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All Journal Jurnal Pendidikan Matematika Undiksha JURNAL MATEMATIKA STATISTIKA DAN KOMPUTASI P2M STKIP Siliwangi SITEKIN: Jurnal Sains, Teknologi dan Industri Jurnal Riset Pendidikan Matematika AKSIOMA: Jurnal Program Studi Pendidikan Matematika Jurnal Teknologi Informasi dan Ilmu Komputer Al-Jabar : Jurnal Pendidikan Matematika JOIV : International Journal on Informatics Visualization KALAMATIKA Jurnal Pendidikan Matematika PRISMA Faktor Exacta Jurnal Pengabdian Pada Masyarakat Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Numeracy : Jurnal Ilmiah Pendidikan Matematika BAREKENG: Jurnal Ilmu Matematika dan Terapan JMM (Jurnal Masyarakat Mandiri) JTAM (Jurnal Teori dan Aplikasi Matematika) SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Indiktika : Jurnal Inovasi Pendidikan Matematika Martabe : Jurnal Pengabdian Kepada Masyarakat KOMPUTIKA - Jurnal Sistem Komputer Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat Mathvision : Jurnal Matematika GERVASI: Jurnal Pengabdian kepada Masyarakat MES: Journal of Mathematics Education and Science Jurnal Penelitian Pembelajaran Matematika Sekolah Jurnal Eduscience (JES) Dedikasi: Jurnal Pengabdian Masyarakat Jurnal Pengabdian Masyarakat Borneo Jurnal Absis : Jurnal Pendidikan Matematika dan Matematika J-PiMat : Jurnal Pendidikan Matematika Jurnal Magister Pendidikan Matematika (JUMADIKA) Jurnal Abdi Insani Abdimasku : Jurnal Pengabdian Masyarakat Journal of Innovation Information Technology and Application (JINITA) Range : Jurnal Pendidikan Matematika Jubindo: Jurnal Ilmu Pendidikan Bahasa dan Sastra Indonesia Jurnal Anugerah: Jurnal Pengabdian Kepada Masyarakat Bidang Keguruan dan Ilmu Pendidikan Journal of Research in Mathematics Trends and Technology JAMBURA JOURNAL OF PROBABILITY AND STATISTICS JUPIKA: JURNAL PENDIDIKAN MATEMATIKA Jurnal Diferensial Jurnal Penelitian Inovatif MATH-EDU: Jurnal Ilmu Pendidikan Matematika Jurnal Algoritma Smart Society: Community Service and Empowerment Journal Fraction: Jurnal Teori dan Terapan Matematika Jurnal Pengabdian Sains dan Humaniora Malcom: Indonesian Journal of Machine Learning and Computer Science IC Tech: Majalah Ilmiah Parameter: Jurnal Matematika, Statistika dan Terapannya Kreativasi: Journal of Community Empowerment PADIMAS: Jurnal Pengabdian Masyarakat Journal of Mathematics, Computation and Statistics (JMATHCOS) Jurnal Jendela Matematika Jurnal Pendidikan MIPA Journal on Mathematics Education Trigonometri : Jurnal Matematika IC Tech: Majalah Ilmiah Media Pendidikan Matematika Babakti: Journal of Community Engangement

Simarmata, Justin Eduardo

Pendidikan Matematika, Fakultas Keguruan Dan Ilmu Pendidikan, Universitas Timor, Indonesia

Author-ID : 1527235

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Transportation Other

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Pengaruh Kemandirian Belajar terhadap Hasil Belajar Matematika Siswa Kelas XI SMA Negeri Taekas Menggunakan Analisis Structural Equation Modeling (SEM) Agnes L A Halla; Simarmata, Justin Eduardo; Yohanes Jefrianus Kehi
Trigonometri: Jurnal Matematika Vol. 2 No. 2 (2025): Edisi Juli
Publisher : Lppm Universitas Nurul Hud

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/xmw4tc87

Hasil belajar matematika siswa yang rendah masih menjadi tantangan dalam pendidikan, terutama pada mata pelajaran yang menuntut kemampuan pemecahan masalah. Salah satu faktor yang diduga mempengaruhi hasil belajar adalah kemandirian belajar, yakni kemampuan siswa untuk mengatur, mengontrol, dan memotivasi diri tanpa bergantung pada bimbingan eksternal. Penelitian ini bertujuan untuk menganalisis pengaruh kemandirian belajar terhadap hasil belajar matematika pada jenjang pendidikan SMA. Penelitian ini dilakukan dengan metode kuantitatif menggunakan desain ex-post facto dan pendekatan Structural Equation Modeling (SEM) untuk menganalisis pengaruh kemandirian belajar terhadap hasil belajar matematika. Dalam penelitian ini, data diperoleh dari 170 siswa kelas XI SMA Negeri Taekas Tahun ajaran 2024/2025. Hasil analisis menunjukkan bahwa variabel kemandirian belajar memiliki pengaruh signifikan terhadap hasil belajar matematika, dengan koefisien determinasi sebesar 58%. Hal ini berarti bahwa variabel kemandirian belajar berkontribusi sebesar 58% terhadap variasi hasil belajar matematika siswa kelas XI SMA Negeri Taekas.

An Identification of Conceptual and Procedural Understanding: Study on Preservice Secondary Mathematics Teacher Klau, Kondradus Yohanes; Siahaan, Meiva Marthaulina Lestari; Simarmata, Justin Eduardo
Al-Jabar: Jurnal Pendidikan Matematika Vol 11 No 2 (2020): Al-Jabar: Jurnal Pendidikan Matematika
Publisher : Universitas Islam Raden Intan Lampung, INDONESIA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/ajpm.v11i2.7310

Preservice mathematics teachers (PSMTs) need to master teaching material besides pedagogical competence. This knowledge is a combination of conceptual and procedural knowledge. Teachers should possess the ability to explain a concept, the reason for the concepts used, and the relationship among several concepts clearly and effectively to identify why the concept is used. This study aimed to identify the conceptual and procedural knowledge of PSMTs in Linear Algebra courses. Data collection was carried out through tests and interviews. The interview was conducted with several participants to clarify their test answers. The participants' interview answers revealed that they had difficulty in choosing the proper concept answering modified questions. Also, the participants tried to answer the question using a procedural approach. According to the findings, it is vital to construct appropriate teaching materials appropriate for the learning objective and material map concept.

The Implementation of Structural Equation Modeling (SEM) on Academic Ability and Family Environment in Twelfth-Grade Students' Selecting of Public Universities Taena, Vinsensia Gerosa; Simarmata, Justin Eduardo; Delvion, Eduardus Beo Seso
Fraction: Jurnal Teori dan Terapan Matematika Vol. 5 No. 1 (2025): Fraction: Jurnal Teori dan Terapan Matematika
Publisher : Jurusan Matematika, Fakultas Teknik, Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/fraction.v5i1.89

Public universities are the primary institutions chosen by students who have recently completed their secondary education to continue their studies. This decision is influenced by both internal and external factors. Several factors that affect the decision to pursue further education at a public university include academic ability and the family environment. The aim of this study is to identify the structural model between these variables using the Structural Equation Modeling (SEM) method. The data for this study were collected from 203 twelfth-grade students of Taekas Public High School in the 2023/2024 academic year. The analysis results indicate that the influence of the latent variable of academic ability on the interest in selecting a public university, based on the path coefficient value, is 0.68. This implies that the better the student's academic ability, the greater their interest in selecting a public university. The influence of the latent variable of family environment on the interest in selecting a public university, based on the path coefficient value, is 0.78. This suggests that the better the student's family environment, the greater their interest in selecting a public university.

APLIKASI ALGORITMA GENETIKA DALAM PENJADWALAN MATA KULIAH Mone, Ferdinandus; Simarmata, Justin Eduardo
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 15 No 4 (2021): BAREKENG: Jurnal Ilmu Matematika dan Terapan
Publisher : PATTIMURA UNIVERSITY

Making a class schedule becomes problem and takes a long time because of several obstacles such as the lack of lecture rooms, the lack of teaching staff, and the high of courses available in one semester. This study aims to apply genetic algorithms in making class schedules to facilitate the process of making class schedules. The method used is the waterfall method with the stages of the Software Development Life Cycle. The results of the application of genetics application show that the process of making course schedules can overcome the constraints of 1) space and time clashes, 2) lecturer conflicts, 3) Friday prayer times clashing, 4) there is a time when the lecturer wants for certain reasons, and 5) practicum in the laboratory room. By passing these constraints, the application of genetic algorithms in course scheduling is categorized as effective. Based on the results of running on 51 lecturers (51 chromosomes), the average running time 30 times in a row is 25.86 minutes so that the use of genetic algorithm applications in scheduling courses is efficient.

IMPLEMENTATION OF GENETIC ALGORITHM BASED ON JAVASCRIPT IN OBJECT ROUTING SHORTEST TOUR ON TIMOR ISLAND Simarmata, Justin Eduardo; Mone, Ferdinandus
BAREKENG: Jurnal Ilmu Matematika dan Terapan Vol 17 No 1 (2023): BAREKENG: Journal of Mathematics and Its Applications
Publisher : PATTIMURA UNIVERSITY

The purpose of this study is to apply a genetic algorithm using a programming language that can be used to determine the shortest route to tourist attractions in Timor Island, East Nusa Tenggara. The application of genetic algorithms expected to be able to obtain the shortest route information that is most effective, the route that do not take a long time for tourists, and the presentation of route information for tourists. The method used is genetic algorithm to build the shortest route system for tourist attractions in Timor Island. The results of the system application shown that the optimization of travel routes that have been built can provide convenience in choosing tourist travel routes in Timor Island. Route optimization can help the process of making routes from the first location of departure and the attractions to be visited. The system is also used to assist domestic tourists in getting to know the attractions of Timor Island for solutions the shortest route.

PENGARUH KECEMASAN MATEMATIKA TERHADAP PERSIAPAN TES UTBK SISWA SMAN 1 KEFAMENANU Laja, Yosepha Patricia Wua; Simarmata, Justin Eduardo
Jurnal Magister Pendidikan Matematika (JUMADIKA) Vol 4 No 2 (2022): Jurnal Magister Pendidikan Matematika (JUMADIKA)
Publisher : Prodi Magister Pendidikan Matematika Pascasarjana Universitas Pattimura Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30598/jumadikavol4iss2year2022page58-64

Math anxiety is a condition that inhibits students' ability to reach the potential of learning experiences and classroom math assessments, or both which are emotional responses and objects of fear or fear. This definition shows that math anxiety can be one of the internal factors felt by each individual, especially when approaching certain tests or exams. UTBK test is one type of test or exam that makes math a compulsory subject that is tested. Students need to be given preparation in the form of guidance to reduce math anxiety in order to get maximum results. The purpose of this study is to see if there is an influence between math anxiety on UTBK test preparation of SMAN 1 Kefamenanu students. The method used in this research is descriptive quantitative. The population of this study were all students of SMAN 1 Kefamenanu Class XII. While sampling was done randomly totaling 71 students. The results showed that there was a negative relationship between math anxiety and UTBK test preparation results (simulation). However, this relationship does not have a significant effect on the result of UTBK test preparation

Structural Equation Modeling: The Influence of School Environment on Students' Interest in Selecting State University Simarmata, Justin Eduardo; Mone, Ferdinandus; Chrisinta, Debora
JTAM (Jurnal Teori dan Aplikasi Matematika) Vol 8, No 2 (2024): April
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jtam.v8i2.19921

Despite prior research on student interest in colleges, this study focuses specifically on how the school environment, including individual factors, friends, and teachers, influences students' interest in attending a state university. Understanding these influences can help improve educational systems to better guide students towards higher education. This study aims to determine the influence of the school environment on students' interest in selecting a state university. This research employs a quantitative approach, utilizing structural equation modeling to analyze the relationships between variables. This study examines how a school environment, captured by twelve indicators across individual, friend, and teacher influences, impacts students' interest in state universities. Therefore, data retrieval based on questionnaires is designed accordingly based on latent variables. The sample in this study were 474 high school and vocational school students on the Indonesia-Timor Leste border, which is precisely located in Timor Tengah Utara Regency. The results showed that the school environment that came from individuals, partners, and teachers had a major influence on students' interest in choosing State University. Based on the analysis of structural equations, it was found that individual environments had a direct influence of 98%, partner environments had an indirect influence of 90%, and teachers also indirectly affected 71%. This study contributes to the field by quantifying the distinct influences of individual, peer, and teacher aspects of the school environment on students' interest in attending state universities. This knowledge can inform the development of targeted interventions to improve educational guidance and support student decision-making.

Pelatihan Penggunaan Aplikasi Geogebra bagi Siswa sebagai Sarana Pembelajaran Matematika : Pelatihan Penggunaan Aplikasi Geogebra bagi Siswa sebagai Sarana Pembelajaran Matematika Hijriani, Lailin; Simarmata, Justin Eduardo; Nifu, Martha Marsella; Venidora Solo, Maria Fransiska
Kreativasi : Journal of Community Empowerment Vol. 4 No. 2 (2025): Vol.4 No. 2, 2025 :September 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/kreativasi.v4i2.40192

Every concept in mathematics is related to one another. In addition, a concept can be a prerequisite for another concept. Mastery of a concept is needed to learn other concepts. One of the materials that is an important foundation in mathematics is the linear equation. The material on linear equations is the basis for understanding more advanced mathematical concepts, such as geometry, statistics, and calculus. Therefore, a strong understanding of this material is very important for the junior high school level. Referring to information from subject teachers and students in the mathematics subject of linear equations for class VIII A, St. Aloysius Catholic Junior High School Niki-Niki explained that there are still many students in class VIII A who have learning outcomes that are below the criteria set by the school. So a solution is needed to solve the problems being experienced, one of which can be done is to carry out community service, namely providing training in the use of the Geogebra application which can significantly help students build an understanding of the concept of linear equations. Keywords : Instructional Media, Geogebra Application

Fast Training Right on the National Examination question for Junior High School Elin, Lailin Hijriani; Simarmata, Justin Eduardo; Siahaan, Meiva Marthaulina Lestari; Mone, Ferdinandus; Seso Delvion, Eduardus Beo; Wua Laja, Yosepha Patricia; Napitupulu, Merlin Helentina; Astriani Dewi, Ni Putu Yuni
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 4 No. 2 (2019): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Community service activity aimed to provide an understanding of mathematical concepts consists of tips and tricks to solve exam questions for junior high school students. Furthermore, the background of the implementation of this training is to get students used to solve non-routine problems found during national examination, particularly in mathematics subject. This community service was carried out from October to November 2019 with 15 participants. This activity consists of three stages starting with the field assessment, the implementation stage and the last is final stage. In the field assessment stage, the servant determines the trainees to work national examination questions quickly and accurately that is specifically for junior high school students and determine where training will be held. The second stage is the implementation stage for exposuring to rapid strategies in administering national examination, question and answer, and national examination simulation. The final stage is the evaluation stage that is an implementation evaluation of theactivities that have been arranged based on each task that has been given .Based on the training activity that have been carried out it can be concluded that the training activity adds the knowledge and skills of students in working mathematics national examination questions. In addition, this training motivates students to be more active in learning mathematics and to be more mature in preparing for the upcoming national examination. Keyword: training, national examination questions, junior high school students.

Introduction to types of scientific writing research for science teachers at SMPS Gita Surya Eban Astriani Dewi, Ni Putu Yuni; Rita Sila, Vinsensia Ulia; Sele, Yunawati; Shidik, Muhammad Amran; Simarmata, Justin Eduardo
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 5 No. 2 (2020): ABDIMAS TALENTA : Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

The purpose of this community service activity is to provide an introduction to training in making scientific papers for teachers of Gita Surya Eban Junior High School. Furthermore, the background for the implementation of this socialization is to provide information about how to make educational and non-educational scientific papers, as well as provide information to teachers on the importance of making scientific papers as a prerequisite for promotion and class. This service activity has been carried out since November 2020 with 18 participants. This activity is carried out by introducing the types of research that are experimental in the laboratory.

Co-Authors Abi, Roberto Ade Mirza admin pythagoras, admin Agnes L A Halla Agustinus Giovandi Laki Agustinus Giovandi Laki Ahzan, Z.N. Ahzan, Zulkaidah Nur Aloisius Loka Son Astriani Dewi, Ni Putu Yuni Atencia, Bryant Bennet D Atencia, Bryant Bennet D. Baldemor, Milagros R. Bana, Marten Luter Bano, Elinora Naikteas Bantaika, Aris Benu, Kristiani Benu, Luky Wandika Bernadeta Buik Bete, Hendrika Bete, Maria Erlince Bifel, Maria Gabriela Bait Binsasi, Eva Bone, Dominifridus Cecilia Novianti Salsinha Chrisinta, Debora Debora Exaudi Sirait Dian Grace Ludji Elfrida Nailopo Elin, Lailin Hijriani Elisabet Ersamayori Foeh Elisabeth E Mayori Elizio Victor De Araujo Erlina, Nia Fallo, Kristoforus Ferdinan Rinaldo Tampubolon Ferdinandus Mone Fetronela Rambu Bobu Fitriani Fitriani Fitriani Gelu, Leonard Peter Gelu, Leonard Peter Gerhard-Wilhelm Weber Gusti Firda Khairunnisa H. Bete Hendrika Yeni Meti Hijriani, Lailin Hijriani, Lailin Hutubessy, Aditya I Manalu, Adelya Ida Bagus Putu Mardana Iis Aprianti Iis Aprianti Inggrid Mariana Usifa Jaya Santoso Jeniana Martha Prima Asa Josua Sahala Juventianus Kenjam Juventianus Kenjam Kehi, Sefrinus Kenjam, Juventianus Klau, Kondradus Yohanes Kondradus Yohanes Klau Kono, Metriana Maria Kristofel Bere Nahak Lailin Hijriani Lidu, Maria LUDGARDIS LEDHENG Luruk, Maria Gaudensia Made Santo Gitakarma Maneno, Regolinda Margareta Rodrigues Gomes Margarita Tampani Maria Brigita Niis Nana Maria Delviana Mali Maria Erwinda Kefi, Winda Maria Naimnule Marpaung, Rissa Isabella Taruli Marselinus Banu Matute, Alejandro Jr. V. Melkisedik Bukifan Melkisedik Bukifan Merlin Helentina Napitupulu Miko Purnomo Miko Purnomo mone, ferdinandus Moses Timutang Muhammad Amran Shidik Naimnule, Maria Naisau, Angela Cristina Natalia Emanuela Lelboy Nelciana Talan Nelciana Talan Ni Putu Yuni Astriani Dewi Ni Putu Yuni Astriani Dewi Ni Wayan Sukerti Nia Erlina Nifu, Martha Marsela Nifu, Martha Marsella Oktovianus Mamoh Olo, Maria Regina Pakaenoni, Lusilia Dos Santos Pasaribu, Revi Lestari Patrisius Bauk Peter Gelu, Leonard Pius Thaal, Pius Prudensius Manek Purba, Switamy Angnitha Rita Sila, Vinsensia Ulia Roberto Abi S. A. Purba Sanam, Thofilus Sari, Nur Nilam Seko, Herbert Sele, Yunawati Selestina Nahak Siahaan, Meiva Marthaulina Lestari Sila, Vinsensia Ulia Rita Silfester Faentaono Sirait, Debora Sitti Rosnafi’an Sumardi Sopbaba, Merlina Stanislaus Amsikan Switamy Angnitha Purba Switamy Angnitha Purba Taena, Vinsensia Gerosa Tavares, Ricson Thresia Trivict Semiun Uskono, Yunitha Centriana Venidora Solo, Maria Fransiska Vinsensia Ulia Rita Sila Wihelmina, Maria Wisrance Winda Ade Fitriya B Wua Laja, Yosepha Patricia Yakoba Yusina Muanley Yeni Missa Yohanes Jefrianus Kehi Zulkaidah Nur Ahzan Zulkaidah Nur Azhan

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