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All Journal HAYATI Journal of Biosciences VALENSI Cakrawala Pendidikan Jurnal Kependidikan: Penelitian Inovasi Pembelajaran JPMS (Jurnal Pendidikan Matematika dan Sains) Jurnal Penelitian dan Evaluasi Pendidikan JOURNAL OF EDUCATION Jurnal Penelitian Saintek CAKRA KIMIA (Indonesian E-Journal of Applied Chemistry) CHEMISTRY PROGRESS Jurnal Pendidikan Kimia Indonesia Jurnal Sains Dasar Jurnal Pendidikan Indonesia Jurnal Matematika & Sains Journal of Mathematical and Fundamental Sciences BERITA BIOLOGI JURNAL BIOLOGI INDONESIA ZOO INDONESIA Jurnal Penelitian Pendidikan IPA (JPPIPA) ALCHEMY Jurnal Penelitian Kimia Jurnal Pendidikan Kimia (JPKim) Indonesian Journal of Chemistry Formatif: Jurnal Ilmiah Pendidikan MIPA Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Jambura Journal of Educational Chemistry Molekul: Jurnal Ilmiah Kimia Jurnal Entomologi Indonesia Kumawula: Jurnal Pengabdian Kepada Masyarakat BIO-EDU: Jurnal Pendidikan Biologi Jurnal Inovasi Pembelajaran Kimia (Journal Of Innovation in Chemistry Education) Journal of Innovation in Educational and Cultural Research Zoo Indonesia INSECTA: Integrative Science Education and Teaching Activity Journal International Journal of Social Science, Educational, Economics, Agriculture Research, and Technology (IJSET) Makara Journal of Science UNESA Journal of Chemical Education Jurnal Pengabdian dan Pemberdayaan Masyarakat Indonesia AMPLITUDO: Journal of Science & Technology Innovation Jurnal Elemen Kimia Jurnal Riset Pembelajaran Kimia Indonesian Journal on Learning and Advanced Education (IJOLAE)
Hari Sutrisno
Universitas Negeri Yogyakarta
Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering 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 Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Physics Public Health Social Sciences Other

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Chemistry Teachers’ Self-efficacy for Using Information and Communication Technology: A Survey Cross Sectional Insani Efrili Yanti; Hari Sutrisno
Jurnal Penelitian Pendidikan IPA Vol 10 No 9 (2024): September
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i9.7419

Abstract

The utilization of ICT in education could be further optimized due to the low self-efficacy of teachers. Teachers' years of teaching experience and the status of their schools have an influence on their ICT self-efficacy. This study aims to describe the differences in ICT self-efficacy among chemistry teachers based on their teaching experience and school status. This study used a quantitative approach with a cross-sectional survey method. The research was conducted in 31 high schools in Pekanbaru City and included a randomly selected sample of 50 chemistry teachers. The research instruments consisted of ICT self-efficacy questionnaires 14 items. ICT self-efficacy instrument declared valid and reliable using the Rasch model test. Additionally, interview data were employed to reinforce the findings from the questionnaire. The research questionnaire data underwent processing using analysis descriptive statistics and a two-way ANOVA test with SPSS. The results of the research show that there is a significant difference in the ICT self-efficacy of chemistry teachers based on the teacher's teaching experience with significance level of 0.005 and there is no difference the ICT self-efficacy of chemistry teachers based on school status with significance level of 0.783. The effect size test shows that the partial eta square value for the effect of teaching experience belongs to the high category while school status belongs to the low category.
IMPLEMENTATION OF LEARNING MODELS PBL- REDIPPER FOR INCREASE ABILITY THINK CRITICAL AND COLLABORATION STUDENTS ON ATOMIC STRUCTURE MATERIAL Pravita Saktiyani; Hari Sutrisno
International Journal of Social Science, Educational, Economics, Agriculture Research and Technology (IJSET) Vol. 5 No. 7 (2026): JUNE
Publisher : RADJA PUBLIKA

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Abstract

Study This aim For analyze influence application of learning models Problem-Based Learning integrated REDIPPER (PBL-REDIPPER) against ability think critical (KBK) and ability collaboration (KOL) participants educate on the material atomic structure . Type of research used is experiment quasi - experimental with​ design pretest-posttest control group design . Subject study involving 72 participants educate class XI in one of the senior high schools in Cirebon Regency which is divided into to in two groups , namely class experiments (n = 36) with the PBL-REDIPPER model and class control (n = 36) with the Direct Instruction (DI) model . Research data collected use instrument test essay ability think critical and sheet observation skills collaboration that has been validated . Data analysis techniques using analysis Multivariate Analysis of Variance (MANOVA) assisted by IBM SPSS Statistics 26. Analysis results statistics multivariate show that the PBL-REDIPPER model provides influence very significant simultaneity to ability think critical and collaborative participant educate in a way simultaneously (p = 0.007 < 0.01$) with contribution practical as big as 13.4% of which is included in category effect moderate . Univariate test results partial also confirms significant differences in each variable bound , where the learning model give contribution effect as big as 13.1% ( category currently ) to variation ability think critical (p = 0.002), and as big as 11.5% ( category currently ) to variation ability collaboration participant educated (p = 0.004). With Thus , the implementation PBL-REDIPPER syntax is proven effective in facilitate reconstruction draft abstract chemistry at a time optimize competence sociocognitive 21st century participants educate .
Visualization Technology in High School Chemistry: A Systematic Review on Representations and Pedagogical Strategies Rahma Tia; Hari Sutrisno
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.v8i2.39223

Abstract

The basic concept of chemistry which can’t be seen or touched poses a major cognitive challenge at the secondary school level, making the integration of digital visualization technologies essential for facilitating students' understanding of chemical representations. This study aims to analyze emerging trends in digital visualization technologies and identify the pedagogical strategies most prominently employed to support the development of chemical representational competence. A Systematic Literature Review (SLR) was conducted following the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) protocol, analyzing 27 articles retrieved from the Scopus, ERIC, and Springer databases published between 2015 and 2025. The findings indicate that interactive simulations and computer-based visualization tools represent the dominant digital visualization technology trend, primarily supporting an integrated representation pattern that connects the macroscopic, sub-microscopic, and symbolic levels. Analysis of learning strategies revealed six principal categories, with Inquiry & Discovery Learning as the most frequently integrated model (25.9%), followed by Computational & Multimedia Learning (18.5%) and Model-Based Learning (14.8%). These findings suggest that the effectiveness of digital visualization technologies in chemistry education is contingent upon its strategic integration within active pedagogical designs that position students as active participants in constructing conceptual understanding through scientific inquiry.
Electronic Structure of Vanadium-Doped TiO2 of Both Anatase and Rutile Based on Density Functional Theory (DFT) Approach Hari Sutrisno
ALCHEMY Jurnal Penelitian Kimia Vol 14, No 1 (2018): March
Publisher : UNIVERSITAS SEBELAS MARET (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/alchemy.14.1.11374.60-71

Abstract

Study of the theoretical  approah to calculate the band structure and density of states (DOS) of vanadium-doped TiO2 of both anatase and rutile have been done. The first-principle calculations were done using supercell (2x1x1) method. The first-principle calculation of V-doped TiO2 of both anatase and rutile were analyzed by density-functional theory (DFT) with generalized gradient approximation from Perdew-Burke-Ernzerhof (GGA+PBE), Perdew-Wang’s 1991 (GGA+PW91) and local density approximation (LDA) for exchange-correlation functionals. The calculation of electronic structures show that the V-doped TiO2-anatase with high concentration (7.93%) in 24 atoms are direct- and indirect-gap semiconductor, whereas the V-doped TiO2-rutile with high concentration (15.79%) in 12 atoms is direct-gap semiconductor. The V-doped TiO2 of both anatase and rutile produce the intermediate bands in the upper states. Ihe V-doped anatase produces intermediate band, which is 2.05, 2.04, 2.06 eV above the valence band for GGA+PBE, GGA+PW91 and LDA, respectively. Meanwhile the V-doped rutile producesintermediate band, which is 1.76, 1.82, 1.74 eV above the valence band for GGA+PBE, GGA+PW91 and LDA, respectively.
ANALISIS PERHITUNGAN AWAL STRUKTUR ELEKTRONIK DAN MIKROSTRUKTUR TiO2 ANATAS TERDADAH ION Cr3+ Adinda Putri Puspitasari; Hari Sutrisno
Jurnal Elemen Kimia Vol 10, No 1 (2026): Jurnal Elemen Kimia
Publisher : Universitas Negeri Yogyakarta

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Abstract

Titanium dioksida seringkali digunakan sebagai bahan fotokatalis namun masih memiliki kelemahan karena memiliki energi celah pita yang besar sehingga perlu dilakukan modifikasi untuk menurunkannya. Penelitian ini bertujuan untuk menentukan pengaruh variasi kuantitas ion sebagai pendadah  anatas terhadap mikrostruktur dan struktur elektronik. Metode yang digunakan adalah pendekatan density functional theory (DFT) dengan korelasi perubahan Generalizated Gradien Approximation+Perdew-Burke-Ernzerhof fos Solid (GGA+PBESol) yang dilakukan menggunakan aplikasi BIOVIA Material Studio 2017 subprogram CASTEP. Variasi kuantitas ion Cr3+ yang digunakan adalah 0; 2; 4,5; 7; 9,5; 12; 14,5; 17; 19,5; 22; dan 24,5%. Hasil perhitungan mikrostruktur TiO2 dengan berbagai variasi kuantitas pendadah ion Cr3+ tidak mengalami perubahan struktur, namun penambahan doping mengakibatkan kecenderungan penurunan volume dan parameter kisi dengan struktur anatas space group /amd. Nilai struktur elektronik dari TiO2 anatas terdadah ion Cr3+ menghasilkan penurunan energi celah pita dari pita konduksi ke pita valensi dengan nilai energi celah pita 3,2 sampai 2,995 eV. Struktur DOS mengalami pergeseran dari pita konduksi ke pita valensi. Doping optimal berada pada 14,5%, secara keseluruhan  anatas yang didoping ion  menghasilkan celah pita tidak langsung (indirect gap) yang bersifat semikonduktor.Kata Kunci: DFT; Kromium; Mikrostruktur; Struktur elektronik; TiO2 Anatas
PENGARUH VARIASI MOL AWAL ATOM NITROGEN ( N ) TERHADAP KRISTALINITAS, UKURAN PARTIKEL, KARAKTER MIKROSTRUKTUR, DAN SIFAT OPTIK PADA ZnO(1-x)Nx Maria Luisella Anadya Putri Chrisberta; Hari Sutrisno
Jurnal Elemen Kimia Vol 10, No 1 (2026): Jurnal Elemen Kimia
Publisher : Universitas Negeri Yogyakarta

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Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh variasi konsentrasi awal mol atom nitrogen terhadap  (1) kristalinitas, ukuran partikel, (2) karakteristik mikrostruktur, dan (3) sifat optik (band gap) ZnO(1-x)Nx. yang disintesis dengan metode hidrotermal.Sintesis ZnO(1-x)Nx dilakukan dengan menggunakan prekursor Zn yaitu seng asetat dihidrat dan urea untuk prekursor nitrogen. Variasi konsentrasi mol awal nitrogen dilakukan dengan nilai x= 0; 0,05; 0,08; 0,1; 0,15 dengan proses hidrotermal yang dilakukan pada suhu 150℃ selama 6 jam,  diikuti oleh kalsinasi pada temperatur 400℃ dengan waktu 1 jam. Selanjutnya, pengaruh variasi konsentrasi mol awal nitrogen dipelajari dengan  mengamati kristalinitas, ukuran partikel, karakter mikrostruktur dan sifat optik menggunakan instrumen X-ray Diffraction (XRD) dan UV-Vis Diffuse  Reflectance Spectroscopy (UV-Vis DRS).Hasil penelitian ini menunjukkan: (1) seluruh sampel ZnO(1-x)Nx memiliki fasa wurtzite, sistem kristal hexagonal dengan grup ruang P63mc. Grafik tren kristalinitas naik dan grafik ukuran partikel turun lalu naik kembali seiring bertambahnya mol nitrogen. Sampel optimal pada ZnO 0,1 dengan nilai % kritalinitas sebesar 89,2% dan ukuran partikel sebesar 28,02 nm, (2) penambahan konsentrasi mol nitrogen terbukti terpengaruh terhadap karakter mikrostruktur. Variasi optimal pada sampel ZnO 0,1, dengan nilai a=b= 3,251 Å  c= 5,2072 Å, volume sel sebesar 47,66 Å3, dan panjang ikatan Zn – O ax. 1.9791 Å dan eq. 1.9772 Å, (3) semua sampel memiliki jenis transisi energi celah pita langsung (direct) dimana semakin tinggi konsentrasi awal mol nitrogen yang ditambahkan menyebabkan naiknya pita valensi sehingga energi celah pita semakin kecil, variasi optimal pada sampel ZnO 0,1 (x= 0,1) dengan energi celah pita sebesar 3,17 eV dan panjang gelomang sebesar 390,31 nm. Sehingga terbukti penambahan konsentrasi mol nitrogen dapat mempengaruhi sifat optik ZnO(1-x)Nx.Kata kunci: Hidrotermal, doping, mikrostruktur, sifat optik, ZnO
Implementing the INTER-SETS Learning Model in Acid–Base Chemistry to Improve Students' Science Process Skills and Scientific Attitudes Feri Andi Syuhada; Eli Rohaeti; Hari Sutrisno; Sakinah Zubair
Jurnal Penelitian Pendidikan IPA Vol 12 No 7 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i7.15434

Abstract

This study examined whether students’ science process skills (SP) and scientific attitudes (SA) changed following the implementation of the INTER-SETS learning model in acid–base chemistry. A pre-experimental one-group pretest–posttest design involving 34 senior high school students was employed. Science process skills were measured using an essay test, whereas scientific attitudes were assessed using a validated questionnaire. Data were analyzed using one-sample Hotelling’s T² based on difference scores (posttest–pretest), followed by univariate analyses at a significance level of 0.05. The results revealed statistically significant simultaneous improvements in SP and SA after implementing the INTER-SETS learning model (Hotelling’s Trace = 11.37, F(2, 28) = 159.24, p < 0.001). Follow-up analyses also showed significant improvements in science process skills (F(1, 29) = 197.42, p < 0.001) and scientific attitudes (F(1, 29) = 57.80, p < 0.001). These findings suggest that integrating guided inquiry with Science, Environment, Technology, and Society (SETS) contexts provides meaningful learning experiences associated with improvements in students’ scientific competencies and attitudes during acid–based learning. However, because this study employed a one-group pretest–posttest design, the findings should be interpreted as evidence of improvement rather than definitive causal effects.
Development and Validation of a Learning Independence Instrument for Chemistry Education Using Exploratory and Confirmatory Factor Analysis Feri Andi Syuhada; Eli Rohaeti; Hari Sutrisno; Azlan Kamari; Rasamimanana Joronavalona
AMPLITUDO : Journal of Science and Technology Innovation Vol. 5 No. 2 (2026): August
Publisher : Balai Publikasi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56566/amplitudo.v5i2.792

Abstract

This study aimed to develop and validate a short-form instrument for assessing students’ learning independence in chemistry education among senior high school students using Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA). A quantitative survey was conducted involving 131 twelfth-grade science students from two public senior high schools in Sleman Regency, Indonesia, selected through random sampling. Data were collected using a 40-item questionnaire measured on a five-point Likert scale, with the items designed to assess students’ independence in managing, engaging in, and taking responsibility for their chemistry learning, and analyzed using EFA and CFA. The EFA, conducted using JASP version 0.95.4, identified a four-factor structure consisting of self-management, motivation, responsibility, and self-confidence and reduced the initial instrument to 34 items with factor loadings above 0.40. Subsequent CFA further refined the instrument into a parsimonious 14-item version with standardized factor loadings exceeding 0.50, indicating acceptable construct validity. Reliability analysis demonstrated acceptable construct reliability (CR > 0.60, ranging from 0.64 to 0.78). The average variance extracted (AVE) values ranged from 0.41 to 0.49, with self-management, motivation, and responsibility each obtaining an AVE value of 0.41, while self-confidence reached 0.49. Although these AVE values indicated marginal convergent validity, the constructs remained acceptable when evaluated alongside their adequate CR values. The findings suggest that the final 14-item instrument provides acceptable psychometric evidence and offers an empirically supported measure for assessing senior high school students’ learning independence in chemistry education, although further validation in broader chemistry-learning populations and educational settings is recommended
Co-Authors . DARMAWAN . Ismail . SUPUTA Abukasim, Sudarto Abukasim, Sudarto M. Achmad Saiful Whatoni Adinda Putri Puspitasari Ajeng Widya Indriana Al Ansary, Ahmad Luthfi Alita, Alita Alusti Cundo Manik Amirah, Giska Anik Nur Laili Antonia Fransiska Laka Ariswan Ariswan Ariswan, Ariswam Aurelia Revi Pusbelina Azlan Kamari Balke, Michael Bruno Cancian de Araujo Cahyorini Kusumawardani Chrisoph Hauser CIPTO WALUYO Dahlan, Jafar Das Salirawati de Araujo, Bruno Cancian Desfi Annisa Desfi Annisa Desfi Annisa, Desfi Djunijanti Peggie Djunijanti Peggie, Djunijanti Dwi Anggi Marini Eddy Nurtjahya Eko Wahyu Budi Darmawan Eli Rohaeti Endang Dwi Siswani Endang Dwi Siswani Endang Widjajanti Laksono FX Fajar Naqsyahbandi Feri Andi Syuhada Hagus Tarno Hari Purnomo Hauser, Chrisoph I WAYAN SUANA Ifan Rivaldo Iman hidayat Insani Efrili Yanti Isnaya Khamida Zulfah Jajang Muhariyansah Kristian Handoyo Sugiyarto Kristina von Rintelen Kun Sri Budiasih Lutfi Afifah, Lutfi Luthfiah, Siska M.Sulthon Nur Harman Syah Putra Maesaroh Maesaroh Maesaroh Maesaroh Maesaroh Maesaroh Maria Luisella Anadya Putri Chrisberta Maria Tensiana Tima Michael Balke Muhamad Rom Ali Fikri Mursyidin, Abdul Halim Narakusumo, Raden Pramesa Nasihah, Durrotun Nensi Ulfatun Khasanan NUNUK WIDYASTUTI Nur Kholifah, Dwi Pravita Saktiyani Purwaningsih , Dyah Raden Pramesa Narakusumo Rahma Tia Rais Assad Faiz Ramadhan, Muhammad Hafizh Rasamimanana Joronavalona Ratna Novita Sari Retno Arianingrum Rizqiyah, Fatihatur ROSICHON UBAIDILLAH Sandra Desfa Jayanti Satriyo Restu Adhi Schmidt, Stefan Setiawan, Muhamad Reza SISWO POLANDONO Sri Novita Yanda Stefan Schmidt Suasti Ayu Triwijiastuti Sudarsono Suharto . Suharto Suharto Sunarto Sunarto Sunarto Sunarto Susila Kristianingrum Thomas von Rintelen Toto Himawan Vina Ayu Mu&#039;izayanti von Rintelen, Kristina von Rintelen, Thomas wan zahara zaitu hania Wipsar Sunu Brams Dwandaru Yanda, Sri Novita Zubair, Sakinah