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Hydrogen: Jurnal Kependidikan Kimia
Published by Universitas Pendidikan Mandalika
ISSN : 23386487     EISSN : 26563061     DOI : Prefix 10.33394
Core Subject : Science, Education,
Chemistry Education
Hydrogen: The Chemistry Education Journal published by the Chemistry Education Study Program which contains articles raised from the results of conceptual research and studies in chemistry and chemistry education including education and learning, device development, media and learning models.
Arjuna Subject : Kimia(semua kategori) - Kimia (Lain-Lain)
Articles 735 Documents
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The Effectiveness of Using Google Sites-based Learning Media on Learning Outcomes in Thermochemistry Dera Ananda Fitri; Erlina; Rachmat Sahputra
Hydrogen: Jurnal Kependidikan Kimia Vol. 14 No. 4 (2026): August 2026
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v14i4.21764

Abstract

Thermochemistry is one of the most challenging chemistry topics because it requires students to understand abstract concepts while solving mathematical problems. Conventional PowerPoint-based instruction often presents learning materials linearly, providing limited opportunities for students to review concepts independently. This study aimed to examine the effectiveness of Google Sites-based learning media on students' learning outcomes in thermochemistry. A quasi-experimental study employing a nonrandomized control group pretest–posttest design was conducted with 71 eleventh-grade students at SMAN 8 Pontianak, comprising 36 students in the experimental group and 35 students in the control group. Both groups were taught by the same teacher using the Discovery Learning model over four instructional meetings, with the only difference being the learning media used Google Sites in the experimental group and PowerPoint in the control group. Data were collected using a validated and reliable four-item essay test administered before and after the intervention and were analyzed using Analysis of Covariance (ANCOVA) with pretest scores as the covariate. After controlling for pretest scores, group membership had a significant effect on posttest scores (F(1,68) = 106.794, p < 0.001, partial η² = 0.611). The experimental group also achieved a higher mean posttest score (81.21) than the control group (63.30). These findings suggest that Google Sites-based learning media was associated with higher thermochemistry learning outcomes than conventional PowerPoint-based instruction. The observed effectiveness may be explained by the integration of multimedia representations, structured instructional resources, self-paced study opportunities, and interactive formative feedback that facilitate students' understanding of abstract thermochemistry concepts.
Development of Discovery Learning-Based Chemistry Learning E-Modules on Atomic Structure Materials to Improve Learning Outcomes of Class X Students Windi Sahayani Purba; Agus Kembaren
Hydrogen: Jurnal Kependidikan Kimia Vol. 14 No. 4 (2026): August 2026
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v14i4.21885

Abstract

This research aims to develop a chemistry-based e-module based on Discovery Learning on Atomic Structure material and to determine its feasibility, practicality, and effectiveness in improving the learning outcomes of class X students of SMA Negeri 13 Medan. The type of research used is Research and Development (R&D) with the ADDIE development model consisting of Analysis, Design, Development, Implementation, and Evaluation stages  . The research subjects consisted of expert validators and students of class X of SMA Negeri 13 Medan. The research instruments used included expert validation sheets, student response questionnaires, and pre-test and post-test questions. Data were analyzed using percentage descriptive analysis and N-Gain test. The results of the study showed that the e-modules developed obtained an average feasibility percentage of 82.20% with the category "Very Feasible", based on the assessment of subject matter experts of 79.76%, media experts of 84.03%, and learning experts of 82.81%. The level of practicality of the e-module based on the response of students obtained an average percentage of 84.73% with the category of "Very Practical". In addition, e-modules have proven to be effective in improving student learning outcomes, as shown by an increase in the average pre-test score of 40.67 to 83.53 in the post-test, with an average N-Gain Score of 0.73 which is in the high category. All students experienced an increase in learning outcomes after using the e-module. Based on the results of the research, it can be concluded that the chemistry learning e-module based  on Discovery Learning on the Atomic Structure material developed is very feasible, practical, and effective to be used in chemistry learning class X of SMA Negeri 13 Medan.
Development of Supplementary Teaching Materials Based on Local Wisdom of The Sungai Kakap Community on Material Form, Substance, and Its Changes Siti Mariyam; Hairida; Eni Mayasari
Hydrogen: Jurnal Kependidikan Kimia Vol. 14 No. 4 (2026): August 2026
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v14i4.21916

Abstract

Contextual learning is emphasized in the Independent Curriculum to help students connect scientific concepts with real-life situations. However, the integration of local wisdom into science learning materials at SMPN 1 Sungai Kakap remains limited, particularly for the topic of states of matter and their changes. This study aimed to develop supplementary science teaching materials based on the local wisdom of the Sungai Kakap community and to determine their feasibility and user responses. The study employed the ADDIE development model, limited to the analysis, design, and development stages. The participants consisted of six expert validators, including two material experts, two graphic experts, and two language experts; three science teachers; and 36 Grade VIII students. The students consisted of 12 students in a small-scale trial and 24 different students in a large-scale trial. Data were collected through interview guides, validation instruments, and teacher and student response questionnaires. The validation instruments used a four-point Likert scale, while the validity of the instruments was assessed using the Gregory coefficient. The feasibility of the developed teaching materials was evaluated based on material, graphical, and language aspects, while teacher and student responses were analyzed using percentage scores and interpreted according to predetermined criteria. The feasibility assessment resulted in percentages of 98.96% for the material aspect, 92.19% for the graphical aspect, and 98.33% for the language aspect, indicating a very feasible category. The teacher response was 92.59%, while the student responses were 91.25% in the small-scale trial and 95.21% in the large-scale trial, indicating very positive responses. These findings indicate that the developed supplementary science teaching materials based on Sungai Kakap local wisdom meet the predetermined feasibility criteria and received positive responses from teachers and students. Therefore, the materials are suitable for use as supplementary resources to support contextual science learning on states of matter and their changes.
Development of Chemistry Tetrahedron Mahaffy Based on Scratch Platform as Learning Media on Hydrocarbon Topics to Strengthen Systems Thinking Skills of High School Students Hafidz Fiqih Kurnia Putra; Rr. Lis Permana Sari
Hydrogen: Jurnal Kependidikan Kimia Vol. 14 No. 4 (2026): August 2026
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v14i4.21943

Abstract

This development study aimed to produce and test the feasibility of interactive learning media based on the scratch platform that integrates Mahaffy's Chemistry Tetrahedron approach (macroscopic, microscopic, symbolic, and humanistic) on hydrocarbon material for grade XI high school to strengthen students' systems thinking skills. Using the 4D Thiagarajan development model (define, design, develop, and disseminate), feasibility validation was carried out by chemistry material expert, learning media expert, and chemistry teachers (usability test), while the response test involved 32 grade XI high school students. The research instruments are validation questionnaires and responses with Likert scale 1-5. The results showed that the media obtained very good ratings from teachers and obtained good categories of student responses. The Media is stated to be very suitable for use in Chemistry learning and potentially optimally supports the strengthening of systems thinking through the integration of interactive and contextual chemical representations. The media was declared very suitable for use in chemistry learning and has optimal potential to support the strengthening of systems thinking through the integration of interactive and contextual chemical representations.
Kinetics and Mass Transfer of Methylene Blue Adsorption onto EDA/Cu2+-Functionalized Fly Ash Silica Xerogel Faiqa Haura Tsagifa; Edi Nasra; Hary Sanjaya; Sherly Kasuma Warda Ningsih; Muhammad Iqbal Saputra Gemasih
Hydrogen: Jurnal Kependidikan Kimia Vol. 14 No. 4 (2026): August 2026
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v14i4.21972

Abstract

Methylene blue (MB) contamination in water bodies necessitates efficient removal via adsorption using functional materials. In this study, fly ash-based silica xerogel modified with ethylenediamine and copper(II) (SX-EDA/Cu²⁺) was synthesized and evaluated for adsorption kinetics. FTIR spectroscopy indicated the presence of amine groups and Cu²⁺ coordination on the silica matrix. Batch adsorption experiments were conducted in triplicate (n = 3) at room temperature (25 ± 2 °C), pH 5.0, with 0.1 g adsorbent in 25 mL MB solution (1000 mg/L). The adsorption capacity increased rapidly, reaching a maximum qₜ of 234.55 ± 1.23 mg/g at 60 minutes, and stabilized at an equilibrium qₑ of 229.36 ± 1.17 mg/g by 90 minutes. Kinetic data were analyzed using five models (PFO, PSO, Elovich, Intra-Particle Diffusion, and Liquid Film Diffusion) with regression and error function evaluation (R², χ², RMSE). The pseudo-second-order model provided the best empirical fit (R² = 0.9972; qₑ,calc = 217.39 ± 5.80 mg/g), while film diffusion (R² = 0.9994) and intra-particle diffusion contributed jointly to mass transfer resistance. These results indicate that SX-EDA/Cu²⁺ exhibits rapid uptake and high adsorption capacity for MB, with adsorption kinetics governed by combined film and pore diffusion processes.

Page 74 of 74 | Total Record : 735

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