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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 618 Documents
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Development of G-Sites that Support Students' Self-Regulated Learning Using TGT Type of Cooperative Learning Rizqi, Abdur Rahman; Widarti, Hayuni Retno; Anantayani, Aisyah; Nisa, Afina Afidhotun; Amrullah, Nur Kholish; Aini, Rofinda Gita
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 3 (2025): June 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i3.15845

Abstract

Independence in learning can be built through self-regulated learning. The low of student self-regulated learning occurred in students of class X.1 State Senor High School (SMAN) 6 Malang. So far, research related to improving students' self-regulated learning has only focused on strategies without supporting learning media. Therefore, it is necessary to conduct a research and development study on instructional media that can enhance students' self-regulated learning. The purpose of this study is to develop a G-Sites-based learning media integrated with the TGT type of cooperative learning model to improve students' self-regulated learning. This study employs the ADDIE development model, which consists of the stages of analysis, design, development, implementation, and evaluation, carried out systematically. The sampling technique used in this study is purposive sampling, as the research is based on a problem related to low self-regulated learning identified in class X.1. The subjects of this research were students of class X.1, students of class XI as respondents of readability test, and chemistry teachers of SMAN 6 Malang as validators of material and media experts. Data analysis was carried out using a mixed-method approach, both qualitative and quantitative, employing descriptive and percentage analysis techniques. The developed product was declared valid and feasible to use with percentage results on the graphic design aspect of 83%; presentation and use of media 80%; suitability of material 97%; presentation of material 93%; language 88%; suitability of syntax 97%; and suitability of self-regulated learning 100%. The implementation of G-Sites is proven to increase students' self-regulated learning by 14.5%.
Cracking Culture: Exploration of Bugis Salted Eggs as a Chemistry Learning Resource Yusaerah, Nur; Imranah, Imranah; Elvira, Elvira
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 3 (2025): June 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i3.15929

Abstract

The traditional production of salted eggs in Soppeng Regency, South Sulawesi, reflects scientific principles relevant to chemistry education. This study explores this local practice through an ethnoscience perspective and assesses its potential as a contextual chemistry learning resource. A qualitative descriptive design with an ethnographic approach was used. Data were collected through observation, interviews, and documentation involving key informants (senior artisans), main informants (active producers), and supporting informants (community members). Data analysis applied source triangulation and inductive reasoning to ensure validity and allow themes to emerge. The findings reveal that the salted egg-making process incorporates various chemical concepts, including diffusion, osmosis, protein denaturation, physical and chemical changes, solution chemistry, and colligative properties. Artisans demonstrate empirical knowledge through consistent techniques, even without using formal scientific terms. The novelty of this study lies in its systematic integration of traditional salted egg production with core chemical concepts, positioning it as a culturally grounded and pedagogically valuable learning resource aligned with the Merdeka Curriculum. The practice embodies local values such as diligence, cooperation, and sustainability, making it suitable for character education and the Profil Pelajar Pancasila. Integrating this ethnoscientific knowledge into classroom instruction can help students grasp abstract chemistry concepts through real-life, culturally relevant contexts. Overall, this study supports the use of local wisdom as a means to enrich science education and preserve cultural heritage.
Differentiated Instruction Based on Learning Styles in Chemistry Classrooms: A Systematic Review of Models, Outcomes, and Implementation Challenges Hariyanto, Septian Ariq; Sulistyaningsih, Sulistyaningsih; Suprihatiningrum, Jamil
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 3 (2025): June 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i3.15933

Abstract

This systematic literature review explores the integration of learning-style-based differentiated instruction with active learning models, particularly Problem-Based Learning (PBL) and Project-Based Learning (PjBL), in secondary chemistry education. The purpose of the review is to identify, synthesize, and critically analyze how a differentiated learning approach based on learning styles can be effectively activated with active learning models such as PBL and PjBL in the context of secondary chemistry education. Drawing on eleven peer-reviewed studies published between 2015 and 2025, the review identifies how differentiation strategies, when aligned with students' visual, auditory, and kinesthetic preferences, can enhance conceptual understanding, motivation, and critical thinking. The review reveals consistent positive outcomes across various learning domains, with differentiation applied through content, process, and product adjustments. However, it also uncovers persistent implementation challenges, including limited teacher training, resource constraints, and lack of institutional support. The situation analysis finds these findings within the frameworks of constructivist pedagogy and responsive teaching, emphasizing the importance of adaptable, student-centered instruction in chemistry education. The study concludes by recommending stronger systemic support, longitudinal research, and professional development to ensure the sustainable application of differentiated instruction in diverse chemistry classrooms.
Scientific Skills Through Guided Inquiry: A Case Study of Briquette Production from Corncob and Coffee Grounds Widiastuti, Egita; Windayani, Neneng; Sukmawardani, Yulia; Rahmawati, Risa
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 3 (2025): June 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i3.15955

Abstract

This study aims to develop students' scientific performance with the help of guided inquiry-based learner worksheets (LKPD) in developing students' scientific skills in making briquettes from corncob waste and coffee grounds. The issue of low utilization of agricultural waste and lack of integration of real context in chemistry learning. The method used was pre-experimental with a One-Shot Case Study design, involving three groups of students in class XI Industrial Chemical Engineering. The assessment focused on the six stages of guided inquiry, namely observation, formulating problems, making hypotheses, conducting experiments, analyzing data, and drawing conclusions. The results showed that student activity reached 90.3 while scientific skills showed excellent results, with scores between 83-91.7. This is a novelty with the application of guided inquiry-based worksheets in a real context, namely the processing of organic waste into briquettes, which has not been widely explored in chemistry learning. This finding shows that applying LKPD in making corn stover and coffee grounds briquettes with a guided inquiry learning model is proven effective in developing students' scientific skills.
Literature Review: Alkaloid Compounds in Medicinal Plants: Mechanisms and Anti-Diabetic Potential Rahmadhani, Ade Novira; Rismawati, Lia; Nurramadhani, Aisyah Zahra; Syahputri, Salsabila Dia; Saputri, Rindiani Dwi; Usman, Usman
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 3 (2025): June 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i3.16012

Abstract

Alkaloids are a group of chemical compounds found in nature with the most basic nitrogen atoms. As many as 20% of plant species contain alkaloid compounds, one of which is flowering plants. Plants that contain alkaloid compounds have the potential to be antidiabetic agents. This literature review research uses the narrative literature review method. Using keywords from the range of 2014-2024, a total of 25 articles were obtained. Diabetes is a common metabolic disease caused by insulin deficiency. The plants that contain bioactive alkaloid compounds are Catharanthus roseus, Portulaca oleracea L. (PO), Momordica charantia (Bitter Melon), Uncaria Nervosa Elmer (Bajakah), Peperomia Pelucida (Water Pepper), Mulberry, Ageratum conyzoides L (Ageratum), Syzygium sp (Red Pakoba Fruit), Sansevieria trifasciata (Mother-in-law's Tongue), Triumfetta cordifolia, Phrynium Capitatum (Rice Leaf), and Annona Muricata L. (Soursop Leaf), which have been proven to contain alkaloid activity compounds that can be used as anti-diabetic agents. Alkaloid compounds play an essential role in diabetes management through various mechanisms that regulate blood glucose levels.
Formulation and Evaluation of Dishwashing Soap Based on Eichhornia crassipes Activated Carbon as an Environmentally Friendly Cleanser Nurrohimi, Erlin Dwi; Pramana, Arjuna; Idayanti, Rina; Husna, Marsha Azharia; Amelia, Lisa; Wirhanuddin, Wirhanuddin
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 3 (2025): June 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i3.16034

Abstract

Eichhornia crassipes is an invasive aquatic plant found in tropical and subtropical waters that has high cellulose, lignin, and hemicellulose content, making it a potential raw material for activated carbon. The use of activated carbon in dishwashing soap can enhance cleaning power by absorbing oil, odors, and microscopic dirt. This study aims to formulate and evaluate a liquid dishwashing soap product containing carbon from water hyacinth as a natural cleaning agent. The water hyacinth samples used were dried stems, collected from local water bodies, and prepared by drying under sunlight to reduce moisture content. The stems were then subjected to carbonation at 600 °C for 60 minutes to produce biochar, followed by a comminution process using ball milling to produce fine activated carbon powder. The resulting carbon was formulated into a dishwashing soap base at a ratio of 1 mg per 100 mL of product. Product evaluations were conducted based on Indonesian National Standards (SNI) and yielded the following results: a pH value of 9.78 (SNI 8–10.8), foam stability of 90% (SNI 60–100%), viscosity of 206.11 cP (SNI 400–4000 cP), free alkali content of 0.104% (SNI <0.14%), and specific gravity of 1.045 g/mL (SNI 1.01–1.1 g/mL). The novelty of this study lies in the utilization of activated carbon derived from Eichhornia crassipes, which is formulated into liquid dishwashing soap and comprehensively evaluated based on national quality standards (SNI). This approach has rarely been reported in similar studies. The results demonstrate the potential of water hyacinth as an alternative active ingredient in the development of sustainable household cleaning products.
Survey Study of Student Perceptions of Prospective Chemistry Teachers on the Development of Small-Scale Chemistry Practicums Mubarokah, Febriati Dian; Hana, Muhammad Nurul
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 3 (2025): June 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i3.16148

Abstract

The small-scale chemistry laboratory approach remains relatively unfamiliar and underutilized by chemistry teachers in Indonesia. This is largely due to the gap between theoretical understanding and the practical skills required to design laboratory activities that are not only environmentally friendly but also aligned with learning objectives. This study aims to examine the perceptions of pre-service chemistry teachers regarding the development of small-scale chemistry practicums and their impact on motivation to learn and implement them at school. The novelty of this research lies in the participatory involvement of pre-service teachers, who are engaged not only as participants but also as designers of the practicum procedures, thereby providing authentic experiences in their professional preparation as future teachers. Employing a qualitative approach with a survey method, the study involved 26 first-year students from the Chemistry Education Program enrolled in the School Chemistry Practicum course. Data were collected through questionnaires, students’ practicum reports, and classroom observations. The findings indicate that student perceptions of the development and implementation of small-scale chemistry practicum were generally in the "Agree" to "Strongly Agree" categories, suggesting positive reception and high potential for its application in school-based chemistry instruction. The highest-rated indicators were “Effectiveness and Efficiency of Small-Scale Chemistry Practicum” and “Students’ Teaching Motivation,” both with an average score of 4.35, reflecting that students perceive practical benefits in terms of time and material use, as well as increased motivation to adopt the approach in their future teaching practices.
Phytochemical Profile and Antioxidant Activity of Bandotan (Ageratum conyzoides L.) Leaves from East Kalimantan Hajar, Ayu Iradha Umi; Indah, Marwa; Miranda, Esti; Nuraini, Indah; Kusuma, Aldi; Erika, Farah
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 3 (2025): June 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i3.16179

Abstract

Ageratum conyzoides L. is a wild plant known to contain secondary metabolites with potential antioxidant activity, such as flavonoids and phenolics. However, the content and activity of active compounds in the leaves of A. conyzoides growing in the Berau region, East Kalimantan, have not been extensively studied. This study aims to evaluate the phytochemical content and antioxidant activity of ethanol extracts from A. conyzoides leaves collected from the Batu Putih area, Berau. The samples, in the form of fresh leaves, were dried and ground before being extracted using the maceration method with 96% ethanol as the solvent. The resulting extract was then subjected to phytochemical screening to identify groups of active compounds and tested for antioxidant activity using the DPPH (2,2-diphenyl-1-picrylhydrazyl) method, with absorbance measured at a wavelength of 420 nm. Phytochemical screening results indicated the presence of alkaloids, phenolics, and tannins, while flavonoids, terpenoids, and triterpenoids were not detected. The antioxidant assay showed that the extract exhibited strong activity, with an IC50 value of 61.89 ppm, although it was still higher than that of vitamin C, which had an IC50 value of 26.77 ppm. In conclusion, the ethanol extract of A. conyzoides leaves from Batu Putih has potential as a natural antioxidant source and is worthy of further development in the pharmaceutical field.
Toxicity and Antioxidant Activity Test of Rambutan Seeds (Nephelium lappaceum L.) Arum, Alvionita Puspa; Rahmadani, Agung; Rijai, Laode; Farah, Harra Ismi
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 3 (2025): June 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i3.16376

Abstract

Rambutan (Nephelium lappaceum L.) seeds have long been utilized in traditional medicine due to their potential therapeutic properties. This study aimed to determine the secondary metabolite profile, toxicity, and antioxidant activity of the methanolic extract and ethyl acetate fraction of rambutan seeds to strengthen their potential application in traditional medicine. The powdered of rambutan seed was extracted with a maceration technique using methanol, followed by fractionation using n-hexane and ethyl acetate. The methanol extract and ethyl acetate fraction were tested for toxicity using the Brine Shrimp Lethality Test (BSLT) and for antioxidant activity using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay. Phytochemical screening was performed using standard qualitative method to identify secondary metabolites, which confirmed the presence of phenols, tannins, and flavonoids in both samples. Toxicity testing indicated LCâ‚…â‚€ values of 688.86 ppm for the methanol extract and 825.68 ppm for the ethyl acetate fraction. Antioxidant activity assessment revealed ICâ‚…â‚€ values of 328.61 ppm for the methanol extract and the higher activity for ethyl acetate fraction of 32.78 ppm. These results indicate that the ethyl acetate fraction of rambutan seeds may serve as a promising natural source of antioxidants for therapeutic development.
Development of Socio-Scientific Issue-Based E-Modules on Addictive Substances to Enhance Students’ Chemical Literacy Lestari, Mia; Helsy, Imelda; Irwansyah, Ferli Septi; Sari, Sari; Dahriah, Iis; Hakim, Grace Martian
Hydrogen: Jurnal Kependidikan Kimia Vol. 13 No. 3 (2025): June 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/hjkk.v13i3.16419

Abstract

Chemical literacy is an essential competency that includes understanding chemical concepts, critical thinking skills, and scientific-based decision-making in dealing with relevant social issues. Based on this urgency, this study aims to develop an e-module based on Socioscientific Issues (SSI) on addictive substances as an effort to develop chemical literacy. This study uses the R&D method with the ADDIE (Analyze, Design, Development, Implement, and Evaluation) model up to the Development stage to develop an e-module based on sociosatific issues. The research sample includes two material experts, one media expert, and 15 Chemistry Education students of UIN Sunan Gunung Djati Bandung as respondents for the acceptability test. Data were collected using validation sheets and questionnaires, then analyzed descriptively to determine the validity and feasibility of the e-module. The validation results of two material experts and one media expert showed an average score of the material aspect of 0.90, language 0.89, and appearance 0.87 (very valid). The student feasibility test showed a score of the material aspect of 92.22%, language 89.33%, and appearance 88.22% (very feasible). This e-module is feasible to be used as an innovative and contextual learning media and the basis for further development of the implementation and evaluation stages. This study presents a novelty in the form of an interactive e-module based on socio-scientific issues (SSI) for addictive substances material in Android format (.apk). This e-module is relevant for digital learning and is designed to improve students' chemical literacy by linking chemical concepts to real problems and training critical thinking and science-based decision making.

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