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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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DEVELOPING AN INSTRUMENT FOR RELATIONAL UNDERSTANDING ABILITY TEST AND INTERVIEW GUIDELINES Sai'da Tamalla Ali Akbar; Rezi Ariawan; Hayatun Nufus; Erdawati Nurdin
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 8 No 2 (2024): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i2.5043

Abstract

The development of this research instrument aims to produce an instrument for assessing the ability of relational understanding in the matter of two-variable linear equations (PLDV). The form of the research being carried out is research and development (Research and Development) in order to produce products measuring students' relational understanding abilities. The research location is at SMPN 37 Pekanbaru in the even semester of the 2022/2023 academic year. The object of research is an instrument for assessing the ability of relational understanding in class VIII2. The instrument for collecting data uses an instrument validation sheet. Data analysis shows that the 10 item items developed have a very valid category with an average of 0.83 and a reliability level of 0.92 which is in the very good category. In terms of difficulty level, half of the test instrument questions are in the category of moderate difficulty level and in the differentiating power of the questions, there are 4 questions that are in the bad category. So, basically questions that are appropriate for use in research are numbers 1,3,5,8 and 9. For the validity of the interview instrument, they are in a fairly valid category with a score of 0.8667. Keywords: relational understanding, validity, judgment
ANALYSIS OF STUDENTS' DIFFICULTIES IN SOLVING ALGEBRAIC OPERATION PROBLEMS BASED ON PROBLEM-SOLVING SKILLS IN GRADE VII AT SMP NEGERI 8 TAMBUN SELATAN Mayawi Farida; Hotmaulina Sihotang; Candra Ditasona
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 8 No 2 (2024): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i2.5131

Abstract

This study aims to analyze the difficulties faced by students when solving algebraic operation problems based on the criteria of problem solving ability. This study was conducted to understand the factors that master students' difficulties in solving algebraic problems. This research used descriptive method with qualitative approach. The research subjects consisted of 35 students of class VII-G at SMP N 8 Tambun Selatan. Data were collected through observation, tests, questionnaires, and documentation. Data analysis used the Miles and Huberman data analysis model. Data validity was checked through method tringulation. The results showed that of the 35 students studied: 1) 61% of students had difficulty in understanding the problem, 2) 57% of students had difficulty in planning the solution, 3) 73% of students had difficulty in carrying out the plan, and 4) 86% of students had difficulty in checking back. The main factors that influence these difficulties are students' understanding of basic algebraic concepts, difficulties in applying mathematical concepts to the algebraic context and underdeveloped problem solving skills. In understanding math problems and formulating the steps needed to solve them, students often face difficulties.
AN EXACT SYMPLECTIC STRUCTURE OF LOW DIMENSIONAL 2-STEP SOLVABLE LIE ALGEBRAS Edi Kurniadi; Kankan Parmikanti; Badrulfalah
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 8 No 2 (2024): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i2.5319

Abstract

In this paper, we study a Lie algebra equipped by an exact symplectic structure. This condition implies that the Lie algebra has even dimension. The research aims to identify and to contruct 2-step solvable exact symplectic Lie algebras of low dimension with explicit formulas for their one-forms and symplectic forms. For case of four-dimensional, we found that only one class among three classes is 2-step solvable exact symplectic Lie algebra. Furthermore, we also give more examples for case six and eight dimensional of Lie algebras with exact symplectic forms which is included 2-step solvable exact sympletic Lie algebras. Moreover, it is well known that a 2-step solvable Lie algebra equipped by an exact symplectic form is nothing but it is called a 2-step solvable Frobenius Lie algebra.
THE DEVELOPMENT OF ETHNOMATHEMATICS-BASED STUDENT WORKSHEETS (LKPD) IN MATHEMATICS FOR FOURTH GRADE STUDENTS Sudiyah Anawati; Seruni; Mia Intan Lestari
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 8 No 2 (2024): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i2.5336

Abstract

This study aims to determine the quality of Ethnomathematics-based math worksheet learning plans for fourth grade students of Madrasah Ibtidaiyah on the material circumference and area of flat shapes. The type of research used is research and development with the ADDIE model. The data source for this research was obtained from the validation results of three validators and the results of student questionnaires. The data collection technique uses a validation questionnaire. The results showed that this study used five steps, namely the Analysis, Design, Development, Implementation and Evaluation stages. The results of the validity of the Ethnomathematics-based mathematics LKPD were 77.46 in the good category. While the results of the student questionnaire assessment were 84.15 in the good category. The quality of Ethnomatematics-based math worksheets for fourth graders of Madrasah Ibtidaiyah can be seen from two aspects, namely the results of expert validation and the results of student questionnaires, both of which obtained good.
AN ARCHITECTURAL SYMMETRY IN BATAK TOBA TRADITIONAL HOUSES: A GEOMETRIC EXPLORATION Aulia Simanjuntak; Fuzi Anggriani; Indah Christine; Samuel Sianturi; Maria Margaretha
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 8 No 2 (2024): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i2.5342

Abstract

This research explores the concept of geometry in the architectural symmetry of Toba Batak traditional houses. The main focus is on the symmetry patterns that exist in the layout, decoration and structural elements of this traditional house. This research aims to investigate the concept of geometric symmetry in Toba Batak traditional houses, with a focus on cultural values, philosophy and visual harmony reflected in architectural design. Data was obtained through literature studies which included scientific journals, books, articles and previous research. The results of this research not only provide a deeper understanding of Indonesia's rich culture, but also have the potential to contribute to the preservation of Toba Batak traditional houses and cultural heritage as a whole. By understanding the role of geometric symmetry in this traditional house, this article opens insight into how this element is an integral part of the architectural heritage of the Toba Batak tribe, explores deeper cultural values, and introduces new literature in the context of traditional Indonesian architecture.
PROJECTION GROWTH TWO-WHEELED VEHICLES AT PT. ETERNAL DESIRE OF REPRESENTATIVES YOUR FAME WITH USE EQUALITY DIFFERENTIAL GROWTH MODEL POPULATION CONTINUOUS (EXPONENTIAL MODEL AND LOGISTIC MODEL) Faustianus Luan; Oktovianus R. Sikas; Leonardus Frengky Obe; Natalius Nahak
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 8 No 2 (2024): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i2.5412

Abstract

This research explains how to determine the growth model for two-wheeled vehicles entered and sold at PT. Hasjrat Abadi, representative of Kefamenanu. The author uses data obtained from PT. Hasjrat Abadi representing Kefamenanu from 2019 – 2022. This research aims to apply the Differential Equation model Continuous Exponential Model and Logistic Model which are used to predict the growth rate of two-wheelers entered and sold at PT. Eternal Passion of the Ministry of Famennanu Representative . The results of this research show that the exponential III model is the most accurate for predicting the number of vehicles in 2025 in the form of a vehicle equation with a relative growth rate of 21% for incoming vehicles while vehicles with a relative growth rate of 21% per year. In the logistic model, the logistic model I is the most accurate for predicting the number of vehicles coming in and sold in 2025 which will be as many vehicles coming in as the number of vehicles being sold while the number of vehicles being sold . Based on the calculation results of the two models, which has the smallest error (the best model) in predicting the number of two-wheeled vehicles entered and sold at PT. The Kefamenanu Representative's eternal desire in 2025 is a logistics model.
VALIDITY OF CONTEXTUAL TEACHING AND LEARNING (CTL) COMIC LEARNING MEDIA Teni Suriani; Andi Kurnia Riski Sanneng
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 8 No 2 (2024): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i2.5466

Abstract

The lack of student interest in learning mathematics is caused by the teaching materials used not being able to make students active so that student scores have not reached the Minimum Completeness Criteria (KKM). School teaching materials contain many questions with almost the same level of difficulty and solution methods so that students get a little bored of doing them. This research aims to develop mathematics learning media in the form of comics with Contextual Teaching and Learning (CTL) nuances to improve the mathematics learning outcomes of class VII students at SMP N 20 Jambi City. In this development it is expected to obtain valid mathematics learning media results. This type of research is development research that produces a product in the form of learning comics. The development of this comic uses the ADDIE model which consists of 5 stages, namely the Analyze, Design, Development, Implementation, Evaluation stages. The research subjects were class VII students of SMP N 20 Jambi City. Learning device validation was carried out by mathematics education experts and Indonesian language education experts. The overall validation results for comic media are very valid with a success rate of 85.52%. With this it can be concluded that the development of comic media with Contextual Teaching and Learning (CTL) nuances can be used as teaching material.
SCREENING FOR ELDERLY PEOPLE EXPERIENCING MALNUTRITION BASED ON THE MINI NUTRITIONAL ASSESSMENT (MNA) AT BATAM CITY NURSING HOMES IN DECEMBER 2022 Rahayu Yekti; Arvin Hardian Tambunan; Pratiwi Dyah Kusumo
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 8 No 2 (2024): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i2.5482

Abstract

Malnutrition refers to a condition when the body does not get enough of the necessary nutritional intake. Malnutrition in the elderly is a serious global health problem due to changes in the age pyramid throughout the world, especially the proportion of the number of elderly. The elderly are vulnerable to functional disorders, nutritional intake and economic problems. psychological and motoric As a result, it is very easy for elderly people to experience a decrease in nutritional intake which triggers nutritional problems and other disorders in the elderly. This research uses the Mini Nutritional Assessment (MNA) questionnaire to identify the nutritional status of the elderly and its relationship with elderly screening including food intake, as well as several disorders (mobility, psychological, neurological) in the elderly at Batam City Nursing Homes in December 2022. The research method used is descriptive analytic with a cross-sectional approach, the research sample consists of 65 respondents selected using total sampling techniques. The research results showed that based on the Mini Nutritional Assessment, 10 respondents (15.4%) had normal nutritional status, 30 people (46.2%) were at risk of experiencing malnutrition, and 25 people (38.5%) experienced malnutrition. The majority of elderly people experience a decrease in food intake, are still able to move (mobility), do not experience psychological disorders, but the majority have experienced neurological disorders (dementia).
USE OF SENGGANI LEAVES AS AN ALTERNATIVE MATERIAL FOR PRINTER REFILL INK THAT IS LOW VOC (VOLATILE ORGANIC COMPOUND) ENVIRONMENTALLY FRIENDLY Trilia Ananta Pramita Sari; Rewan Jayadi; Rika Agustin; Putri Ramanda; Nurhasana; Eka Angasa
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 8 No 2 (2024): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i2.5574

Abstract

This study aims to determine the content of senggani leaves and utilize senggani leaves as a raw material for printer refill ink. This can increase the utilization of senggani leaves into products that are low in VOC levels. The method used in this study the first test is done, the ink absorption rate test on HVS paper is done by using a medium such as paper by comparing the length of the absorption path ∆x with a time interval t during the absorption process. The next test is the ink performance test using the volume of aqueous solvent and comparing the quality of the ink obtained. The ink consists of 3 components, namely pigment, solvent, and thickening agent the pigment used in this study is carbon obtained from the carbonization of senggani leaves, 98% alcohol is used as a carbon solvent as a thickener and adhesive in the form of gum arabic. The variation of carbon used is 1 gram, 2 grams, and 3 grams, while the volume of aquadest, the volume of alcohol, and gum arabic mass is made fixed that is sequentially 15 mL, 3 mL, and 3.5 grams. The test results of senggani leaf ink with the best composition resulted in solvent and mass variation values by the standard. Meanwhile, from the results of the print test, the resulting printer ink has provided good print and color results as well as commercial ink and does not easily fade if exposed to water. Keywords: senggani leaf, ink, pigment.
ANALYSIS OF THE ANALYTIC HIERARCHY PROCESS (AHP) METHOD IN DETERMINING PRIORITY DECISIONS FOR HANDLING STUNTING IN BENGKULU PROVINCE Rewan Jayadi; Ramya Rachmawati; Siska Yosmar
EduMatSains : Jurnal Pendidikan, Matematika dan Sains Vol 8 No 2 (2024): Januari
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Kristen Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33541/edumatsains.v8i2.5577

Abstract

Statistical Processing Data 2021 shows that technical efficiency in stunting intervention costs in Bengkulu Province always achieves efficient results in the technical system, however, for that reason, it is technically inefficient in costs. This research aims to analyze the Analytical Hierarchy Process (AHP) method in deciding to determine priorities for handling stunting in Bengkulu Province, which will then get results according to the level of needs of each district/city. This study used the AHP method to determine priorities for handling stunting by collecting primary data directly from respondents, namely the Bengkulu Province Health Service. Validity and reliability tests are used before researching to obtain good research results suitable for development. The results of the consistency test showed that the Consistency Ratio (CR) value for each criterion and the alternative was, which means that the filling and results of the questionnaire for respondents had obtained results that met the requirements. The results of the analysis of preferences for criteria/alternatives show that the main priority in making decisions for handling stunting in Bengkulu Province is North Bengkulu as the main priority, followed by South Bengkulu, Seluma, Rejang Lebong, Kepahiang, Central Bengkulu, Bengkulu, Mukomuko, Lebong, and finally Kaur. Keywords: Analytic Hierarchy Process, Consistency Ratio, stunting, Bengkulu Province.

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