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All Journal TABULARASA JURNAL PENELITIAN SAINTIKA JURNAL PENGABDIAN KEPADA MASYARAKAT PROSIDING SEMINAR KIMIA AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian JCRS (Journal of Community Research and Service) Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Eduproxima : Jurnal Ilmiah Pendidikan IPA Indonesian Journal of Chemical Science and Technology Indian Journal of Forensic Medicine & Toxicology Jurnal Pengabdian Kepada Masyarakat (JPKM) Tabikpun Jurnal Teknologi Pendidikan : Jurnal Penelitian dan Pengembangan Pembelajaran Journal of Science and Science Education (JoSSEd) Indonesian Journal of Advanced Research (IJAR) Madani: Multidisciplinary Scientific Journal Algebra
Ida Duma Riris
Universitas Negeri Medan
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience Physics Public Health Social Sciences Other

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Analysis Of Student Misconceptions Using A Web-Based Diagnostic Test On Redox Material Silaban, Lamtiur Paronauli; Riris, Ida Duma; Muchtar, Zainnudin; Ginting, Elfrinda; Nasution, Haqqi Annazili
Jurnal Teknologi Pendidikan : Jurnal Penelitian dan Pengembangan Pembelajaran Vol 9, No 2 (2024): April
Publisher : UNDIKMA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/jtp.v9i2.11102

Abstract

This study aims to determine the presence of student misconceptions in redox material, misconceptions in each concept of redox material, and factors causing student misconceptions in redox material in class XII MIA SMA N 2 Percut Sei Tuan. This research is a quantitative descriptive research. The sampling technique in this study used purposive sampling technique. The samples in this study were 32 students of class XII MIA 1 who were selected based on the recommendation of the chemistry teacher. Data collection techniques were carried out using a web-based three-tier diagnostic test, misconception questionnaire, and in-depth interviews (teachers and students). The results showed that the misconceptions identified using the web-based three tier diagnostic test on the redox concept as a whole was 31.718%, while students who experience incomprehension of the concept is 54.687%, students who understand the concept is 13.906% and understand the concept is not sure 1.25%. Students' misconceptions on each concept of redox material are highest on the concept of compound names at 43.8% and the lowest on the concept of equalizing redox reactions with the oxidation number method and the ½ reaction/ion electron method at 26.6%.Based on the results of questionnaires and interviews, each factor has an influence on misconceptions, the biggest misconceptions are teacher factors and teaching methods, namely 21.32% and 21.28%.
Toxicity Test, Antibacterial and Antioxidant Activity of Simargaolgaol Plant Stem Extract (Aglaonema modestum Schott ex Engl) Salsabila, Fuaddinda Putri; Riris, Ida Duma; Sihombing, Junifa Layla; H, Herlinawati; Roza, Destria
Madani: Jurnal Ilmiah Multidisiplin Vol 2, No 3 (2024): Madani, Vol. 2, No. 3 2024
Publisher : Penerbit Yayasan Daarul Huda Kruengmane

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.11067465

Abstract

The simargaolgaol plant (Aglaonema modestum Schott ex Engl) is one of the plants that grow wild in the Barus forest area of Central Tapanuli, North Sumatra which is used by local people as a traditional medicinal plant. This study aims to determine the toxicity properties by BSLT method, antibacterial activity by disc diffusion method and antioxidant activity by DPPH method. Toxicity test results of simargaolgaol stem extract (Aglaonema modestum Schott ex Engl) against Artemia salina Leach larvae showed that n-hexane extract has toxic properties with an LC50 value of 24.424 ppm (toxic category), ethyl acetate extract with an LC50 value of 40,693 ppm (toxic category) and ethanol extract with an LC50 value of 25,830 ppm (toxic category). The results of antibacterial activity showed that ethyl acetate extract (semipolar) with a concentration of 10% had the greatest antibacterial potential against Escherichia coli bacteria with an inhibition zone of about 14.3 mm (strong category). The results of antioxidant activity of ethanol extract of simargaolgaol stems have an IC50 value of 28.075 ppm and Vitamin C has an IC50 value of 36.867 ppm. Thus, based on the results of the IC50 value, it can be seen that the ethanol extract of simargaolgaol stems has strong antioxidant activity compared to Vitamin C as a comparison.
Effect of Simargaol - Gaol (Aglaonema Modestum Schott Ex Engl) Leaf Extract on Serum HDL, LDL and Triglyceride Levels of Rats Fed High-Fat Feed Gulo, Kristin Wulan Liberti Vivanis; Riris, Ida Duma; Roza, Destria; Nainggolan, Bajoka; Juniar, Anna
Indonesian Journal of Advanced Research Vol. 3 No. 5 (2024): May 2024
Publisher : PT FORMOSA CENDEKIA GLOBAL

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55927/ijar.v3i5.8970

Abstract

Cholesterol in the body is divided into three parts, namely Low Density Lipoprotein (LDL) High Density Lipoprotein (HDL) and Triglycerides. Excessive cholesterol in the blood can cause hypercholesterolemia. The Simargaolgaol plant (Aglaonema modestum Schott ex Engl) is one of the plants that people use as traditional medicine to cure various types of diseases. This study aims to analyze the effect of administering simargaolgaol leaf extract on reducing cholesterol levels in male Wistar rats fed a high-fat diet. This study used a Completely Randomized Design (CRD) consisting of 6 groups, namely K0+ (Normal Group), K0- (Negative Control), K+ (Positive Control given simvastatin), varying doses 100 mg/KgBW, 200 mg/KgBW, 300mg/KgBW. The data obtained was analyzed using One way Anova statistical analysis with SPSS for Windows software. The data that has been analyzed has a significant value of p<0.05, which means that administration of ethanol extract of simargaolgaol leaves (Aglaonema modestum Schott ex Engl) shows an effect on reducing cholesterol in the blood. The conclusion of this research is that the ethanol extract of simargaolgaol (Aglaonema modestum Schott ex Engl) leaves has anti-cholesterol activity at a minimum dose of 300 mg/KgBW.
Efektivitas Minyak Atsiri dan Ekstrak N-Heksana Daun Beluntas sebagai Insektisida Alami dengan Bioindikator Ulat Hongkong: Efektivitas Minyak Atsiri dan Ekstrak N-Heksana Daun Beluntas sebagai Insektisida Alami dengan Bioindikator Ulat Hongkong Juwita , Tita; Agustin, Nadia; Riris, Ida Duma; Eddiyanto; Hendrawan
AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian Vol 9 No 1 (2025): AGROSAINSTEK: Jurnal Ilmu dan Teknologi Pertanian
Publisher : Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/agrosainstek.v9i1.785

Abstract

Natural insecticides are pest control materials derived from natural sources such as plants. The use of natural insecticides is very important because it has a lower cost, is safe for living things and does not pollute the environment, so this study aims to determine the activity of essential oils and n-hexane extracts of beluntas leaves (Pluchea indica L.) as natural insecticides with bioindicators of Hong Kong caterpillars (Tenebrio molitor). Isolation of essential oils was carried out using the steam distillation method and extraction using the maceration method. Insecticide activity tests used the contact poison method and the residue method, with variations in extract and essential oil concentrations of 1%, 3%, 5%, 7%, 10%, 20%, 30% (v/v) and positive controls, namely Hippo insecticide and negative control tween 80. The results of the isolation of essential oils from beluntas leaves produced a yield of 2%, while extraction using the maceration method produced a yield of 1.84%. The results of the insecticide activity test using the contact poison method were more effective than the residue method. The insecticidal activity and n-hexane extract are more effective than essential oils, this is due to the differences in the content of secondary metabolite compounds contained in the extract and essential oil.
The Effect of Project Based Learning Model (PjBL) Assisted by KOKAMI Media on Motivation and Learning Outcomes on Chemical Equilibrium Material Tampubolon, Cindy Claudin; Riris, Ida Duma; Nainggolan, Bajoka; Syafriani, Dewi; Ginting, Elfrida
Journal of Science and Science Education Vol. 6 No. 1 (2025): April
Publisher : Pascasarjana, Mataram University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jossed.v6i1.11031

Abstract

This study aims to determine the learning of the Project Based Learning (PjBL) Model assisted by KOKAMI media (Kotak dan Kartu Misteri) on learning outcomes, learning motivation, and the significance between learning outcomes and motivation in chemical equilibrium materials at SMA Negeri 17 Medan. The sample population of all students in grade XI and as a random sample was taken from two classes, namely class XI B as an experimental class and XI C as a control class. The initial learning was carried out in the same pre-test, then learning was carried out for the control class (using the conventional model without KOKAMI media) while the experimental class (using the PjBL model with the help of KOKAMI media). The results data were analyzed using normality, homogeneity, and linearity tests. The hypothesis was tested by simple linear regression, independent t-test, and correlation test. The average pre-test score of the experimental class was 34,00  8,17 the control class was 33,14  6,57 post-test (89.71  3.60 ; 79.57 6.36), with a higher N-Gain value (0.84  0.065 ; 0.69  0.016 ). The results of the simple linear regression test showed a significance value of 0.000 ≤ (α = 0.005) with an average learning motivation of 87.25 (high category), so that Ha was accepted. The t-test shows the value of sig. 0.000 ≤ (α = 0.005), and the third hypothesis test showed sig. 0.001 ≤ (α = 0.005), indicating a significant relationship between learning outcomes and learning motivation
Influence of Ethnopedagogical Materials and Problem Based Learning on Students Learning Interest and Critical Thinking Ramlan Silaban; Grace Octavia Hutasoit; Tita Linyan Pardede; Ida Duma Riris; Marham Sitorus; Rabiah Afifah Daulay; Rafida Almira Samosir; Irving Josafat Alexander
Jurnal Inovasi Pembelajaran Kimia (Journal of Innovation in Chemistry Education) Vol. 7 No. 1 (2025): APRIL 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jipk.v7i1.67607

Abstract

The cultural wealth of Indonesia has great potential in chemistry education, but it has not been optimally utilized. Materials such as reaction rates can be contextualized through traditional processes, such as the fermentation of tuak. The lack of relevant teaching materials impacts students' low interest and critical thinking skills. Therefore, an innovation in the form of ethnopedagogy-based Student Worksheets with a Problem Based Learning model is needed to create meaningful learning. This study uses a quantitative approach with a quasi-experimental method. The instruments used consist of 5 essay questions to measure critical thinking skills and a questionnaire containing 20 statements to measure learning interest. A hypothesis test was conducted using a one-tailed Independent Sample T-Test. The results show that the average learning interest of students in the experiment class is higher compared to the control class, namely 90.25 and 85.625, respectively. Meanwhile, the average posttest score for students' critical thinking ability in the experimental class reached 92.25 higher than the control class, which scored 83.5. This shows that the use of Student Worksheet based on ethnopedagogy and Problem Based Learning has an influence on students' learning interest and critical thinking.
THE INFLUENCE PROJECT BASED LEARNING MODEL ASSISTED BY ANIMATED VIDEO ON INCREASING MOTIVATION AND LEARNING OUTCOMES FOR CLASS XI HIGH SCHOOL CHEMISTRY ON COLLOID MATERIALS Sibarani, Nancy Agalalis; Riris, Ida Duma
EDUPROXIMA : Jurnal Ilmiah Pendidikan IPA Vol 7, No 3 (2025)
Publisher : Universitas Bhinneka PGRI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29100/.v7i3.6789

Abstract

This study aims to determine the effect of using the Project Based Learning model on student learning motivation, increasing student learning outcomes on colloidal material, knowing the correlation between motivation and student learning outcomes and knowing the increase in student learning outcomes with the Project Based Learning model assisted by animated media on colloidal material. To achieve these objectives, the Project Based Learning model was used. The research instruments used were tests and non-tests. The results showed that there was an effect of using the project-based learning model assisted by animated media on student motivation in colloidal material with a large tcount of 19.01. There is an effect of using the project-based learning model assisted by aimasi media on improving student learning outcomes with a tcount of 6.59. There is a positive correlation between student motivation and the improvement of learning outcomes taught using the project-based learning model assisted by animated media on colloidal material with a large r count of 0.56 and the effect of motivation on student learning outcomes of 31.3%. There is an increase in student learning outcomes with the Project Based Learning model assisted by animated media on colloidal material with an average increase from 32.96 to 82.96 and obtained a gain value of 0.743 or 74.3% with a high category.
PENERAPAN TEKNOLOGI MESIN PENCAMPUR PAKAN TERNAK RUMINANSIA UNTUK MENINGKATKAN KUALITAS SUSU KAMBING PERAH DALAM UPAYA PENCEGAHAN STUNTING DI DESA PASAR BARU KECAMATAN TELUK MENGKUDU KABUPATEN SERDANG BERDAGAI Damanik, Marini; Koto, Indra; Pratiwi, Alfira Julian; Sari, Sri Adelila; Ridho, Dimas; Riris, Ida Duma; Dewi, Ratna Sari; Kurniawan, Ekin Dwi Arif
JURNAL PENGABDIAN KEPADA MASYARAKAT Vol. 31 No. 3 (2025): JULI-SEPTEMBER
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkm.v31i3.67759

Abstract

Peningkatan kualitas pakan ternak ruminansia menjadi salah satu faktor penting dalam mendukung produktivitas susu kambing perah, yang secara tidak langsung berkontribusi dalam dunia kesehatan sebagai upaya pencegahan stunting melalui pemenuhan gizi keluarga. Namun, mitra peternak di Desa Pasar Baru, Kecamatan Teluk Mengkudu, Kabupaten Serdang Bedagai masih menghadapi kendala dalam proses pencampuran pakan secara manual yang memakan waktu lama dan menghasilkan pakan yang tidak homogen. Kegiatan pengabdian ini bertujuan untuk memberikan solusi melalui penerapan teknologi tepat guna berupa mesin pencampur pakan serta pelatihan manajemen usaha. Metode yang digunakan meliputi pendidikan, pelatihan, dan praktik langsung. Hasil kegiatan menunjukkan bahwa mitra mengalami peningkatan efisiensi kerja, dengan waktu pencampuran pakan yang berkurang signifikan, serta peningkatan homogenitas pakan yang berdampak positif terhadap kualitas dan kuantitas susu kambing. Selain itu, pelatihan pengemasan dan pemasaran turut mendukung penguatan aspek kewirausahaan mitra. Kegiatan ini memberikan dampak nyata dan berkelanjutan dalam peningkatan produktivitas ternak serta ekonomi rumah tangga peternak.
Co-Authors ,, Serimawarni Agustin, Nadia Ahmad Nasir Pulungan Albinus Silalahi Anastasya Simbolon, Veronika Anna Juniar Bajoka Nainggolan Damanik, Marini Dewi Syafriani Dewi Syafriani, Dewi Eddiyanto Ginting, Elfrida Ginting, Elfrinda Grace Octavia Hutasoit Gulo, Kristin Wulan Liberti Vivanis H, Herlinawati Haqqi Annazili Nasution Hasibuan, Desy Rahmayanti Hendrawan Indra Koto Irving Josafat Alexander Junifa Layla Sihombing Junifa Layla Sihombing, Junifa Layla Juwita , Tita Kurniawan, Ekin Dwi Arif Marham Sitorus Marham Sitorus Marini Damanik Marini Damanik Mhd Fahmi Muchtar, Zainnudin Mutiara Agustina Nst Nasution, Haqqi Annazili Nasution, Marnida Yusfiani Neva Asih Sary Silalahi Nia Veronika Nova Damanik Nurul Hidayah Nurul Khumaida Pratiwi, Alfira Julian Pratiwi, Meidy Citra Pulungan, Ahmad Shafwan Putri Faradilla Rabiah Afifah Daulay Ramlan Silaban Ratna Sari Dewi Roza, Destria Safruddin, Muhammad Sultan Salsabila, Fuaddinda Putri Samosir, Rafidah Almira Saputra, Ardi Maulanna Sari, Dwy Puspita Saronom S ilaban Sibarani, Nancy Agalalis Silaban, Lamtiur Paronauli Sitorus, Rosa Nadya Evelyn Sri Adelila Sari Sumiati Nainggolan Tampubolon, Cindy Claudin Tita Juwitaningsih Tita Linyan Pardede Zuhairiah Nasution, Zuhairiah