EduMatSains : Jurnal Pendidikan, Matematika dan Sains 2021-01-21T05:08:07+00:00 Nya Daniaty Malau, M.Si Open Journal Systems <p>Merupakan jurnal untuk mempublikasikan hasil karya berupa hasil penelitian, kajian teori maupun hasil review yang original dan memiliki kebaharuan sebagai sumbangan bagi ilmu pengetahuan dalam ruang lingkup pendidikan matematika, pendidikan fisika, pendidikan kimia, pendidikan biologi dan juga meliputi hasil-hasil penelitian pada bidang ilmu fisika, kimia maupun biologi.&nbsp;<br><strong>Edumatsains</strong> terbit sebanyak dua kali dalam satu tahun, yaitu bulan januari dan bulan juli. Jurnal ini diterbitkan oleh Fakultas Keguruan dan Ilmu Pendidikan Universitas Kristen Indonesia. <strong>Edumatsains</strong> telah terindeks <a href=";hl=en" target="_blank" rel="noopener">Google Scholar</a>, <a href="" target="_blank" rel="noopener">Portal Garuda</a> dan<a href="" target="_blank" rel="noopener"> Sinta-4</a>.</p> <div style="float: left; margin-right: 1em;">&nbsp;</div> PEMBELAJARAN QUANTUM TEACHING TERHADAP HASIL BELAJAR SISWA KELAS VII SMP KATOLIK SINT ALOYSIUS NIKI-NIKI KABUPATEN TIMOR TENGAH SELATAN 2021-01-18T16:28:46+00:00 Hildegardis Missa Anselmus Boy Baunsele <p>This study aims to determine the effect of the Quantum Teaching model on the learning outcomes of seventh grade students of Sint Aloysius Niki-Niki Catholic Middle School. This type of research is quantitative research with a quasi-experimental method and the research design used is the Nonrandomized Control group Pretest-Posttest Design. The population in this study were all seventh grade students of Sint Aloysius Niki-Niki Catholic Middle School. The data analysis technique used descriptive analysis and inferential analysis. The results showed that the post test score in the experimental class that applied the Quantum Teaching model was higher, namely 86.37 compared to the control class who applied the conventional learning model, namely 69.13. Anacova test results show the calculated F value is 0,000 or less than 0.05. This shows that H0 which states that there is no effect of the Quantum Teaching model on the learning outcomes of seventh grade students of Sint Aloysius Niki-Niki Catholic Middle School is rejected and the consequence is that Ha states that there is an effect of the Quantum Teaching model on the learning outcomes of seventh grade students of SMP Catholic Sint Aloysius Niki Niki accepted. The results of the activities of students who took part in the experimental class were also higher at 90%. compared to the control class, namely 86.65%. And the teacher's ability to manage learning in the experimental class is included in the good category, namely 98.91%.</p> 2021-01-10T00:00:00+00:00 Copyright (c) 2021 Hildegardis Missa PEMANFAATAN LABORATORIUM IPA DI SMA NEGERI 1 LAHUSA 2021-01-18T16:28:46+00:00 Darmawan Harefa Efrata Ge’e Kalvintinus Ndruru Mastawati Ndruru Lies Dian Marsa Ndraha Tatema Telaumbanua Murnihati Sarumaha Fatolosa Hulu <p><em>The laboratory is very closely related to practicum activities in learning science. The aim of this service to find out whether the science laboratory i utilized properly by teachers and students in learning science (physics, biology and chemistry) related to the laboratory. This type of research is quantitative descriptive research. Research results (1) The state of the Natural Sciences laboratory is in good category with a percentage value of 63.45%, (2) The Natural Sciences laboratory equipment has not met the standards set forth in Permediknas of the Republic of Indonesia number 14 of 2007 with a percentage value of 54.87%, (3) Frequency and the utilization of laboratory science not good enough with percentage value of 58.42%. It can be concluded that science laboratories are not utilized well by teachers and students due to inadequate equipment and materials.</em></p> 2021-01-10T00:00:00+00:00 Copyright (c) 2021 Darmawan Harefa PERSEPSI MAHASISWA UNIVERSITAS TIMOR PRODI PENDIDIKAN BIOLOGI TERHADAP E- LEARNING PADA KONDISI PANDEMI COVID -19 2021-01-18T16:28:46+00:00 Vinsensia U. R. Sila Kamaludin <p>E-learning is an indirect learning process using electronic devices and the internet which facilitates the teaching and learning process during the COVID-19 pandemic. E-learning could help students to be more active in independent learning with renewable learning references. The purpose of this study was to determine students' perceptions of e-learning during the COVID-19 pandemic. This descriptive study was conducted by using a questionnaire technique for Biology Education students at the Faculty of Educational Sciences, Timor University. The total students involved in this study were 171 students from the first year until the third year who have been selected randomly;&nbsp; Students stated that they knew about using the internet as much as 97.7%, understood e-learning by 89.5% and the ease of operation was 85.5%. The implementation of e-learning with the Edmodo platform shows that it was most widely used, namely 54.7% of students, then Google Classroom with 45.3% of students. This is because students have not known yet about other various types of e-learning platforms available on the Internet and the two platforms were considered light and easy to operate with complete features. Meanwhile, 97.1% of students stated that e-learning was very useful in supporting the teaching and learning process. The main obstacle faced by students in e-learning were the unstable network connection, power outages, the availability of cellphones and data packages. This research could give the knowledge about the level of students’ knowledge about e-learning, various platforms and the obstacles faced during the implementation of e-learning.</p> 2021-01-10T00:00:00+00:00 Copyright (c) 2021 Kamaluddin PEMBUATAN MIE KERING DENGAN FORTIFIKASI EKSTRAK BUAH KARAMUNTING (Rhodomyrtus tomentosa, (Aiton) Hassk.) 2021-01-18T16:28:46+00:00 Riani Sari Sembiring Dini Novita Sari <p>This study aims to determine the physical, chemical, sensory characteristics of dry noodles and to test the antioxidant activity using the DPPH method. This research method used a randomized block design (RBD) using one factor, namely the addition of Caramunting Fruit Extract (Rhodomyrtus Tomentosa) W. Ait. Hassk (0 ml, 25ml, 50ml, 75ml and 100ml). The treatment in the study had a significant effect on chemical analysis (moisture, ash, protein, and carbohydrate content), physical analysis (Rehydration Power), sensory analysis (color, aroma, taste, and texture) and antioxidant activity tests using the DPPH method, but had no effect. significant on fat content and Water Absorption Measurement. The average water content, ash, protein, fat, and carbohydrates produced were 4.41%, 6.14%, 26.11%, 3.51%, and 59.77%. Measurement of Water Absorption and Rehydration Power, namely 54.03% and 135.15%. The average score of the panelists' preference for taste, texture, aroma and color in Fortified Dry Noodles Caramunting Fruit Extract (Rhodomyrtus Tomentosa) W. Ait. Hassk, namely 3,342%, 3,446%, 3,444% and 3,386%. The results of the test for antioxidant activity of Fortified Dry Noodles Extract of caramunting fruit (Rhodomyrtus tomentosa) W. Ait. Hassk showed the potential for antioxidants with IC50 values ​​of 2652.537 ppm, 1535.224 ppm, 544.8203 ppm, 517.7615 ppm, and 396.8802 ppm, respectively. Antioxidant levels after processing decreased compared to levels of Antioxidants in Karamunting fruit seeds of 99.52 ppm. The use of heat in the processing reduces the antioxidant content of processed products.</p> 2021-01-10T00:00:00+00:00 Copyright (c) 2021 Riani Sari Sembiring SKRINING FITOKIMIA DARI SENYAWA METABOLIT SEKUNDER BUAH JAMBU BIJI MERAH (Psidium guajava L.) 2021-01-18T16:28:47+00:00 Siti Nurlani Harahap Nurbaity Situmorang <p><em>Guava (Psidium guajava L.) is a tropical plant come from southern Mexico and Central America. Red guava fruit has many benefits, one of them is to control fruit fly pests on plants. In red guava fruit is presumed to contain secondary metabolite compounds can be used as natural attractants for fruit fly pests.</em> <em>This study aims to determine the content of secondary metabolite compounds found in red guava (Psidium guajava L.).</em> <em>This research used the qualitative experimental methods.</em> <em>The research started with processing red guava fruit samples into the powder of simpilisa.</em> <em>The powder of simplicia was then macerated with methanol as a solvent at a ratio of 1: 3 for <u>+</u> 5 days.</em> <em>The maceration result was extracted again by rotary evaporator to obtain the concentrated extract.</em> <em>The concentrated extract was screened for phytochemicals to determine the metabolite compounds contained in the sample.</em> <em>The results showed that the secondary metabolites in red guava fruit (Psidium guajava L</em><em>.</em><em>) were positive for flavonoids, alkaloids, tannins / phenolics, terpenoids / steroids.</em> <em>whereas the saponin test showed negative results.</em> <em>We can concluded</em> <em>that guava fruit extract (Psidium guajava </em><em>L.</em><em>) contains flavanoids, alkaloids, terpenoids / steroids and tannins / phenolic.</em></p> 2021-01-10T00:00:00+00:00 Copyright (c) 2021 Siti Nurlani Harahap PENENTUAN INDEKS dan KOEFISIEN LAJU GERMINASI KEDELAI (Glycine max (L.) Merr) yang DIBERI PENGASAPAN (Liquid Smoke) dari SUMBER MATERIAL TUMBUHAN yang BERBEDA 2021-01-21T04:28:20+00:00 Wahyu Dani Swari Basry Yadi Tang Stormy Vertygo <p>The research aimed at determining the Germination Rate Index (ILG) and Coefficient Velocity of Germination (KLG) of Soybean treated with liquid smoke derived from different plant materials. The seeds were soaked with liquid smoke from 3 different plant sources: Kesambi wood, coconut shell, and rice husk with each source were then divided into six variety of concentration: 0%, 10%, 20%, 30%, 40% and 100%. Analysis was conducted by calculating the GRI and CVG based on the parameters observed which were : Germination Time (GT) and Mean Germination Time (MGT). Results showed that liquid smoke derived from Kesambi wood gave the best result in promoting Soybean germination. Based on its ILG and KLG value . Results showed that liquid smoke derived from Kesambi wood gave the best result in promoting Soybean germination. Based on its ILG and KLG value, Kesambi wood-derived liquid smoke with 10% concentration gave the best value which were 50,00 and 2,00 respectively. On the other hand, liquid smoke derived from coconut shell and rice husk inhibited Soybean germination starting from 10% concentration. It is suggested to use liquid smoke derived from Kesambi wood to promote seed germination with lower concentration.</p> 2021-01-10T00:00:00+00:00 Copyright (c) 2021 Wahyu Dani Swari PENGARUH MODEL PEMBELAJARAN PROBLEM BASED LEARNING TERHADAP KEMAMPUAN PEMECAHAN MASALAH MATEMATIS 2021-01-21T05:00:09+00:00 Muhammad Rizky Mazaly Doni Irawan Saragih Lavenia Ulandari <p>The objectives of this study were as follows firstly, to identify whether there was an improvement of students' mathematical problem solving ability treated with problem -&nbsp; based learning, rather than those who obtained ordinary learning; and secondly, to recognize the process of students' answers in each learning.&nbsp; This research was a quasi-experimental research.&nbsp; The population in this study consisted of all students in class VIII at SMP Budi Agung Medan totaling 345 students, by a sample of two classes totaling 60 students.&nbsp; Data analysis was performed with the Manova Statistical Test.&nbsp; The results of this study showed that the improvement of students' mathematical problem solving abilities treated with problem basedearning was better than that of those obtaining regular learning, and the process of students' answer treated with problem based earning was more complete than that of the students' with ordinary learning.</p> 2021-01-10T00:00:00+00:00 Copyright (c) 2021 Muhammad Rizky Mazaly ASOSIASI KECEMASAN MATEMATIS DENGAN KEBIASAAN BERPIKIR SISWA SMA 2021-01-18T16:28:47+00:00 Adam Supriatna Rafiq Zulkarnaen Dani Firmansyah <p>Students’ who have low mathematical anxiety cause themselves more confidence in learning mathematics and solving given problems, while mathematical habit of mind is a key aspect of student success in learning mathematics. This study aims at investigating the association of mathematical anxiety and habit of mind of high school students’. This study is survey research and it was conducted in a public senior high school in Karawang, West Java, Indonesia. The sample of this research consists of the 11th grade were 501 students’ taken using the cluster sampling method. The instrument used in this research covers mathematical anxiety and habit of mind questionnaire, and the data were analysed by using confirmatory factor analysis. The results show that students' mathematical anxiety was negatively associated with&nbsp; habits of mind. However, the result of the research indicates that dominant aspects of mathematical anxiety are: negative perceptions of mathematics learning, low mathematical achievement, lack of confidence, and mathematics tests. Meanwhile, the dominant aspect of habits of mind are: persevering, thinking metacognition, and working carefully and precisely.</p> 2021-01-10T00:00:00+00:00 Copyright (c) 2021 Adam Supriatna, Rafiq Zulkarnaen, Dani Firmansyah PENENTUAN RUMUS BILANGAN REPRODUKSI DASAR PADA MODEL MATEMATIKA COVID-19 DARI MODEL SIR YANG DIMODIFIKASI 2021-01-18T16:28:47+00:00 Anna Angela Sitinjak <p><strong>&nbsp;</strong></p> <p>The spread of COVID-19 has occurred and is unsettling many countries, not only the number of patients is increasing but also the economy is disrupted. Mathematical models can be used to assist in making decisions by describing both exposed and infected conditions. From the mathematical model, especially infectious diseases, the basic reproduction number can be seen. Therefore, this study aims to find the basic reproduction number of the mathematical model COVID-19 modified with various approaches using parameters close to daily life. The basic reproduction number, R<sub>0</sub>, will be free from disease if&nbsp;&nbsp;&nbsp;&nbsp; R<sub>0</sub> &lt;1 and endemic if R<sub>0</sub>&gt; 1. The method used is modifying the Mathematical Model SIR&nbsp; to become the Mathematical Model COVID-19 by considering the isolation that is currently done to reduce the spread of COVID-19, then looking for the disease-free equilibrium point and analyzed its stability by determining the eigenvalues ​​of the Jacobian matrix. From the eigenvalues, the study result is obtained, namely Basic Reproduction Number, .</p> 2021-01-10T00:00:00+00:00 Copyright (c) 2021 Anna Angela Sitinjak PENINGKATAN COLLABORATION SKILLS DALAM KEGIATAN PRAKTIKUM FISIKA DASAR MAHASISWA PROGRAM STUDI TEKNOLOGI PANGAN UNU PURWOKERTO 2021-01-18T16:28:47+00:00 Asti Dewi Nurhayati Laksmi Putri Ayuningtyas Hikmah Yuliasari <p>The purpose of this research was to observe the student’s collaboration of food technology department in 2019 through basic physics practicum. The research method used classroom action research which was divided into four parts, that is planning, action, observation, and reflection. This research was done into four groups and accompanied by each observer. They had to take responsibility to observe the collaboration skill of each student in the group. The results of this research showed that the collaboration skill increased in every part. Group one of the first part showed a result of 45% with moderate success criteria, it increased in the second part to 51.11% (moderate), it increased in the third part to 76.67% (high), and it increased in the fourth part to 92.78% with very high success criteria. So it happened in group two, group three, and group four. Group two of the first part showed a result of 42.22% (moderate), in the second part to 51.117% (moderate), in the third part to 71.67% (high) and in the fourth part to 90% (very high). Group three of the first part showed a result of 46% (moderate), in the second part to 52.67 (moderate), in the third part to 79.33% (high), and in the fourth part to 92.67% (very high). Group four of the first part showed a result of 39.33% (low), in the second part to 56% (moderate), in the third part to 82.67% (very high), in the fourth to 92% (very high).</p> 2021-01-10T00:00:00+00:00 Copyright (c) 2021 Asti Asti POTENSI BIOAKARISIDA EKSTRAK DAUN MIMBA (Azadirachta Indica) DAN BUNGA CENGKEH (Syzygium Aromaticum) TERHADAP TUNGAU PENYEBAB PENYAKIT KREPES PADA JAMUR KUPING 2021-01-18T16:28:47+00:00 Meilani Apra Aniek Prasetyaningsih Kukuh Madyaningrana <p>Wood ear mushrooms&nbsp; is commonly known as one of the cultivated edible mushrooms in Indonesia. The demand for this commodity is still steadily high and leads mushroom farmers to optimize its cultivation. For mushroom farmers in Yogyakarta, the prevalence of krepes disease which is caused by a group of species belongs to Acarina order is still high and leads to total loss of harvest. In order to diminish these Acarina species, the use of chemical acaricides is common because of their effectiveness in eradicating the pests despite their toxic effect to the environment. A strategy to provide environmental friendly acaricides which are &nbsp;extracted from plants is therefore important. This research aimed to study the potency of neem leaves (Azadirachta indica) and clove flowers (Eugenia caryophyllata) extracts as bioacarisides for Acarina species as the causal agent of krepes disease. Neem leaves and cloves flowers were extracted using maceration and soxhlet extraction&nbsp; methods, using 96% methanol as their solvents. Obtained crude extracts would then be subjected to phytochemical analysis using qualitative biochemical tests and GC-MS. The effectivity of extracts as bioacaricides were tested both in in vitro and field scale. In vitro tests showed that neem leaves extract and clove flower extract had LC50 value ​​of 0.22% and 0.48% respectively. Field scale test on mushroom baglogs showed that the efficacy of the neem leaves and clove flower to eradicate acarina were above 50%. Taken together, neem leaves and clove flower extracts are potential to be used as bioacaricides in mushroom farming.</p> 2021-01-10T00:00:00+00:00 Copyright (c) 2021 Meilani Apra JARAK GENETIK DAN KEKERABATAN TIGA JENIS BADAK DI DUNIA BERDASARKAN ANALISIS MtDNA 2021-01-18T16:28:47+00:00 Handayani Dedi Duryadi Hadi Alikodra3 <p>The family Rhinocerotidae is distinct and well defined, but systematic relationships among the four genera evaluated on the basis of geographical distribution of the different genera. &nbsp;The purpose of the research is to find out the genetic distance of rhinos in the world. Samples of Sumatran rhinoceros (Indonesia) are from SRS (Sumatran Rhino Sanctuary) Way Kambas National Park, while for Indian rhinoceros and white African rhinos. Amplification of cytochrome oxidase 1 (CO1) genes in mitochondrial DNA ( mtDNA) uses a specific primer for COI. The two primary pairs are Primer to amplify the partial CO1 sequence (RHCO1F &amp; RHCO1R). CO1 amplification process&nbsp; PCR conditions used are: predenaturation at 94<sup>0</sup>C, followed by the main cycle&nbsp; denaturation stage at 94<sup>0</sup>C for 45 seconds, primary annealing stage (annealing) at 58<sup>0</sup>C. analyzed provides genetic distance ranging from (0.016) to (0.147) for each species.&nbsp; Analysis of 711 bp of rhino DNA sequences can be shown in the form of a matrix of genetic differences. The genetic distance of the white African rhinoceros (Ceratorium simum) with the Sumatran torgamba rhinoceros is (0.142), while with the Indian rhinoceros (0.147) and the genetic distance between the Sumatran rhinos themselves there is a difference that the Sumatran rhino Bina differs by (0.136-0.147) with the other three individuals, while Torgamba has a genetic distance with Rosa of (0.014) but with a very close genetic distance (0.007), and Andalas (0.017), while the genetic distance is close to Bina (0.014) with Rosa (0.014).</p> <p><em>&nbsp;</em></p> 2021-01-10T00:00:00+00:00 Copyright (c) 2021 Handayani PISANG BATU Musa Balbisana COLLA : KAJIAN BOTANI DAN PEMANFAATANNYA 2021-01-21T05:08:07+00:00 Hastuti Hastuti <p>Indonesia is the center of the world's banana biodiversity, which is estimated to have 325 cultivated banana varieties and 12 wild banana species. One of the wild bananas that is still easy to find but has not been optimally utilized is the type of stones banana (<em>Musa balbisiana</em>). Apart from its leaves which are widely used as a wrapper for various kinds of traditional food, the heart of stone bananas is also widely used as a mixture of several types of traditional foods such as lawar. Stone bananas are also known to be used as traditional medicine in several areas. In addition, several research results reveal several pharmacological potentials of stone bananas such as anti-microbial, anti-malarial and antioxidant properties. The data used in this article were obtained through online and offline literature studies. The data obtained were then analyzed, synthesized then compiled and summarized to obtain information about the content and utilization of stone bananas. The purpose of this article is to gather information on the use of stone bananas in traditional medicine and some research that reveals its potential. This article is expected to provide information for the development of the potency of stone bananas both in traditional medicine and in modern medicine.</p> 2021-01-10T00:00:00+00:00 Copyright (c) 2021 Hastuti Hastuti PENGGUNAAN METODE SIMPELKS DALAM MENGOPTIMALKAN PENDAPATAN PADA PENJUALAN MAKANAN DI RUMAH MAKAN DINDA BATUNIRWALA KECAMATAN TELUK MUTIARA 2021-01-18T16:28:48+00:00 Damaris Lalang Siti N. Aini Sya'ban Dewi S. Penpada <p>This research aims to optimize revenue on food sales at Dinda's restaurant and the use of available raw materials to generate optimal profits, so to determine the right combination to maximize profits, Linear Proggaming with the simplex method can be used. The results obtained by using the simplex method, namely the restaurant grinding Dinda should produce 17 portions of Chicken rice (X<sub>1</sub>), 44 portions of Fish rice (X<sub>2</sub>), 10 portions of Soto rice (X<sub>3</sub>). From the number of portions of food produced by Dinda's restaurant, she gets a daily profit of Rp. 1,250,000.</p> 2021-01-10T00:00:00+00:00 Copyright (c) 2021 Damaris Lalang