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Edumatsains
Published by Universitas Kristen Indonesia
ISSN : 25277642     EISSN : 25277235     DOI : -
Core Subject : Science, Education, Agriculture,
Agriculture, Biological Sciences & Forestry Chemistry Education Mathematics Physics
Jurnal EduMatSains merupakan wadah untuk menampung dan mempublikasikan hasil karya baik berupa hasil penelitian maupun kajian teori yang original dalam ruang lingkup pendidikan matematika dan pendidikan sains (fisika, kimia, biologi) serta ilmu matematika dan ilmu sains (fisika, kimia, biologi) bagi semua civitas academika khususnya dosen, guru, peneliti dan mahasiswa. Jurnal EduMatSains terbit sebanyak dua kali dalam satu tahun (Juli dan Januari). Jurnal EduMatSains diterbitkan Oleh Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia.
Arjuna Subject : -
Articles 359 Documents
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Teorema Titik Tetap untuk Pemetaan Kannan dan Chatterjea pada Ruang Metrik Modular Bernilai Kompleks Mariatul Kiftiah; Yudhi Yudhi
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 7 No 2 (2023): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v7i2.4219

Abstract

In this paper, inspired by fixed point concepts of complex valued modular metric space, we introduce Kannan complex and Chatterjea complex mappings. Using this new idea, some fixed point theorems involving both of these contractive mappings are established. Furthermore, existence and uniqueness of fixed point for Kannan complex and Chatterjea complex mappings on complex valued modular metric space is proved.
Penerapan Metode Continuous Review pada Pusat Oleh-Oleh Keripik Rumah Adat Minang Nella Oktavia Rani Br Sirait; Putri Khairiah Nasution
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 7 No 2 (2023): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v7i2.4282

Abstract

Pusat Oleh-Oleh Keripik Rumah Adat Minang is a business engaged in the production of sweet potato chips, and selling various types of snacks, this business is located in Medan City, North Sumatra. This study aims to compare the total inventory costs of the company's policies and the Continuous Review method and determine the optimal order size. The data obtained is inventory data for 5 types of snacks in 2021. The method used is the continuous review method, based on the results of calculations for 5 types of snacks, the total inventory cost according to company policy is Rp.792,631,977/year, while the total inventory cost using the continuous review method is Rp.773.799,089/year. The results showed that the continuous review method has an optimal total inventory cost, so the company can save on expenses of Rp. 18,832,888 or 2,37% for 5 types of snacks. To facilitate the calculation in this study was conducted using the help of MATLAB software.
Analisis Sistem Antrian pada Bank Negara Indonesia Kantor Cabang Kawasan Industri Medan Paskah Riny Sirait; Parapat Gultom
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 7 No 2 (2023): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v7i2.4283

Abstract

The problem that occurs at Bank Negara Indonesia of Medan Industrial Area Branch Office is the occurrence of unemployed tellers at certain hours. The purpose of this study is to determine the queue system at Bank Negara Indonesia of Medan Industrial Area Branch Office and to find out the optimal number of tellers at the bank. The structure of the queue model that occurs at Bank Negara Indonesia of The Medan Industrial Area Branch Office is a Multi Channel-Single Phase by applying the discipline of the First Come First Serve queue. The bank has 4 tellers with an average customer arrival value (λ) of 20 people per hour and an average service level (μ) of 22 people per hour. The results of data processing show the arrival pattern of Poisson-distributed customers and the general distribution service pattern. This study resulted in a queueing model (M / G / 4): (FCFS / ∞ / ∞). The optimal number of tellers in providing customer service is to reduce 1 teller. Based on the calculation results with only 3 tellers, it can reduce the probability of the teller being unemployed from the initial one by 40.25% to 39.97%.
Analisis Kesalahan dalam Menyelesaikan Soal Trigonometri pada Siswa Kelas X SMA Ekasakti Padang Dina Novarina Perdana; Khurnia Budi Utami
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 7 No 2 (2023): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v7i2.4328

Abstract

This research is motivated by the number of students who make errors in solving trigonometry problems. This can be seen from the low average value of daily trigonometry tests for class X students of SMA Ekasakti Padang in the 2021/2022 school year. Teachers were necessary to know in advance what caused the student's mistakes. This study aims to (1) determine the causes of errors in class X SMA Ekasakti Padang in solving trigonometry problems, and (2) determine the percentage of errors made by class X students at SMA Ekasakti Padang in solving trigonometry questions. This type of research is descriptive. The research subjects in this study were students of class X SMA Ekasakti Padang. Data analysis in this study was divided into two, namely (1) written test results data were analyzed by calculating the percentage of students who made mistakes in solving trigonometric questions, and (2) interview data analysis was carried out by reducing data, presenting data, and concluding. The mistakes made by students in solving trigonometry problems are conceptual errors and algorithm errors. Conceptual errors were made by 83.33% of students, where the most incorrect concept was the triangle concept. Furthermore, the principle error is 66.67%, and the algorithm error is 50%. The causes of errors made by students in solving trigonometry problems are carelessness and haste, poor understanding of students on questions, lack of understanding of prerequisite concepts related to questions, and interpretation of the meaning of the questions incorrectly or incorrectly in reading the questions.
Validitas Media Pembelajaran Matematika Menggunakan Aplikasi Powtoon Nela Sari Yolanda; Niscaya Laia
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 7 No 2 (2023): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v7i2.4354

Abstract

The role of learning media in the learning and teaching process is an integral part that cannot be separated from the world of education. Learning media is anything that can be used to channel messages from senders to recipients, so that they can stimulate students' thoughts, feelings, concerns, and interests to learn. Seeing the importance of media in learning, it is necessary to develop learning media that are valid and suitable for use in the learning process. In an effort to develop learning media, validation is carried out on the media that is being developed, the purpose of validating is to find out and correct errors that exist in the learning media being developed. This study aims to determine the validity of mathematics learning media using the powtoon application. This type of research is research and development (Research and Development). Based on the results of the validation, it shows that the learning media developed is valid, it can be seen from the results of the validity given by the experts (validators), both subject matter experts and language experts. The validation results obtained were 81% for material aspects and 90% for language aspects.
Keakurasian Metode Shooting untuk Menyelesaikan Masalah Kondisi Batas pada Persamaan Sturm-Liouville Ummu Habibah; Nielda Alifah Mulyanti
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 7 No 2 (2023): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v7i2.4371

Abstract

Pada penelitian ini dibahas keakurasian metode shooting/tembakan untuk menyelesaikan masalah kondisi batas Dirichlet pada persamaan Sturm-Liouville yang berbentuk persamaan diferensial orde dua, dengan kondisi batas Dirichlet. Persamaan Sturm-Liouville diselesaikan numerik menggunakan metode shooting. Simulasi numerik dilakukan dengan beberapa nilai (ukuran langkah). Keakurasian metode shooting diperoleh dengan cara dibandingkan solusi numeriknya terhadap solusi eksak, serta dibandingkan dengan solusi numerik menggunakan metode beda hingga. Hasil simulasi menunjukkan bahwa metode tembakan (shooting) menghasilkan solusi numerik yang lebih baik untuk mengaproksimasi masalah kondisi batas pada persamaan Sturm-Liouville dibandingkan metode beda hingga karena menghasilkan kesalahan numerik yang lebih kecil.
Struktur Vegetasi Habitat Tumbuhan Endemik Begonia kelimutuensis di Taman Nasional Kelimutu Yosephina Payu Wao; Melania Priska; Natalia Peni
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 7 No 2 (2023): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v7i2.4404

Abstract

Begonia kelimutuensis is an endemic species of Kelimutu National Park, Ende Regency, East Nusa Tenggara. Since it was designated as an endemic plant, this species has become one of the attractions for visitors to the Kelimutu National Park. However, research studies on this species are not widely known, so further research is needed. This study aims to determine the structure of the vegetation, the composition of plant species in the habitat of Begonia kelimutuensis and the Important Value Index (INP). The research method used is the plotted line method, with 20m x 20m plots used to collect tree species data, 10m x 10m plots used to collect pole type data, 5m x 5m sample plots used to collect sapling type data, and sample plots The size of 2m x 2m was used to collect data on the type of seedling with a distance between plots of 20m, which was placed along the observation path. Data analysis was carried out using the vegetation analysis method that calculates frequency, density, dominance, relative frequency, relative density, relative dominance, and Important Value Index (INP). The results showed that the composition of tree species in this area consisted of 44 species with a vegetation structure consisting of trees, poles, saplings and seedlings. The highest INP at the seedling level was Suregada sp. by 72.33%; at the sapling level is Suregada sp. by 83.86%; at the pole level is Chyathea contaminans of 79.15%; and at the tree level is Schfflera lucida by 58, 33%.
Profil Komunikasi dan Profil Kerjasama Lulusan Program Studi Pendidikan Biologi Universitas Terbuka Dyah Aniza Kismiati; Leonard R. Hutasoit; Anna Ratnaningsih
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 7 No 2 (2023): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v7i2.4453

Abstract

The success of a study program in a university can be seen from the quality of the graduates. If the quality and performance of graduates are good, the study program can be said to be successful. This is also true in remote collegesuch as the Universitas Terbuka. In order to know this, this study was conducted which aimed to determine the performance of graduates of the Biology Education Study Program, especially on the profile of communication ability and the ability to work with graduates. The sample of this study was 35 graduate users. This sample was obtained from a random sampling technique. Data is obtained through questionnaires and interviews conducted with graduates and graduate users. Next, the data are analyzed descriptively. The results showed that the profile of communication ability and cooperation of graduates was considered very good both of from the self-reflection of graduates and from graduate users. This is based on descriptive data analysis where graduates and graduate users strongly agree and agree with all statements in the profile of communication and cooperation skills.
Penerapan Metode Pembelajaran Project Based Learning Menurut Kurikulum Prototipe untuk Pembelajaran Matematika yang Bermakna Windi Kristiato Yohanis Bell; Kurnia Putri Sepdikasari Dirgantoro
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 7 No 2 (2023): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v7i2.4493

Abstract

Most students think that the hardest subject to understand is math. It happened when the student did not get the meaning of doing math. It was made worse by the covid situation, students more and did not get any value. Even though the government had provided curriculum and lesson method options to be held in class, still it can be maximized to create meaningful math lessons. Therefore, this research focuses on the application of the Project-Based Learning (PjBL) method based on a prototype curriculum to make math lessons more meaningful. The research method that will be used is descriptive qualitative. Students must get meaningful math lessons to find the greatness of God by doing math in their daily lives. Finally, students also glorify God. The research result is, PjBL based on the prototype curriculum method can help make learning mathematics more meaningful. The writer suggests for schools, hold training on using PjBL based on the curriculum prototype method, for teachers to apply this method in abstract topics, and for the next researcher to research the application of the PjBL method based on another curriculum.
Analisis Keefektifan Pendekatan Matematika Realistik untuk Meningkatkan Motivasi Belajar Matematika Siswa Lilis Arini; Dewi Purnama Sari
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 7 No 2 (2023): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v7i2.4553

Abstract

The purpose of this research is to find out whether students' motivation to learn mathematics can be increased by using a realistic mathematics approach. With a total of 26 students, this research was conducted during an odd semester of the 2022/2023 academic year. This research uses a qualitative descriptive research type. In trial I, the average score of the questionnaire on students' motivation to learn mathematics was 73.51 percent. In trial II, the average score of the questionnaire on students' motivation to learn mathematics increased to 84.61%. Students' motivation to learn mathematics with a realistic approach increased by 9.83 percent based on the results of trial I and trial II. Thus, it can be concluded that the realistic mathematical approach is effective in increasing students' motivation towards learning mathematics.

Page 17 of 36 | Total Record : 359

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