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All Journal Jurnal Entropi Sainstek Jurnal Tadris Kimiya Lantanida Journal JSFK (Jurnal Sains Farmasi & Klinis) Jambura Journal of Educational Chemistry Jurnal Riset Rumpun Matematika dan Ilmu Pengetahuan Alam (JURRIMIPA) Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Nian Tana Sikka: Jurnal Ilmiah Mahasiswa Pentagon: Jurnal Matematika dan Ilmu Pengetahuan Alam Algoritma: Jurnal Matematika, Ilmu Pengetahuan Alam, Kebumian dan Angkasa Damhil: Jurnal Pengabdian kepada Masyarakat Jurnal Pendidikan Kimia, Fisika dan Biologi
Mangara Sihaloho
Universitas Negeri Gorontalo
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Earth & Planetary Sciences Education Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Mathematics Medicine & Pharmacology Public Health Social Sciences Other

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Identifikasi Kemampuan Berpikir Kreatif Siswa dalam Menyelesaikan Soal Open Ended Pada Materi Larutan Elektrolit Dan Non-Elektrolit Sriyanti S Said; Erni Mohamad; Masrid Pikoli; Mangara Sihaloho; Lukman A.R Laliyo; Netty Ino Ischak; Yuszda K. Salimi
Jambura Journal of Educational Chemistry Vol 4, No 2 (2022): Agustus
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjec.v4i2.14491

Abstract

Penelitian ini bertujuan untuk mengetahui kemampuan berpikir kreatif siswa dalam menyelesaikan soal open-ended pada materi larutan elektrolit dan non-elektrolit di SMA Negeri 1 Gorontalo. Pendekatan yang digunakan dalam penelitian ini adalah kualitatif dengan jenis penelitian deskriptif. Responden penelitian ada 43 siswa kelas X IPA 1 di SMA Negeri 1 Gorontalo. Pengumpulan data diperoleh dengan cara observasi, pemberian tes dan dokumentasi. Data yang digunakan berupa data hasil tes kemampuan berpikir kreatif siswa yang menggunakan 3 indikator yaitu indikator kefasihan (fluency), keluwesan (flexibility), dan kebaruan (originality). Hasil penelitian menunjukkan bahwa pencapaian rata-rata kemampuan berpikir kreatif siswa pada indikator kefasihan (fluency) memperoleh nilai 69,37% (kategori baik), indikator keluwesan (flexibility) siswa mendapatkan nilai sebesar 61,53% (kategori baik), dan indikator kebaruan (originality) memperoleh nilai 56,58% (kategori cukup).
MODEL MENTAL SISWA SMA DALAM MEMAHAMI KONSEP LARUTAN ELEKTROLIT DAN NON-ELEKTROLIT Suliyana Ibrahim; Mangara Sihaloho; Masrid Pikoli
Lantanida Journal Vol 10, No 2 (2022)
Publisher : UIN AR-RANIRY

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22373/lj.v10i2.14533

Abstract

This objective of this study for investigate mental models of SMA Negeri 1 Telaga students about electrolyte and non-electrolyte solutions. Data was collected by giving a mental model test in the form of two-level multiple choice in class X involving 196 students. The results showed that the analysis of the mental model of students of class X science about electrolyte and non-electrolyte solutions was 38% classified as scientific mental models and 62% alternative mental models, which consisted of 30% partially correct mental models, 32% misconceptions (Specific Misconception) and 0% no response (No Responds). Thus, most students do not yet have a complete mental model in understanding the material of electrolyte and non-electrolyte solutions.
Pencarian Inhibitor DYRK2 dari Database Bahan Alam Zinc15: Analisis Farmakofor, Simulasi Docking dan Dinamika Molekuler La Ode Aman; Mangara Sihaloho; Arfan Arfan
Jurnal Sains Farmasi & Klinis Vol 10, No 1 (2023): J Sains Farm Klin 10(1), April 2023
Publisher : Fakultas Farmasi Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jsfk.10.1.100-113.2023

Abstract

DYRK2 (Dual-specificity tyrosine phosphorylation-regulated kinase 2) merupakan protein kinase yang memiliki banyak peranan dalam berbagai proses biologis, termasuk pembelahan sel, proliferasi sel, diferensiasi sel, dan apoptosis. DYRK2 diantaranya terlibat dalam regulasi siklus sel dengan cara mengatur aktivitas proteasom 26S sehingga inhibisi aktivitas DYRK2 dapat menghambat fungsi proteasom 26S dan mengurangi proliferasi sel kanker. Secara in vitro, kurkumin menunjukan kemampuan mengurangi proliferasi sel kanker melalui penghambatan enzim DYRK2. Pada penelitian ini, analog kurkumin telah diskrining dari database bahan alam Zinc15 dengan menggunakan model farmakofor yang diperoleg dengan pendekatan berbasis ligan. Hasil skrining kemudian dievaluasi dengan menerapkan teknik docking molekuler dan dinamika molekuler berdasarkan energi interaksi, rata-rata energi pengikatan bebas dan stabilitas interaksi antara ligan dan situs aktif DYRK2. Skrining terhadap 270.547 molekul dari database bahan alam Zinc15 menghasilkan 110 senyawa hit terpilih. Dengan mempertimbangkan hasil simulasi docking dan dinamika molekuler, tiga analog kurkumin prospektif telah dipilih yaitu ZINC000085597244, ZINC000217945958, dan ZINC000217643970. Molekul-molekul ini memiliki kriteria yang lebih baik dibandingkan kurkumin pada beberapa kriteria, seperti energi interaksi, energi pengikatan bebas, dan stabilitas interaksi dengan target. Disimpulkan, senyawa-senyawa ZINC000085597244, ZINC000217945958, dan ZINC000217643970 diprediksi sebagai kandidat potensial untuk obat anti-kanker dengan mekanisme aksi spesifik terhadap DYRK2.
Analisis Penguasaan Konsep Siswa dalam Menyelesaikan Soal Kimia pada Materi Konsep Mol Abdul Wahab Pahrun; Mangara Sihaloho; Suti Anggriani Latief; Masrid Pikoli; Lukman Abdul Rauf Laliyo; Ishak Isa; Thayban Thayban; Ahmat Sudir Umar
Jambura Journal of Educational Chemistry Vol 5, No 1 (2023): Februari
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjec.v5i1.16672

Abstract

Penelitian ini bertujuan untuk menganalisis penguasaan konsep siswa kelas XI IPA dalam menyelesaikan soal kimia pada materi konsep mol di MAN 1 Kota Gorontalo. Pendekatan yang digunakan dalam penelitian ini adalah kualitatif dengan jenis penelitian deskriptif. Instrumen yang digunakan dalam penelitian ini yaitu pilihan ganda sebanyak 10 butir soal. Instrumen telah dilakukan uji validitas dengan hasil validasi instrumen yang diperoleh sebesar 93,3%. Responden penelitian ada 131 siswa kelas XI IPA di MAN 1 Kota Gorontalo. Pengumpulan data diperoleh dengan cara observasi, pemberian tes dan dokumentasi. Hasil penelitian menunjukkan bahwa penguasaan konsep siswa pada indikator menjelaskan konsep mol memperoleh nilai persentase sebesar 47% dengan kategori kurang, pada indikator menghitung massa atom relatif (Ar) dan massa molekul relatif (Mr) memperoleh nilai rata-rata persentase sebesar 87% dengan kategori Baik, pada indikator Mengkonversi jumlah mol dengan jumlah partikel, massa dan volume zat memperoleh nilai rata-rata persentase sebesar 79% dengan kategori baik, dan untuk indikator memprediksi rumus empiris molekul dan air kristal serta kadar zat dalam senyawa memperoleh persentase sebesar 44% dengan kategori kurang.
Measuring Students' Scientific Argumentation Skills in Explaining Phenomena Related to Acid-Base Concepts Rahmawati Hilala; Lukman Abdul Rauf Laliyo*; Jafar La Kilo; Julhim S. Tangio; Erni Mohamad; Mangara Sihaloho
Jurnal Pendidikan Sains Indonesia Vol 11, No 2 (2023): APRIL 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1058.995 KB) | DOI: 10.24815/jpsi.v11i2.27822

Abstract

Scientific argumentation is one of the main competencies of students in communicating chemical phenomena through the application of conceptual mastery that they have understood. The development of this ability has been postulated in the 2013 curriculum through constructivist-based learning approaches and scientific inquiry, either in the classroom or the laboratory. However, there is relatively little information on how students' scientific argumentation skills develop. This study aims to measure students' scientific argumentation skills in explaining five science phenomena related to the acid-base concept, namely: acid rain, salt crystal making, the use of antacids as ulcer medicine, the use of CaMgCO3 dolomite fertilizer, and the difference in the acidity level of HCl and H2SO4, using Rasch modeling. Each phenomenon was measured by three multiple-choice test items, which were developed to test students' ability to make claims (Q1), evidence (Q2), and justification (Q3). The data were analyzed using Rasch modeling, allowing researchers to measure the item and individual respondent levels. Respondents were 100 chemistry students in Gorontalo, who were differentiated in gender and adversity quotient. The results showed that the measurement instrument has good validity and reliability. In addition, it was found that students' abilities differed; some items responded differently regarding gender and adversity quotient. Most students tended to be weak in explaining the phenomenon of acid rain, the use of antacids for ulcer disease, the use of dolomite fertilizer, and the difference in the acidity level of HCl and H2SO4
Pembelajaran dengan Model Discovery Learning Berbasis Chemdraw untuk Meningkatkan Pemahaman Konsep Ikatan Kovalen Apriyanto Syawal; Lukman Abdul Rauf Laliyo; Mangara Sihaloho; Haris Munandar
Jambura Journal of Educational Chemistry Vol 4, No 1 (2022): Februari
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjec.v4i1.13222

Abstract

Tujuan penelitian ini adalah untuk mengetahui peningkatan pemahaman konsep ikatan kovalen siswa kelas X IPA 3 di SMA Negeri 1 Suwawa dengan model pembelajaran discovery learning berbasis chemdraw. Penelitian ini dilakukan di SMA Negeri 1 Suwawa pada materi ikatan kovalen dengan jenis penelitian tindakan kelas (PTK). Subjek dalam penelitian ini adalah siswa kelas X IPA 3 di SMA Negeri 1 Suwawa yang berjumlah 29 orang. Penelitian ini dilakukan dalam 2 siklus. Tes yang digunakan adalah tes uraian dengan jumlah soal 5 nomor tiap siklus. Pengukuruan pemahaman konsep siswa dianalisis dengan cara menghitung persentase berdasarkan jumlah skor siswa yang dibagi dengan skor total dan dikalikan 100% dengan kriteria tingkat pemahaman tinggi, sedang, dan rendah. Hasil presentase pemahaman konsep pada siklus I sebesar 73,1% dan meningkat pada siklus II sebesar 95,2% sehingga telah memenuhi indikator kinerja sebesar 85%. Hal ini juga didukung oleh kegiatan guru dan kegiatan siswa yang mengalami peningkatan yang awalnya pada siklus I persentase kegiatan guru dari 40,7% dengan kategori cukup menjadi 95,7% dengan kategori sangat baik dan persentase kegiatan siswa dari 39,1% dengan kategori kurang menjadi 94,1% dengan kategori sangat baik.
Analisis Kemampuan Berpikir Kreatif Siswa pada Materi Sel Volta dan Sel Elektrolisis dengan Menggunakan Tes Open-Ended Problem Erni Mohamad; Hendri Iyabu; Wiwiyani Wiwiyani; Mangara Sihaloho; Nurhayati Bialangi; Akram La Kilo
Jambura Journal of Educational Chemistry Vol 5, No 2 (2023): Agustus
Publisher : Universitas Negeri Gorontalo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34312/jjec.v5i2.14492

Abstract

This study aims to determine students' creative thinking abilities in the topics of voltaic cells and electrolysis by using open-ended problem tests at SMA Negeri 4 Gorontalo, to understand teachers' responses to the administered open-ended problem tests, and to gauge students' responses to the administered open-ended problem tests. The research approach employed is descriptive qualitative. The subjects of this study were 62 twelfth-grade science students and 2 chemistry teachers at SMA Negeri 4 Gorontalo. The data utilized in the study consist of the results of students' creative thinking ability tests using open-ended problem tests, as well as the responses gathered from questionnaires regarding the test item model. The research findings reveal that students' creative thinking abilities in terms of fluency aspect are at 47.8% categorized as moderately creative, the flexibility aspect at 45.4% categorized as moderately creative, and the originality aspect at 31.9% categorized as less creative. The results from the teachers' questionnaire responses regarding the open-ended problem test model show a positive response rate of 80%, while the results from the students' questionnaire responses indicate a positive response rate of 61%.
Measuring Students' Scientific Argumentation Skills in Explaining Phenomena Related to Acid-Base Concepts Rahmawati Hilala; Lukman Abdul Rauf Laliyo*; Jafar La Kilo; Julhim S. Tangio; Erni Mohamad; Mangara Sihaloho
Jurnal Pendidikan Sains Indonesia Vol 11, No 2 (2023): APRIL 2023
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jpsi.v11i2.27822

Abstract

Scientific argumentation is one of the main competencies of students in communicating chemical phenomena through the application of conceptual mastery that they have understood. The development of this ability has been postulated in the 2013 curriculum through constructivist-based learning approaches and scientific inquiry, either in the classroom or the laboratory. However, there is relatively little information on how students' scientific argumentation skills develop. This study aims to measure students' scientific argumentation skills in explaining five science phenomena related to the acid-base concept, namely: acid rain, salt crystal making, the use of antacids as ulcer medicine, the use of CaMgCO3 dolomite fertilizer, and the difference in the acidity level of HCl and H2SO4, using Rasch modeling. Each phenomenon was measured by three multiple-choice test items, which were developed to test students' ability to make claims (Q1), evidence (Q2), and justification (Q3). The data were analyzed using Rasch modeling, allowing researchers to measure the item and individual respondent levels. Respondents were 100 chemistry students in Gorontalo, who were differentiated in gender and adversity quotient. The results showed that the measurement instrument has good validity and reliability. In addition, it was found that students' abilities differed; some items responded differently regarding gender and adversity quotient. Most students tended to be weak in explaining the phenomenon of acid rain, the use of antacids for ulcer disease, the use of dolomite fertilizer, and the difference in the acidity level of HCl and H2SO4
Analisis Keterampilan Berpikir Kreatif Siswa SMA Negeri 4 Gorontalo Dalam Menyelesaikan Soal Hots Pada Materi Laju Reaksi Mangara Sihaloho; Asaria Dakhi; La Alio
Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa Vol. 2 No. 3 (2024): Mei : Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkas
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/algoritma.v2i3.61

Abstract

This research aims to determine the achievement of aspects of students' creative thinking skills and the data collection technique for this research uses an essay test with 4 questions, this research is qualitative research, the sample in this research is 100 students of class XI-IPA. The results of the research show that students' creative thinking skills as a whole fall into the quite creative category with an average total percentage of 60%. With the level of students' creative thinking skills in solving High Order Thinking Skills (HOTS) questions on the reaction rate material in the fluency aspect of 58% in the quite creative category, in the flexibility aspect it was 53% in the quite creative category, in the originality aspect it was 70% in the quite good category, and the level of students' creative thinking skills in the elaboration aspect was 59% in the quite creative category.
Identifikasi Pemahaman Konsep Siswa pada Materi Hidrolisis Garam di Kelas XI SMA Negeri 3 Gorontalo Menggunakan Test Diagnostik Three Tier Multiple Choice Mardjan Paputungan; Mangara Sihaloho; Erga Kurniawati; Karmila B. Enu
Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan Angkasa Vol. 2 No. 5 (2024): September: Algoritma : Jurnal Matematika, Ilmu pengetahuan Alam, Kebumian dan A
Publisher : Asosiasi Riset Ilmu Matematika dan Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62383/algoritma.v2i5.189

Abstract

This research aims to determine student’s conceptual understanding of salt hydrolysis in 11th grade at SMA Negeri 3 Gorontalo using a three-tier multiple-choice diagnostic test. This research employs qualitative descriptive research, with the subjects being 156 students from the 11th grade chemistry class at SMA Negeri 3 Gorontalo. Data was collected using a three-tier multiple-choice diagnostic test consisting of 20 question. The results indicate that, on average, students only understand 18,12% of the salt hydrolysis concept, 43,54% of students experience misconceptions and 38,34% do not understanding the concept. From the identifikation results, the highest level of conceptual understanding was found in indicator 1, which determines the acidic and basic properties of salt-forming compounds, with a percentage 21,66%. The highest level of miskonceptions was found in indicator 2, which analyzes the properties of hydrolyzed salts, with an average of 54,03% and the highest level of lack of understanding was found in indicator 4, which calculates the pH of a hydrolyzed salt solutions, with an average of 47,4%. Overall, it can be stated that 81,88% of students do not correcly understand the material on salt hydrolysis. The indicates that students’ conceptual understanding of salt hydrolysis is very low.
Co-Authors Abdul Wahab Pahrun Ahmad Kadir Kilo Ahmat Sudir Umar Aisyah, Sifa Nurul Akram La Kilo Apriyanto Syawal Arfan Arfan Arfan Arfan Arsyad, Muhammad Arif M. Arwin, Muh. Asaria Dakhi Astin Lukum Botutihe, Deasy N. Dewi Budi Purwati Erga Kurniawati Erni Mohamad Fidya, Fidya Haris Lukum HARIS MUNANDAR Haris Munandar Harni Anhar S. Ambololo Hendri Iyabu Hendri Iyabu Hidanurhayati, Hidanurhayati Ika Riyana Tungkagi Ipilo, Sri Rahayu Ishak Isa Jafar La Kilo Julhim S Tangio Julhim S Tangio Julhim S. Tangio Karmila B. Enu Kasman Kasman La Alio La Ode Aman Lasim, Windi Sulistiyani Limbanadi, Sandi Lukman A. R. Laliyo Maksum, M. Junaidi Manaa, Ramayanti N Mardjan Paputungan Marsya Divya Olii Masrid Pikoli Masrina . Moh Musli Malajai Moh. Fajri Langgene Muh. Arwin Musa, Weny A Najmah Najmah Netty Ino Ischak Ni Wayan Desni Nur, Dian Nurhayati Bialangi Olii, Marsya Divya Openhotman, Openhotman Opir Rumape Perry Zakaria Pinangi, Dea Pratiwi Salilung Puriyanto, Edi Rahman, Sapriyaty Rahmawati Hilala Riryn Tahir Sangkota, Vivi Dia Afrianti Sriyanti S Said Suliyana Ibrahim Sumarlin Soleman Suti Anggriani Latief Sutra S Hadis Thayban Thayban Thayban, Thayban Tri Handayani Weny J.A. Musa Wiwin Rewini Kunusa Wiwiyani Wiwiyani Yuszda K Salimi Zulfa K Muslimin