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All Journal JURNAL KIMIA SAINS DAN APLIKASI Jurnal Entropi Sainstek J-PEK (JURNAL PEMBELAJARAN KIMIA) Jurnal Kartika Kimia Jambura Journal of Food Technology Jambura Journal of Educational Chemistry Jambura Journal of Chemistry Jurnal Ilmiah Kanderang Tingang Acta Chimica Asiana Hydrogen: Jurnal Kependidikan Kimia Damhil: Jurnal Pengabdian kepada Masyarakat Indonesian Journal of Innovation Multidisipliner Research
La Alio
Universitas Negeri Gorontalo
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Engineering Industrial & Manufacturing Engineering Social Sciences Other

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Identifikasi Pemahaman Konsep Siswa Pada Materi Ikatan Kimia Menggunakan Tes Diagnostik Three Tier Multiple Choice Umar, Ahmat Sudir; Lukum, Astin; Dilapanga, Windi; Kilo, Akram La; Aman, La Ode; Alio, La; Sukamto, Kostiawan; Pahrun, Abdul Wahab
Jambura Journal of Educational Chemistry Vol 5, No 1 (2023): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjec.v5i1.18984

Abstract

Penelitian ini bertujuan untuk mengidentifikasi pemahaman konsep siswa pada materi ikatan kimia kelas XI IPA SMA N 1 Telaga Biru. Metode penelitian yang dilakukan adalah kualitatif deskriptif. Instrument yang dilakukan adalah tes diagnostik Three Tier Multiple Choice. Subjek penelitian yang digunakan adalah kelas XI IPA SMA Negeri 1 Telaga Biru dengan jumlah sampel sebanyak 76. Data penelitian diperoleh dari jawaban siswa pada soal tes Three Tier Multiple Choice. Data tersebut diolah berdasarkan pola jawaban siswa yang dikelompokan kedalam tiga kategori yaitu Paham Konsep, Tidak Paham Konsep dan Miskonsepsi. Pada hasil penelitian menunjukan bahwa kategori kemampuan pemahaman konsep memiliki presentase yang paham konsep sebesar 15, Tidak Paham Konsep sebesar 27 dan Miskonsepsi diperoleh presentase sebesar 58. Berdasarkan presentase ditemukan bahwa pengetahuan siswa kelas XI IPA SMA Negeri 1 Telaga Biru termasuk pada kategori Miskonsepsi dengan kriteria tinggi.
Identifikasi Pemahaman Konsep Siswa pada Materi Termokimia Menggunakan Tes Diagnostik Three-Tier Multiple Choice Suleman, Nita; Lukum, Astin; Rauf, Nuramna; Paputungan, Mardjan; Alio, La; Sukamto, Kostiawan
Jambura Journal of Educational Chemistry Vol 5, No 2 (2023): August
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjec.v5i2.13255

Abstract

This research is descriptive qualitative research, which aims to determine students' concept understanding of thermochemistry in class XI SMA Negeri 1 Gorontalo. The instrument used was a Three-tier multiple-choice Diagnosis Test. The research subject used was class XI IPA SMA Negeri 1 Gorontalo, with a sample size of 42 students. The research data was obtained from students' answers to the Three-tier multiple-choice questions. The data was processed based on the pattern of student answers, which were then grouped into the categories of conceptual understanding, misconceptions, and not conceptual understanding. The results showed that students who understood the concept were 46.19%, misconceptions were 43.97%, and did not understand the concept by 9.84%.
Pemanfaatan Kitosan Dari Kulit Udang (Panaeus Monodon) Sebagai Pengawet Ikan Kembung (Rastrelliger Sp) Bintang Maharani; Astin Lukum; Deasy Natalia Botutihe; Yuszda K. Salimi; La Alio; Hamid Majelis
Indonesian Journal of Innovation Multidisipliner Research Vol. 4 No. 2 (2026): April - Juni
Publisher : Institute of Advanced Knowledge and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69693/ijim.v4i2.632

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh variasi konsentrasi kitosan kulit udang (Penaeus monodon) terhadap daya simpan dan kualitas ikan kembung (Rastrelliger sp) selama penyimpanan. Penelitian dilakukan tahapan, yaitu proses pengawetan ikan menggunakan kitosan serta penggunaan garam sebagai pembanding. Selanjutnya dilakukan karakterisasi kualitas ikan melalui beberapa pengujian, meliputi analisis pH, uji organoleptik, Hasil penelitian menunjukkan bahwa pengawetan ikan menggunakan kitosan mampu mempertahankan daya simpan hingga 14 hari. Pada uji pH, konsentrasi kitosan 2% berada pada kisaran 6,00–7,15 dengan hasil organoleptik terbaik dibandingkan konsentrasi 3% dan 4%. Konsentrasi 3% memiliki kisaran pH 6,45–7,32 dengan kualitas organoleptik lebih baik dibandingkan konsentrasi 4%. Sementara itu, konsentrasi 4% memiliki kisaran pH 6,80–7,90 dengan hasil organoleptik paling rendah.
Gelatin–Alginat Koaservat Berstruktur Nano untuk Meningkatkan Stabilitas Minyak Sacha Inchi dalam Sistem Pangan Yuszda K Salimi; Afrilia Ali; La Alio; Astin Lukum; Arviani Arviani
Jambura Journal of Chemistry Vol 8, No 1 (2026): February
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jambchem.v8i1.35601

Abstract

Sacha inchi (Plukenetia volubilis L.) seed oil is rich in polyunsaturated fatty acids, such as alpha-linolenic acid (ω-3) and linoleic acid (ω-6), which are beneficial for health but are susceptible to oxidation. This study aimed to develop a stable and efficient microencapsulation system to protect oil from oxidative degradation using a complex coacervation method with gelatin and sodium alginate as coating materials, and calcium chloride (CaCl2, 2%) as a crosslinking agent. The process was carried out at pH 3.75, with homogenization at 12,000 rpm for 7 minutes, followed by low-temperature drying. Characterization included yield, encapsulation efficiency, moisture content, particle size, and the morphology of the microcapsules. The results showed a yield of 75.00 ± 2.10%, an encapsulation efficiency of 93.85 ± 0.93%, and a moisture content of 11.26 ± 1.37%. Dynamic Light Scattering-based Particle Size Analyzer analysis showed a hydrodynamic diameter of~0.100 µm (PDI 0.321) with good dispersion (88.4% transmittance). In the meantime, Scanning Electron Microscope observations revealed a spherical morphology with a smooth, crack-free surface. The gelatin-sodium alginate combination proved effective as a coating material, yielding microcapsules with high efficiency, good physical stability, and potential applications in functional food products and nutraceutical supplements.
The Effect of STEM-Based Project-Based Learning (PjBL) on Students’ Scientific Thinking Skills in Reaction Rate Yuliana Pariyonga; Weny J.A Musa; Thayban Thayban; Lukman Abdul Rauf Laliyo; La Alio
Jambura Journal of Educational Chemistry Vol 8, No 2 (2026): August
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjec.v8i2.38737

Abstract

Reaction rate is one of the most complex topics in chemistry and remains difficult for students to understand. This condition highlights the need for more effective instructional approaches to enhance students' scientific thinking skills.This study was conducted to analyze the effect of implementing the STEM-based Project-Based Learning (PjBL) model on the scientific thinking skills of Grade XII students in the topic of reaction rates. The research employed a quasi-experimental method using a non-equivalent control group design involving 52 students divided into an experimental class and a control class. The research instrument consisted of nine essay questions with a high level of reliability, as indicated by a Cronbach’s Alpha value of 0.740. The findings revealed that the implementation of the STEM-based PjBL model significantly enhanced students’ scientific thinking skills. This improvement was evident across all indicators measured in the experimental class, including the logical indicator, which reached 75.9%, the analytical indicator at 68.1%, the systematic indicator at 59.1%, the deductive indicator at 59.9%, and the inductive indicator, which increased to 68.1%. Furthermore, the effect size analysis yielded a score of 1.632, which falls into the very large category. Therefore, it can be concluded that the implementation of the STEM-based Project-Based Learning (PjBL) model had a very strong effect on improving students’ scientific thinking skills.
The Effect of Flipped Classroom Assisted by Edpuzzle and PhET Simulation on Students’ Critical Thinking Skills in Electrochemistry Fitriyanti Ahmad; Masrid Pikoli; Erni Mohamad; Mangara Sihaloho; Thayban Thayban; Erga Kurniawati; La Alio
Jambura Journal of Educational Chemistry Vol 8, No 2 (2026): August
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37905/jjec.v8i2.38902

Abstract

Students’ critical thinking skills, particularly in electrochemistry, remain low because instruction tends to be teacher-centered and makes insufficient use of interactive technology. In addition, studies investigating the use of the flipped classroom approach assisted by Edpuzzle and PhET simulations in electrochemistry learning remain scarce. Therefore, this research was conducted to examine the impact of applying a flipped classroom model integrated with Edpuzzle and PhET simulations on students’ critical thinking skills. The study used a quasi-experimental method with a non-equivalent control group design. The research sample consisted of 12th-grade students at SMA Negeri 2 Limboto, selected through purposive sampling. The research instrument consisted of a 10-item essay test that was valid and reliable, with a Cronbach’s Alpha value of 0.814. The results showed that the average critical thinking ability of students in the experimental class increased from 29.17 to 74.26, with an N-Gain value of 0.63, classified as moderate. The Wilcoxon Signed-Rank test showed a significant difference between the pretest and posttest in both classes (p < 0.05), while the Mann–Whitney U test showed no significant difference in the pretest (p = 0.060 > 0.05), but a significant difference in the posttest (p < 0.05). Thus, the flipped classroom model supported by Edpuzzle and PhET simulations can serve as an alternative learning approach to enhance students’ critical thinking skills in electrochemistry.
Co-Authors Afrilia Ali Ahmad Faqih Akram La Kilo Anwar, Nurhayati Ardiyanto Saleh Modjo Arviani Arviani Asisah, Asisah Astin Lukum Bintang Maharani Daing, Hardianti Damayanti, Elok Deasy Natalia Botutihe Dewi Wahyuni K. Baderan Dilapanga, Windi Erga Kurniawati Erni Mohamad fitriyanti Ahmad Fuad Pontoiyo Hamid Majelis Haris Munandar Hasim Hasim Hendri Iyabu Jafar La Kilo Julhim S Tangio Kostiawan Sukamto, Kostiawan La Ode Aman Lukman A. R. Laliyo Mahludin H. Baruwadi Manaa, Ramayanti N Mangara Sihaloho Mardjan Paputungan Masrid Pikoli Meli A. Rasid Moh Izwarto Piyohu Muratni Ismail Netty Ino Ischak Nita Suleman Nurhayati Bialangi Pahrun, Abdul Wahab Ramli Utina Rauf, Nuramna Rifki Brahmono Idrus Riska Aksara Riskah Fitriani Adam Sabora, Ririn S. Saleh, Sri Deltalia Sangkota, Vivi Dia Afrianti Shuid, Ahmad Naqib bin Supriadin, Yogi Syam, Muh Arfah Syam, Muh. Arfah Thayban, Thayban Umar, Ahmat Sudir Wahyuningrum Istiqomah Weny J.A Musa Wiwin Rewini Kunusa Yuliana Pariyonga Yulianti Yulianti Yuszda K Salimi Zaenul Wathoni