Garuda - Garba Rujukan Digital

p-Index From 2021 - 2026

12.545

P-Index

This Author published in this journals

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

Published : 103 Documents Claim Missing Document

Claim Missing Document

Articles

1 2 3 4 5

Pengenalan & Pelatihan “Fast Math Tricks” Bagi Siswa Sekolah Dasar Jemaat GMIT Petra Kefamenanu Justin Eduardo Simarmata; Merlin Helentina Napitupulu; Thresia Trivict Semiun; Maria Wisrance Wihelmina
ABDIMASKU : JURNAL PENGABDIAN MASYARAKAT Vol 4, No 2 (2021): Mei 2021
Publisher : LPPM UNIVERSITAS DIAN NUSWANTORO

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33633/ja.v4i2.220

Introduction and training of “Fast Math Tricks” for elementary school students in GMIT Petra Kefamenanu congregation aims to develop students' thinking skills and interest in mathematics. This community service activity is carried out for one month, with a meeting duration of 90 minutes per meeting. Students who take part in the activity are students who are considered capable of participating in the training, come from the sixth grade of elementary schools in the GMIT Petra Kefamenanu congregation. The method of implementing this activity is the method of testing, lecturing, and practice. The activity began with an introduction to "Fast Math Tricks", followed by training on "Fast Math Tricks". With the introduction and training of "Fast Math Tricks", students understand and like mathematics more and will become provisions for students for education at the next level. Student response is very good in implementing activities because "Fast Math Tricks" is a new thing for them, in addition to the introduction of "Fast Math Tricks", it can provide benefits and convenience for elementary school students in doing calculations. From the introduction and training activities of fast math tricks, it was concluded that students were 87.50% helped, 8.33% was quite helpful, and 4.17% were not helped by the application of fast math tricks in calculating multiplication and division.

ANALISIS KESALAHAN SISWA DALAM MENYELESAIKAN SOAL PERSAMAAN GARIS LURUS BERDASARKAN TAHAPAN NEWMAN Bernadeta Buik; Hermina Disnawati; Justin Eduardo Simarmata
MES: Journal of Mathematics Education and Science Vol 7, No 2 (2022): Edisi April
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v7i2.5121

The purpose of this research was to determine the types of errors and the causes of students in solving math story problems with straight-line equations based on Newman's analysis. This study used the descriptive qualitative method. The students who were the subjects of the research were three students of class VIII-B of SMP Negeri 1 Atap Obor which were taken from a total of 19 students. The instrument used was a written test question with a total of five description questions while the interview technique was carried out with selected students to ascertain the types of errors made in solving story questions. Data analysis includes data reduction, data presentation, and concluding. The results showed that three subjects were randomly selected based on the type of error Newman's analysis as follows: the first subject (S1) represented students in making mistakes in four stages, including the reading stage (T1), the problem understanding stage (T2), process skills (T4), and the final answer writing stage (T5). The mistakes made by the second subject (S2) who represent students in making mistakes in three stages, including the stage of understanding the problem (T2), the stage of process skills (T4), and the stage of writing the final answer (T5). The mistakes made by the third subject (S3) who represent students in making mistakes in the three stages, including the reading problem stage (T1), the process skills stage (T4), the final answer writing stage (T5).

THE COVID-19 PANDEMIC ERA: THE EFFECTIVENESS OF GOOGLE CLASSROOM MEDIA IN DISCRETE MATHEMATICS LEARNING IN TERMS OF STUDENT LEARNING OUTCOMES Justin Eduardo Simarmata; Ferdinandus Mone
MES: Journal of Mathematics Education and Science Vol 7, No 1 (2021): Edisi Oktober
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v7i1.4381

One of the learning media in the network that is often used in addressing various learning problems during the Covid-19 pandemic is the use of google classroom media. The purpose of this study is to find out the effectiveness of google classroom media in discrete mathematics learning in terms of learning outcomes. The type of research conducted is quasi experiment research to see the consequences of a treatment by comparing the learning outcomes of two class groups (independent class) or two time groups with the same class (dependent class). The research design is applied using one group pretest-posttest design. The samples in this study were all the fourth semester class A students who took discrete mathematics courses at the S1 level of the Mathematics Education Study Program of the Faculty of Education, Timor University which consisted of 40 students. Sample data was processed with descriptive analysis and average difference test using paired sample t test and N-Gain Score. The research results showed that learning outcomes by using google classroom media is quite effective based the students’ test results. The students’ learning outcomes after learning by applying google classroom media were higher than students’ learning outcomes before learning by applying google classroom media.

PENYELESAIAN MASALAH TRAVELLING SALESMAN PROBLEM DENGAN MENGGUNAKAN BAHASA PEMROGRAMAN PASCAL Debora Exaudi Sirait; Justin Eduardo Simarmata
MES: Journal of Mathematics Education and Science Vol 6, No 1 (2020): Edisi Oktober
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v6i1.3126

Dalam hal pendistribusian barang, setiap kantor pos pasti memiliki wilayah distribusi tujuan. Begitu juga dengan Kantor Pos di Jl. Sutomo no. 2 Pematangsiantar, dimana mereka bertugas mendistribusikan barang di wilayah Kota Pematangsiantar yang merupakan puncak simalungun. Agar barang tersebut dapat didistribusikan dengan cepat maka diperlukan rute yang efisien dari segi jarak. Pendistribusian barang dimulai dan diakhiri di Kantor Pos kota Pematangsiantar. Masalah tersebut dapat dikategorikan sebagai Travelling Salesman Problem (TSP) yaitu suatu masalah dimana seorang salesman harus mengunjungi semua daerah yang setiap daerahnya hanya dikunjungi satu kali, dan harus kembali kekampung halaman. Tujuan dari penelitian ini adalah untuk mengetahui waktu tersingkat dalam menyampaikan pesanan, membantu perusahaan dalam menekan biaya operasional, mendapatkan jalur terpendek menggunakan dua cara yaitu dengan cara perhitungan manual dan bahasa pemrograman sehingga menjadi bahan acuan bagi mahasiswa Universitas HKBP-N Pematangsiantar, Kantor Pos, serta perbandingan efisiensi menggunakan pascal.

ANALISIS KESALAHAN DALAM MENYELESAIKAN SOAL MATEMATIKA SISTEM PERSAMAAN LINEAR TIGA VARIABEL Natalia Emanuela Lelboy; Selestina Nahak; Justin Eduardo Simarmata
MES: Journal of Mathematics Education and Science Vol 7, No 1 (2021): Edisi Oktober
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v7i1.4347

This study aims to identify and describe the erros experienced by students in solfing comparison questions and to determine the causal factors in completing the comparison material for studenst of SMA Stella Gratia Atambua. The research method used is descriptive qualitative method. The subjects in this study were students of class X SMA Stella Gratia Atambua for the 2020/2021 school year. The data collection techniques used were tests and interviews. The instruments in this study was a test item in the form of a description with 3 numbers of questions and an interview guide. Based on the results of the study, it was found that the average error made by students in the type of reading error 33,33%, the comprehension error was the average error percentage of the error was 45%, the transformation error was with The average percentage of errors is 69%, the error in processing skills is 78%, and the encoding error in writing answers is the average percentase of errors is 80 %.

PEMANFAATAN APLIKASI GEOGEBRA DALAM PEMBELAJARAN KALKULUS I PADA MAHASISWA PROGRAM STUDI PENDIDIKAN MATEMATIKA, UNIVERSITAS TIMOR Justin Eduardo Simarmata; Debora Exaudi Sirait
MES: Journal of Mathematics Education and Science Vol 6, No 1 (2020): Edisi Oktober
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/mes.v6i1.2624

To find out the increase in the ability of mathematical understanding in learning calculus I semester II students of mathematics education study programs on the subject of functions and limits, we need a learning media in the form of Geogebra applications. Geogebra applications is one of the calculus I learning media that can be used to demonstrate or visualize mathematical concepts as well as a tool to construct concepts mathematically. The sample in this study was 54 seconds semester students of the mathematics education study program, Faculty of Education, University of Timor using purposive sampling techniques. The method used in this study is a pre-experimental method with one group pretest-posttest design. Analysis of the data in this study used the non-parametric Mann Whitney test. Based on the results of the N-gain score test, it shows that the average N-gain score is 58.4251 or 58.4%, which results are included in the quite effective category. Thus, the use of Geogebra applications in learning calculus I in the second-semester students of mathematics education study programs is quite effective in improving students' mathematical understanding of learning calculus I.

SOSIALISASI PENGERJAAN SOAL UTBK DENGAN TEKNIK MATH MAGIC DI SMA NEGERI PERBATASAN KEFAMENANU Justin Eduardo Simarmata; Lailin Hijriani; Yosepha Patricia Wua Laja
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 4, No 2 (2021): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v4i2.455-461

The purpose of this community service activity is to provide socialization on the work of UTBK with math magic techniques in SMAN 1 and SMAN 2 Kefamenanu. Furthermore, the background of this socialization is to improve the students' reasoning ability through familiarizing themselves with students solving non-routine problems found during the implementation of UTBK, especially in mathematics. This community service was carried out from January to March 2020 with 40 participants. This activity consists of three stages starting with the assessment of the field, the implementation phase and finally the evaluation phase. In the field assessment stage, the servant determines the participants of the socialization, which is specifically for high school students of class xii, prepares administration, prepares materials and UTBK questions and then prepares a schedule. The second stage is the implementation phase in the form of a brief exposure to the UTBK, then giving samples of the UTBK questions for students to work on and scribing questions. The last stage is the evaluation stage in the form of an evaluation of the implementation of activities that have been arranged based on each task that has been given. Based on the socialization activities that have been carried out it can be concluded that these training activities increase students' knowledge about UTBK and add student skills in working on math UTBK questions . In addition, this training motivates students to be more active in learning mathematics and to be more mature in preparing for the upcoming UTBK.

Bimbingan dan Pelatihan Penalaran Matematika Jenis Soal UTBK bagi Siswa SMA di Masa Pandemi Covid-19 Justin Eduardo Simarmata; Zulkaidah Nur Ahzan
Jurnal Pengabdian Pada Masyarakat Vol 6 No 4 (2021)
Publisher : Universitas Mathla'ul Anwar Banten

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30653/002.202164.853

GUIDING AND TRAINING OF MATHEMATICAL REASONING: CBT QUESTIONS FOR HIGH SCHOOL STUDENTS DURING THE COVID-19 PANDEMIC. The spread of the Covid-19 outbreak in Indonesia has disrupted the education sector, especially in the learning process for high school students of class XII who will face various exams to enter state universities. The solution offered to continue the learning process during this pandemic is to carry out online distance learning from their residences. The purpose of this community service activity is ordering that student at SMA Negeri 1 Kefamenanu are able to recognize and master strategies to answer UTBK questions with mathematical reasoning, and solve these problems with good time management. This is very important, considering that students are not used to completing TKA and TPS UTBK questions during learning at school. The method of implementation in this community service activity is in the form of guidance and training for all students of class XII Science, XII Social Studies, and XII Language SMA Negeri 1 Kefamenanu. Activities are carried out in the form of guidance and training using an online system through the zoom application for one month. The online system is carried out in order to minimize the spread of Covid-19 among students. From the calculation results, it is obtained that the pre-test average is smaller than the post-test average so it can be concluded that guidance and training on mathematical reasoning for the types of UTBK questions has succeeded in improving better results for students, especially as preparation for facing UTBK, which results will be used to follow SBMPTN 2021. Besides that, the participation rate (attendance) of participants in each meeting is more than 90% of the total students.

PELATIHAN MENDELEY DESKTOP UNTUK PENULISAN KARYA TULIS ILMIAH BAGI GURU-GURU SMP NEGERI WINI Justin Eduardo Simarmata; Ni Putu Yuni Astriani Dewi; Vinsensia Ulia Rita Sila; Muhammad Amran Shidik; Yunawati Sele
Martabe : Jurnal Pengabdian Kepada Masyarakat Vol 5, No 4 (2022): Martabe : Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Muhammadiyah Tapanuli Selatan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31604/jpm.v5i4.1355-1363

This community service activity aims to train skills and improve bibliography writing skills using the Mendeley Desktop in writing scientific papers for Wini State Junior High School teachers. Community service activity was carried out at Wini State Junior High School, North Central Timor Regency, East Nusa Tenggara. The training method is carried out in the following stages: lectures, demonstrations, discussions/questions and answers. The training activities were carried out face-to-face with the training participants as many as 13 Wini State Junior High School teachers. Based on the results of the training activities, it was found that the training of using Mendeley Desktop has a positive impact toward development of teachers' abilities in writing scientific papers. The results of training activities related to the understanding of teachers in the technical use of Mendeley Desktop, a significant increase was obtained. Prior to the training, 8% of the training participants had a good understanding, 15% had sufficient understanding, and 77% had a poor understanding of using Mendeley Desktop in writing scientific papers. After the training, 62% of the participants had a very good understanding. 23% of participants have good understanding, the other 15% of participants have sufficient understanding. Thus, it can be concluded that the Mendeley Desktop application training was successful in carrying out knowledge transfer to the trainees.

PELATIHAN TES KEMAMPUAN AKADEMIK BAGI SISWA SMA KELAS XII UNTUK PERSIAPAN UTBK SBMPTN 2022 Justin Eduardo Simarmata; Yosepha Patricia Wua Laja; Cecilia Novianti Salsinha; Yohanes Jefrianus Kehi; Agustinus Giovandi Laki; Margareta Rodrigues Gomes; Jeniana Martha Prima Asa; Elinora Naikteas Bano; Yakoba Yusina Muanley; Hendrika Yeni Meti
Jurnal Abdi Insani Vol 9 No 2 (2022): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v9i2.557

The Computer-Based Test Exam (UTBK) is a computer-based written test which results are used for the Joint Selection of State Universities (SBMPTN). Based on the results of interviews with the school conducted in January 2022, the preparation of students to face the UTBK 2022 has not been maximized. This happens because there are no facilities as a place for students to practice in preparing the material properly. Besides, students only study routine material according to the textbook, while the UTBK questions are quite different from the material students get in class. The purpose of this activity is to introduce and train strategies in solving the Academic Ability Test (TKA) in preparation for the 2022 UTBK-SBMPTN for high school students Class XII SMA Negeri 1 Kefamenanu. The implementation method in introduction and training activities consists of several stages, including: observation, preparation for introduction and training, implementation of introduction and training, and evaluation of activities. The introduction and training of UTBK TKA questions for Class XII high school students was carried out well. It can be seen from the average student attendance reaching 95.3%. Based on the results of the evaluation of activities before and after the training was given, it was found that the average posttest was higher than the average pretest for each class. The skills and strategies of the trainees in solving the UTBK TKA questions have increased. Based on the results of the pretest and posttest of the training participants, this training activity is successful as a solution to the partner's problem, namely that the preparation of students to face the 2022 UTBK SBMPTN is not optimal.

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

Title

Found 103 Documents
Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title Search

Found 103 Documents Search

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Title

Found 103 Documents
Search