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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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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 (IN PRESS)
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.

Introducing English Grammar and Vocabulary by Applying Direct Method for the Students of GMIT Petra Kefamenanu Napitupulu, Merlin Helentina; Semiun, Thresia Trivict; Wihelmina, Maria Wisrance; Simarmata, Justin Eduardo
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 2 (2021): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Introducing English Grammar and Vocabulary by applying Direct Method for the students of GMIT Petra Kefamenanu aimed to attract the studentsâ€™ interesting of English learning and improve their ability on learning English. This community service activity had been held for one month, once a week in 90 minutes for every meeting. There were primary students who joined this community service activity which consisted of the students from elementary school at GMIT Petra Kefamenanu. The students were introduced and taught English by applying Direct method with various fun activities to make the students feel enjoy and joyful. The students learnt English Grammar and Vocabulary enthusiastically and the students practiced English step by step. This community service activity affected the studentsâ€™ ability on learning English. By introducing English Grammar and Vocabulary, the students got knowledge about grammar and vocabulary. From this activity, it could be concluded that the studentsâ€™ knowledge and ability about grammar and vocabulary has increased after introducing of English grammar and vocabulary by applying Direct Method.

Utilization of Using Secondhands Materials as A Learning Media in Understanding Improving of Building Space Materials in Class V of Elementary School Students Simarmata, Justin Eduardo; Hijriani, Lailin; Bantaika, Aris; Kehi, Sefrinus; Bana, Marten Luter; Sanam, Thofilus
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 6 No. 2 (2021): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

The aims of this community service activity is to improve students' learning ability in understanding the material of space building by utilizing secondhands materials as a learning media. Furthermore, the implementation background of this service is to improve students' reasoning power through the activity to familiarize students to solve building space problems concretely through using secondhand materials that are used as learning media. This activity consists of three steps starting with a field assessment, an implementation step and finally an evaluation step. In the field exploration step, the servant determines the activity participants, which is devoted to Fifth class of elementary school students, does administrative preparation, material questions preparation and then prepares a schedule. The second step is the implementation step in the form of a cursory exposure regarding the use of secondhand materials that can be used as a learning media for space building materials, then providing samples of space building questions for students to work on and questions discussion. The last step is the evaluation step in the form of evaluation toward activity implementation that have been compiled based on each of the tasks that have been given. Based on the activity that have been carried out, it can be concluded that this training activity increases students 'knowledge of the space building concept in a concretely and increases students' skills in working on tests related to space building. In addition, this training is to motivate students to be more active in mathematics learning.

Mentoring Of Documents Arrangement Of Educational Unit Accreditation Instrument 2020 In Preparation For School Accreditation Simarmata, Justin Eduardo; Fitriani; Thaal, Pius
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 1 (2022): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

This community service aims at providing mentoring toward accreditation team in SDK Biloe in relation to school accreditation. School accreditation is a comprehensive assessment process of the feasibility of schools, the results of which are manifested in the form of public accountability carried out by an independent and professional institution, called BAN S/M. Assistance activities for the preparation of the 2020 Education Unit Accreditation Instrument Document (IASP) at SDK Biloe were carried out with the stages of preparation, mentoring, and reflection. The implementation of accreditation can be viewed from two things that are assessed, namely a review of administrative compliance and secondly related to the performance of the education unit for efficiency and simple and accountable implementation. After mentoring, it was found that there was an increase in the understanding and awareness of school principals, teachers, and education staff about accreditation which is one of the factors in improving the quality of education. The level of understanding is manifested by the preparation of complete documents referring to IASP 2020, namely documents on the components of graduate quality, quality of learning processes, quality of teaching staff, and quality of school management.

Introducing and Training of the Mendeley Application as a Reference Tool in Student Scientific Articles Simarmata, Justin Eduardo; Mone, Ferdinandus; Kehi, Yohanes Jefrianus; Naimnule, Maria
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 2 (2022): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v7i2.8823

The introducing and training of the Mendeley application for students of the Mathematics Education Study Program, Faculty of Education, University of Timor aims to improve students' understanding and skills in using Mendeley application in writing research articles. This community service activity was carried out from June 2021 to August 2021 which takes place in the Hall of the Faculty of Education, University of Timor. The method applied in this training is lecture and practice. The activity was attended by 19 students of the Mathematics Education Study Program. This service activity is very useful students because they can understand the strategy of finding quality references using the Mendeley application. This can be seen from the way of citation and references using Mendeley in the articles of those students.

Improving Mathematical Ability and Skill Using Microsoft Excel in SMP Kristen Kefamenanu Simarmata, Justin Eduardo; Mone, Ferdinandus; Bete, Hendrika; Naimnule, Maria; Bone, Dominifridus; Chrisinta, Debora
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 8 No. 2 (2023): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v8i2.11283

Microsoft excel is application that used as a learning aid in schools. The use of microsoft excel has been very commonly used in education activity. Microsoft excel is very useful to help learning process for students and educators. Microsoft excel has been known as a spreadsheet worksheet application program that is very helpful in data processing and reporting activities. It is equipped with calculation and graph creation features in the form of a number processor with various formulations to process data automatically including basic calculations, data management and data creation. SMP Kristen Kefamenanu had many students in the school that are still who do not understand and skilled in using computers. The lack of use of computers in learning materials except for Learning Information Technology and Computers (ICT) which is generally used as an extracurricular subject. The purpose of this community service activity is to introduce microsoft excel as a mathematics learning tool carried out at SMP Kristen Kefamenanu. The results of the activity can be knowing the basics of microsoft excel and finding mean values, median and single data mode with microsoft excel. At every lesson activity that has been conducted, students can show improvement in operating microsoft excel and can be seen from the test results provided.

Using of Computer Technology for Enhancing Students Interest Learning in SMP Kristen Kefamenanu Chrisinta, Debora; Ludji, Dian Grace; Bobu, Fetronela Rambu; Gelu, Leonard Peter; Benu, Luky Wandika; Pakaenoni, Lusilia Dos Santos; Simarmata, Justin Eduardo
ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat Vol. 8 No. 2 (2023): ABDIMAS TALENTA: Jurnal Pengabdian Kepada Masyarakat
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/abdimastalenta.v8i2.12729

SMP Kristen Kefamenanu has facilities and infrastructure such as the availability of classrooms, computer laboratory rooms, libraries and others. There are obstacles in the implementation of school learning that is still centered on teachers and does not use computer-aided learning media. Therefore, service activities are carried out to increase the interest and ability of students in the learning process through the use of computer technology. Some of the activities carried out to solve problems in SMP Kristen Kefamenanu: a) providing training on Mathematics learning media for SMP Kristen Kefamenanu and b) providing training on computer technology in the form of MS. Excel Software to SMP Kristen Kefamenanu. The results of the service activities carried out show that there is an increase for students in understanding mathematical concepts such as addition, subtraction, multiplication and division involving complex numbers. In addition, the existence of computer-aided media also increases students' interest for learning process.

Implementasi Analytic Hierachy Process (AHP) Dalam Sistem Pengambilan Keputusan Pemilihan Metode Pembelajaran Riset Operasi Simarmata, Justin Eduardo; Chrisinta, Debora
JURNAL DIFERENSIAL Vol 5 No 2 (2023): November 2023
Publisher : Program Studi Matematika, Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jd.v5i2.10828

An implementation of learning methods have to be adjusted for each course including Research Operation. This course relies on the process of critical thinking, problem solving and concept understanding. The selection of an appropriate learning methods is required to obtain an optimum learning outcome. An analysis of an appropriate learning methods can be done using Analytic Hierarchy Process (AHP). In this paper, AHP is applied to analyse and hence make decisions on appropriate earning methods for studying Operations Research course. The criteria used consist of effectiveness (K1), lecturer ability (K2), specialization (K3) and test scores (K4). While the alternatives used are the learning methods carried out, namely: Problem Based Learning (a1), drill and exercise (a2) and Blended Learning (a3). Based on the priority weight of each alternative, it is obtained that the Problem Based Learning learning method has advantages in effectiveness criteria, Drill and Exercise have advantages in student test score results and Blended Learning has advantages in the ability of lecturers. In calculating the overall weight, Problem Based Learning gives the highest weight among the Drill and Exercise learning methods and Blended Learning.

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 Amran Shidik, Muhammad 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 Bone, Dominifridus Cecilia Novianti Salsinha Chrisinta, Debora Debora Chrisinta Dian Grace Ludji Elfrida Nailopo Elin, Lailin Hijriani Elisabet Ersamayori Foeh Elisabeth E Mayori Elizio Victor De Araujo Erlina, Nia Ferdinandus Mone 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 Ida Bagus Putu Mardana Ida Bagus Putu Mardana Iis Aprianti 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 Maneno, Regolinda Margareta Rodrigues Gomes Maria Brigita Niis Nana Maria Delviana Mali Maria Naimnule Maria Naimnule Maria Naimnule Marselinus Banu Melkisedik Bukifan Melkisedik Bukifan Merlin Helentina Napitupulu Miko Purnomo Missa, Yeni mone, ferdinandus Moses Timutang Muhammad Amran Shidik Naimnule, Maria Naisau, Angela Cristina Natalia Emanuela Lelboy Nelciana Talan Ni Putu Yuni Astriani Dewi Ni Putu Yuni Astriani Dewi Ni Wayan Sukerti 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 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 Taena, Vinsensia Gerosa Talan, Nelciana Tampani, Margarita Tavares, Ricson Thresia Trivict Semiun Ulia Rita Sila, Vinsensia 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 Yohanes Jefrianus Kehi Yuni Astriani Dewi, Ni Putu Zulkaidah Nur Ahzan Zulkaidah Nur Azhan

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