jurnal Pendidikan Matematika Journal on Education Jurnal Perspektif CARTESIUS : Jurnal Pendidikan Matematika M A T H L I N E : Jurnal Matematika dan Pendidikan Matematika Vygotsky: Jurnal Pendidikan Matematika dan Matematika Jurnal Pendidikan dan Konseling Journal of Natural Sciences Humantech : Jurnal Ilmiah Multidisiplin Indonesia Nautical: Jurnal Ilmiah Multidisiplin Indonesia Cartesius Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) JURNAL HANDAYANI PGSD FIP UNIMED Journal of Medives: Journal of Mathematics Education IKIP Veteran Semarang Jurnal Riset Rumpun Ilmu Pendidikan (JURRIPEN)
Asrin Lubis
Universitas Negeri Medan
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Penerapan Model Pembelajaran Problem Based Learning san Pendekatan Saintifik Berbasis Lesson Study Untuk Meningkatkan Kemampuan Pemecahan Masalah Siswa Lisa Ariani; Asrin Lubis
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 3 No. 1 (2024): April : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v3i1.2497

Abstract

The purpose of this study is to ascertain how efforts are made and enhance students' capacity for problem-solving following the application of the lesson study-based scientific approach and problem-based learning model. 38 students from SMP Negeri 4 Tebing Tinggi's VIII–5 class during the 2022–2023 academic year served as the research subjects. Classroom Action Research (PTK), which is this kind of research, is divided into two cycles. In pre-action, students take an initial test, and at the conclusion of each cycle, they take an exam on their problem-solving skills. The research findings are as follows: (1) If the teacher masters and effectively applies the PBL model and scientific approach based on lesson study, students' mathematical problem solving abilities can be improved, (2) Application of the PBL model can increase student learning completeness by 63.16% from 23.68% at the end of cycle I to 86.84% at the end of cycle II. (3) Students' mathematical problem solving abilities can be improved by 34.37% from 47.47% at the end of cycle I to 82.04% at the end of cycle II.
Pengaruh Model Pembelajaran Berbasis Masalah dengan Pendekatan STEM terhadap Kemampuan Pemecahan Masalah Matematis Siswa Ripaldo Pandiangan; Asrin Lubis
JURNAL RISET RUMPUN MATEMATIKA DAN ILMU PENGETAHUAN ALAM Vol. 3 No. 1 (2024): April : Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrimipa.v3i1.2518

Abstract

This study aims to determine whether there is an influence of the problem-based learning model (PBL) with a STEM approach on the mathematical problem solving ability of grade VIII students of SMP Negeri 17 Medan. This research was conducted at SMP N 17 Medan T.A 2023/2024. The research method used is a quasi-experimental method. The sample of this study consisted of two classes, namely class VIII-3 as an experimental class taught with a PBL model with a STEM approach and class VIII-4 as a control class taught with conventional models. Based on descriptive statistics and categorization of research results, it was found that the mathematical problem solving ability of experimental class students was 67,74% of students in the high category, 32.26% of other students in the medium category, and no students in the low category. Meanwhile, in the control class, 15,63% of students were in the high level of problem solving ability, 53,13% were in the medium level and 31,24% of students were in the category low category. Thus it can be seen that the mathematical problem solving ability of grade students taught with PBL with a STEM approach is better than conventional learning models. Furthermore, with inferential statistical analysis for the t test, calculated t value = 2,42 and ttable = 1,999623, thus t calculated > t table means that the problem-solving ability of students taught with PBL with a STEM approach is not the same as students who use the learning conventional model. With further analysis, Fcalculated = 5,6847 and F table = 3,998494482, then calculated F > F table so it can be concluded that problem-based learning models with a STEM approach have a significant effect on students' mathematical problem solving abilities.
Development of a Flipbook Learning Media Based on a Problem-Based Learning Model to Improve Mathematical Literacy Skills and Students' Motivation for Learning on the Pythagorean Theorem in Grade VIII at State Junior High School 40 Medan Simarmata, Putri Sonia; Mulyono, Mulyono; Lubis, Asrin
Daya Matematis: Jurnal Inovasi Pendidikan Matematika Vol 13, No 3 (2025): December (article on Progress)
Publisher : Universitas Negeri Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26858/jdm.v13i3.77215

Abstract

Based on the results of initial observations at SMP Negeri 40 Medan, there are teachers who have not maximized the design, development, and utilization of learning media, especially flipbook media that has never been implemented. As well as the mathematical literacy skills and learning motivation of students are still low. This study aims to (1) produce flipbook media based on the Problem Based Learning learning model that is valid, practical and effective, (2) analyze the improvement of mathematical literacy skills and (3) analyze the improvement of student learning motivation using flipbook media based on Problem Based Learning. This study uses the ADDIE model. This study involved class VIII students of SMP Negeri 40 Medan. The instruments used in the development of flipbook media are Teaching Modules, LKPD, Mathematical Literacy Ability Tests and Student Learning Motivation Questionnaires. The results of the study are that the flipbook media meets the valid criteria with a score of 4.69, then the flipbook media was tested to obtain practical and effective media so that it meets the practical criteria with a score of 88.95, and the flipbook media meets the effective criteria with a score of 87.79. The increase in mathematical literacy skills measured by N-gain on the development trial conducted twice against pretest with posttest I with an average N-gain of 0.33 in the medium category, then against posttest I and posttest II with an average N-gain of 0.73 in the high category. Furthermore, the increase in students' learning motivation by measuring the pretest and posttest with an average N-gain of 0.6 in the medium category. Based on the N-gain results, it is stated that flipbook media based on the Problem Based Learning learning model is able to improve students' mathematical literacy skills and learning motivation at SMP Negeri 40 Medan.
Co-Authors Andrea Arifsyah Nasution Andri Kristianto Sitanggang Asmin Asmin Dinda Khairunnisa Elisa, Tetty Suyanty Elvis Napitupulu, Elvis Erlan Maulana Febry Azmiana Siregar Hermawan Syahputra Husein Nasution, Sofyan Ika Trisni Simangunsong Indra Hamonangan Siahaan Irmaya, Nia Kamilah Silalahi Kathy Putriayu Debora Lisa Ariani Muhammad, Mari Mulyono Mulyono Puandi, Akhyar Rida Nelviani Lubis Ripaldo Pandiangan Semi Syaina Amanda simangunsong, ita pratiwi Simanjorang, Mangaratua M Simarmata, Putri Sonia Turnip, Yossi Artanti Wahyu Anugerah Sianipar