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All Journal Biotika: Jurnal Ilmiah Biologi Alchemy Jurnal Penelitian Kimia Indonesian Journal of Chemistry Jambura Journal of Chemistry Fullerene Journal of Chemistry Oxygenius Journal Of Chemistry Education Jurnal Dedikasi Seminar Nasional Pengabdian Kepada Masyarakat JIPI (Jurnal IPA dan Pembelajaran IPA)
Rymond Jusuf Rumampuk
Universitas Negeri Manado
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Economics, Econometrics & Finance Education Energy Environmental Science Immunology & microbiology Materials Science & Nanotechnology Physics Other

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Penerapan Model Pembelajaran Problem Based Learning (PBL) dengan Pendekatan Etnosains Pada Materi Larutan Penyangga di SMA Negeri 1 Tahuna Dewi Indriyany Manangkoda; Emma Julin Pongoh; Rymond Jusuf Rumampuk
Oxygenius: Journal Of Chemistry Education Vol 5 No 2 (2023): Oxygenius : Journal Of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v5i2.594

Abstract

Penelitian ini merupakan penelitian tindakan kelas yang bertujuan untuk meningkatkan hasil belajar siswa pada materi larutan penyangga melalui penerapan model pembelajaran problem based learning (PBL) dengan pendekatan etnosains. Terdapat beberapa hal yang mendasari penelitian ini adalah rendahnya minat belajar siswa pada mata pelajaran kimia yang kemudian membuat hasil belajar siswa kurang memuaskan. Penelitian yang dilakukan merupakan penelitian tindakan kelas (PTK) yang berlangsung dalam dua siklus, pada siklus I dilaksanakan tiga kali pertemuan dan disiklus II dilaksnakan dua kali pertemuan. Masing-masing siklus pada penelitian ini terdiri dari: tahap perencanaan, pelaksanaan, observasi, dan refleksi. Teknik pengumpulan data dilakukan dengan menggunakan lembar observasi dan tes tertulis. Berdasarkan hasil penelitian yang diperoleh bahwa model pembelajaran PBL dengan pendekatan etnosains dapat meningkatkan hasil belajar siswa. Hal tersebut dapat dilihat dari presentase hasil belajar siswa yang meningkat dari 74% pada siklus I yang selanjutnya meningkat menjadi 96% pada siklus II.
Isolation and Identificationof Octadecane-3-on Compound From Ethyl Acetate Fraction of Momordica balsamina L. Leaves Emma Julien Pongoh*; Rymond Jusuf Rumampuk; Vlagia Indira Paat; Stefan Marco Rumengan; Julieta Soputan
JIPI (Jurnal IPA dan Pembelajaran IPA) Vol 8, No 1 (2024): March 2024
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jipi.v8i1.37717

Abstract

Momordica balsamina L. is a wild plant that generally grows in moist soil and gets a lot of sunlight. The leaves and fruit are reported to have various medicinal and nutritional properties.  This study aimed to isolate and identify the compounds contained in the ethyl acetate fraction in Momordica balsamina L The isolation stage was carried out by the maceration method and the separation and purification of the compounds using gravity column chromatography methods to obtain isolate fraction F1.6.2 with a sample weight of 2.4 mg. Identification of compounds using proton nuclear magnetic resonance (1H-NMR) and carbon nuclear magnetic resonance (13C-NMR) spectroscopy techniques. The proposed identified compound is octadecan-3-one or 3-octadecanone with the molecular formula C18H36O
PENERAPAN PEMBELAJARAN KIMIA BERBASIS CHEMO-ENTREPRENEURSHIP PADA MATERI LARUTAN PENYANGGA KELAS XI SISWA SMA CITRA KASIH MANADO Runtuwene, Christiana Paula; Rumampuk, Rymond; Tengker, Soenandar; Kaeng, Meilanie; Pongoh, Emma
Oxygenius: Journal Of Chemistry Education Vol 7 No 1 (2025): Oxygenius : Journal Of Chemistry Education
Publisher : Chemistry Department, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37033/ojce.v7i1.722

Abstract

This study aims to determine the effect of applying Chemo-Entrepreneurship (CEP)-based chemistry learning on students' engagement and learning outcomes in the buffer solution material for Grade XI students at SMA Citra Kasih Manado. This research employed a Classroom Action Research (CAR) method conducted in two cycles, each consisting of planning, implementation, observation, and reflection stages. The research instruments included student activity observation sheets and learning outcome tests. The results showed that the application of CEP-based learning significantly increased students' engagement and learning outcomes. The average learning activity score increased from 42.5% (categorized as low) in the first cycle to 90% (categorized as very good) in the second cycle. The average learning outcome score also rose from 56 in the first cycle to 89 in the second cycle, achieving a 100% mastery level. The implementation of Chemo-Entrepreneurship through a research-based learning model proved effective in enhancing student engagement, creativity, and understanding of buffer solution concepts. Therefore, this approach is recommended for use in other chemistry learning topics to foster entrepreneurial potential and 21st-century skills among students.
Co-Authors Ade Wiwit Tahulending Anderson Arnold Aloanis Anthony J Herlt Ardi Kapahang Arfiani Rizki Paramata Astin Lukum claudia christy senduk Dewi Indriyany Manangkoda Dian Howan Djefry Tani E. M. Soekartadiredja Emma Julin Pongoh Febby Hauwita Gabriel Reinhard Kahiking Hotma Rotua Br. Simbolon Husein Hernadi Bahti Hutri C. Werfete Istiani Astari Nanangkong Julieta Soputan Justitia Mifthania Bulotio Kaeng, Meilanie Laode Rijai Lewis N Mander Mokosuli Yermia Samuel Ni Wayan Suriani Nonny Manampiring Paat, Vlagia Indira Ponis Tarigan Ponis Tarigan Ponis Tarigan Ponis Tarigan Ratu Safitri Revolson Mege Runtuwene, Christiana Paula Soetijoso Soemitro Soetijoso Soemitro Sofia Satriani Krisen Sofyan M Nur SOFYAN M.NUR, SOFYAN Stefan Marco Rumengan Supriyatna Sutardjo Tengker, Soenandar Millian Tompunu Theresia N. R. Boce Unang Supratman Veyta Tamunu W.C. Taylor Wilson Alexander Raymond Rombang Yue Mao Shen