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All Journal JBIO: jurnal biosains (the journal of biosciences) Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) JURNAL PENGABDIAN KEPADA MASYARAKAT Jurnal Pendidikan Kimia (JPKim) Pendas : Jurnah Ilmiah Pendidikan Dasar JCRS (Journal of Community Research and Service) Jurnal Pembelajaran dan Biologi Nukleus Jurnal Inovasi Pendidikan dan Sains Indonesian Journal of Chemical Science and Technology Nautical: Jurnal Ilmiah Multidisiplin Indonesia Jurnal Pendidikan, Sains dan Teknologi Jurnal Pengabdian Masyarakat Indonesia (JPMI) Marga: Journal Of Innovation and Creatifity
Rudi Munzirwan Siregar, Rudi Munzirwan
Departement Of Chemistry, Faculty Of Mathematics And Natural Sciences, Universitas Negeri Medan, Jl. Willem Iskandar Pasar V Medan Estate, Medan 20221, Indonesia
Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Education Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Physics Social Sciences Other

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Application of the Contextual Teaching and Learning Model Using Animated Power Point Media on Student Motivation and Learning Outcomes in Class XI High School Reaction Rate Material Putri Jasrina; Rudi Munzirwan Siregar
Marga: Journal Of Innovation and Creatifity Vol 1 No 1 (2024): Marga: Journal of Innovation and Creativity
Publisher : Sekolah Tinggi Olahraga dan Kesehatan Bina Guna

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Abstract

This research aims to test whether there is a difference in the learning outcomes of students who use the Contextual Teaching And Learning Model with the Doratoon Animation Powerpoint with the learning outcomes of students who use the Contextual Teaching And Learning Model with the Powtoon Animation Powerpoint on the Reaction Rate learning material, and to assess whether learning motivation students who use the Contextual Teaching And Learning Model with Doratoon Animation power points compared to the learning motivation of students who use the Contextual Teaching And Learning Model with Powtoon Animation power points on Reaction Rate learning materials and aims to find out whether there is interaction between models and media on students' final motivation in determining student learning outcomes in reaction rate learning material in class XI Science at SMA Negeri 1 Binjai - Langkat. The samples used were two classes selected by random sampling and classes XI IPA 1 and XI IPA 3 were selected. Hypothesis testing was carried out in two ways, namely the paired t test and the one way anova test. In the hypothesis test, the value of learning outcomes obtained a sig value of 0.001 < α= 0.05 so that H0 was rejected and Ha was accepted, so it was proven that learning outcomes were higher in classes that used the contextual teaching and learning model with Doratoon animated power point media. In terms of motivation, a significance value of 0.049 is produced, which is smaller than α= 0.05, so Ha is accepted and H0 is rejected, which shows that learning motivation is higher in classes taught using the contextual teaching and learning model with Doratoon animated power point media. In the interaction test, a sig.nificance value of 0.004 was obtained, which indicates a value < of α= 0.05 so that Ha is accepted and H0 is rejected, so there is an interaction between the model and the media on students' final motivation in the reaction rate material.
PERBANDINGAN ASAM ASETAT DENGAN ASAM FORMIAT SEBAGAI BAHAN PENGGUMPAL LATEKS Rudi Munzirwan Siregar; Putri Anggita Widodo
Jurnal Inovasi Pendidikan dan Sains Vol 2 No 3 (2021): December
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Nahdlatul Wathan Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51673/jips.v2i3.774

Abstract

Indonesia is one of the largest rubber producers. Almost all garden latex for rubber production must be coagulated before further processing. Research has been carried out on the comparison of acetic acid with formic acid as a latex coagulation agent. This study aims to compare acetic acid with formic acid as a latex coagulation agent. Coconut shell charcoal (particle size 80 mesh) was added to the latex with a weight of 42 grams then the latex was coagulated with acetic acid and formic acid with a pH of 4.7. As a rubber quality research was carried out by measuring the initial plasticity, plasticity retention index and mooney viscosity of rubber. In conclusion, latex coagulated with acetic acid produced better rubber than latex coagulated with formic acid.
Pengabdian Kepada Masyarakat (PKM) dalam Pengolahan Air  Bersih  Untuk  Keperluan RumahTangga  di Desa Sukajadi, Kec. Perbaungan, Kab. Serdang Bedagai Rudi Munzirwan Siregar; Sabani
Jurnal Pengabdian Masyarakat Indonesia (JPMI) Vol. 1 No. 2 (2023): Desember
Publisher : Publikasi Inspirasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62017/jpmi.v1i2.293

Abstract

Air bersih sangat dibutuhkan masyarakat terutama warga di Desa Wonosari. Warga terus menggunakan air yang tidak sehat untuk kebutuhan rumah tangga karena keterbatasan pengetahuan, sarana, prasarana dan ekonomi,. Oleh karena itu, masyarakat sangat perlu diberi pengetahuan dan keterampilan pengolahan air bersih. Kegiatan pengabdian kepada masyarakat (PKM) dalam mengolah Air Bersih di Desa wonosari bertujuan untuk: 1) memberikan keterampilan dalam proses mengolah air bersih, 2). meningkatkan pengetahuan tentang air bersih. Tujuan tersebut dicapai dengan kegiatan pelatihan, dan penerapan teknologi tepat guna untuk mengolah air bersih. Hasil yang dicapai adalah: 1) mitra telah memiliki ketrampilan dalam mengolahan air bersih untuk rumah tangga 2) .meningkatnya pengetahuan mitra tentang pentinganya air bersih bagi Kesehatan
PENGARUH MODEL DISCOVERY LEARNING TERHADAP KEMAMPUAN GENERIK SAINS SISWA KELAS XI MAN ASAHAN PADA MATERI TERMOKIMIA Talitha Azmi Siregar; Rudi Munzirwan Siregar
Pendas : Jurnal Ilmiah Pendidikan Dasar Vol. 11 No. 02 (2026): Volume 11 No. 2, Juni 2026 Release
Publisher : Program Studi Pendidikan Guru Sekolah Dasar FKIP Universitas Pasundan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23969/jp.v11i02.48201

Abstract

The purpose of this study is to investigate how using the Discovery Learning paradigm affects the general science abilities of eleventh-grade students studying thermochemistry at MAN Asahan. 34 students make up the sample size for this one-group pretest–posttest research design. Multiple-choice questions based on six measures of general science skills and observation sheets were used to collect data. Expertise have confirmed the research equipment, and the KR-20 dependability test yielded a very high criteria. Because the data did not have a normal distribution, N-Gain and the Wilcoxon test were used for data analysis. The average student score increased from 63.62 on the pretest to 85.29 on the posttest, according to the research findings, with an N-Gain value of 0.54 (medium criteria). The concept-building indicator was the most improved of all the generic science skill indicators. It is clear from the Wilcoxon test results that there is a significant difference (p < 0.05) between the pretest and posttest that the Discovery Learning model significantly affects students' general science skills and is highly successful in improving comprehension and scientific thinking abilities.
Co-Authors Ahmad Nasir Pulungan Arista, Nurul Artika, Refi Dewi Syafriani Muhammad Yusuf Muhammad Yusuf Pedro Shane M Simbolon Putri anggita widodo Putri Anggita Widodo Putri Jasrina Rabiah Afifah Daulay Ratna Sari Dewi Rizal Mukra Sabani Sabani Talitha Azmi Siregar Widya Andayani WIDYA ANDAYANI