Chemistry Education Practice (CEP) (ISSN Cetak 2654-8119 dan ISSN Online 2656-3940) mencakup semua aspek penelitian dan praktik pendidikan kimia. Jurnal ini menerbitkan makalah penelitian asli, komunikasi singkat, diseminasi, diskusi penelitian, pengalaman dan perspektif di berbagai aspek pendidikan kimia, pengembangan pengajaran, proyek dan inovasi pendidikan, metodologi pembelajaran dan teknologi baru dalam pembelajaran kimia. Jurnal Chemistry Education Practice diterbitkan dua kali dalam setahun, yaitu setiap bulan Mei dan November. CEP sudah terakreditas sinta 4 dengan nomor SK 225/E/KPT/2022 sejak bulan Desember tahun 2022 sampai bulan November tahun 2026.
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Development of Practicum Integrated Instrument Components (KIT) on Buffer Solution Material
This research is developing an integrated instrument component (KIT) practicum on buffer solution material. The study aimed to determine the feasibility level of the KIT developed and the students' response to the KIT. The development model is carried out by using the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). The research was conducted in May 2022 at SMA Negeri 5 Kota Mukomuko. The trial class selection was conducted through purposive sampling of all XI MIPA classes, with 12 students from the XI MIPA 2 class participating in small-scale trials and 30 students from the XI MIPA 1 class in large-scale trials. Data collection methods were carried out using written tests and student response questionnaires. The data obtained were analyzed using validation tests, response questionnaire analysis, and an examination of student learning outcomes. The results obtained (1) KIT practicum is very feasible to be used as a practicum media by students based on the results of validation tests on media and material aspects, (2) The response of students to the trial of the KIT practicum of buffer solution is included in the very interesting category shown in the acquisition of an average value of 86.6%.
Copyright (c) 2025 Mia Filandari, Wiwit Wiwit, Salastri Rohiat, Triana Krisandini http://creativecommons.org/licenses/by-sa/4.0
Optimization of Chemistry Learning Through the Development of Teaching Materials in the Form of E-Modules
This research aims to optimize chemistry learning by developing teaching materials in the form of E-Modules. The E-Module is an interactive multimedia teaching material that is available online, not in print. E-Modules integrate text, images, and videos to create an engaging and interactive digital learning experience for learners. The research method employed is R&D, utilizing the ADDIE model, which focuses on the analysis stage to identify the need for developing teaching materials. The data collection techniques used were interviews, questionnaires, and documentation. The results of the interviews indicate that teachers require an interactive E-Module to enhance students' understanding of chemical materials. The results of the questionnaire analysis of the need for an integrated RADEC-based E-Module with the SETS approach on green chemical materials, with an overall average of 71.05%, are included in the criteria needed. These results highlight the importance of innovative teaching materials based on an integrated learning approach model in meeting the needs for interactivity and multimedia, thereby encouraging student involvement in learning. This study concludes that the development of RADEC-based E-Modules integrated with the SETS Approach is needed to improve the quality of chemistry learning in schools.
Copyright (c) 2025 Nila Wati, Coryna Oktaviani http://creativecommons.org/licenses/by-sa/4.0
Development of Student Worksheets Based on the Discovery Learning Model on Reaction Rate Material
This study aims to develop a student worksheet based on the Discovery Learning model for the reaction rate topic and to determine its feasibility in terms of validity through expert validation. The development model used is the 4D model, which consists of four stages: define, design, develop, and disseminate. However, this research is limited to the development stage, focusing on the feasibility testing of the student worksheet. The trial was conducted with 40 students at SMAN 2 Mataram. The research instruments included interview sheets and validation sheets for student worksheets. The data collected comprised both quantitative data, in the form of scores from expert validators using the validation sheets, and qualitative data, in the form of suggestions and feedback from validators. The validation sheets used a Likert scale. The validation results showed a score of 89.63% for the content/material aspect, 95.56% for presentation, 90.00% for language, and 91.63% for graphic feasibility. The overall average score for all aspects of the LKPD was 91.63%, with a reliability score of 94.00%, indicating that the student worksheet is highly feasible and suitable for use in the learning process.
Copyright (c) 2025 Ni Luh Gaoura Astari Valentina, Syarifa Wahidah Al Idrus, Eka Junaidi http://creativecommons.org/licenses/by-sa/4.0
The Influence of the Project-based Learning (PjBL) Model on Self-Efficacy and Creative Thinking Skills of Grade XI Students on the Buffer Solution Topic at SMAN 1 Mauponggo
Problem-solving in chemistry requires support from various aspects, including psychological aspects such as self-efficacy and cognitive aspects such as creative thinking skills. This study aims to determine the effect of the Project-based Learning (PjBL) model on the self-efficacy and creative thinking skills of Grade XI students on the topic of buffer solutions at SMAN 1 Mauponggo. The research design used was a nonequivalent control group design, with purposive sampling as the sampling method, where participants were selected based on specific goals or criteria relevant to the research topic. The independent variable in this study was the Project-Based Learning (PjBL) model. Self-efficacy data were collected using a self-efficacy questionnaire. In contrast, creative thinking skills data were obtained through a test developed based on indicators of creative thinking skills (fluency, flexibility, originality, elaboration). Hypothesis testing was conducted using MANOVA. The results showed that both students' self-efficacy and creative thinking skills had an F-value of 15.198, which exceeded the F-table value of 4.05 at a significance level of 0.05. Based on these results, it can be concluded that the PjBL model has a significant effect on students’ self-efficacy and creative thinking skills.
Copyright (c) 2025 Anita Dhija Baiyo, Muti’ah Muti’ah, Sunniarti Ariani http://creativecommons.org/licenses/by-sa/4.0
Development of Project-Based Learning (PjBL) Student Worksheets Integrated with Green Chemistry on the Fundamental Laws of Chemistry
This research aims to determine the feasibility of using a project-based learning (PjBL) students’ worksheet (LKPD) containing green chemistry about fundamental laws of chemistry, based on the development results in terms of validity and practicality. The green chemistry principles studied in this research are limited to Green Chemistry Principle number 1, namely the Preventive Principle. This type of research is included in research and development (R&D) using the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) development model. The development of LKPD was declared feasible in terms of two aspects, namely validity and practicality, with a percentage result of 61% or higher. The results of the LKPD feasibility test, focusing on the validity aspect, were evaluated by three validators and yielded an average percentage of 81%, meeting very valid criteria. The practicality of the LKPD was seen from activity observations and student response questionnaires, which obtained practical results with an average percentage of 79.3%. Based on these results, the Project-Based Learning (PBL) LKPD, which incorporates green chemistry into the fundamental law, is suitable for use
Copyright (c) 2025 Ria Zulfa, Muntari Muntari, Yunita Arian Sani Anwar http://creativecommons.org/licenses/by-sa/4.0
Development of PjBL-STEM-Based E-Worksheet on the Topic of Acids and Bases
This study aims to develop an e-LKPD based on Project-Based Learning (PBL) integrated with the STEM (Science, Technology, Engineering, and Mathematics) approach for acid-base materials, and to determine the level of validity and practicality. This study uses an R&D development method (Research and Development) 4D model (Define, Design, Develop, and Disseminate). The characteristics of the e-LKPD developed are aimed at catering to students' learning interests, with four key features: contextual, simple projects, gamification, and audio-visual elements. The subjects of the study consisted of 32 students of class XI Phase F at SMAN 6 Mataram. Validity analysis was conducted using the Aiken index (V), which yielded a value of 0.92, indicating that the e-LKPD developed was classified as highly valid. The level of practicality was measured through teacher and student responses of e-LKPD, with a percentage result of 92.95%, which was in the very practical category. Thus, the results of this study indicate that the e-LKPD PjBL-STEM developed has met the criteria of high validity and practicality, making it suitable for use in schools to learn about acid-base materials.
Copyright (c) 2025 Nyoman Dayuni, Yunita Arian Sani Anwar, Eka Junaidi http://creativecommons.org/licenses/by-sa/4.0
The Effect of Stem-Based PjBL Model on Students' Creative Thinking Abilities on Acids and Bases Materials
Penelitian ini adalah kuasi eksperimen semu dengan tujuan mengetahui adanya pengaruh model PjBL (Project Based Learning) berbasis STEM (Sains, Technology, Engineering and Mathematics) terhadap peningkatan berpikir kreatif siswa kelas XI IPA di SMAN 1 Narmada pada materi asam dan basa. Desain penelitian yang digunakan yaitu non-equivalent control group design. Sampel pada penelitian ditentukan dengan metode purposive sampling. Populasi yang dipilih adalah semua siswa kelas XI IPA SMAN 1 Narmada yang berjumlah 213 siswa, sedangkan sampelnya diperoleh siswa kelas XI IPA 5 sebagai kelompok eksperimen dan siswa kelas XI IPA 4 sebagai kelompok kontrol. Instrumen pada penelitian ini yaitu instrumen tes berupa soal uraian yang terdiri dari 8 soal. Analisis data dilakukan dengan menggunakan beberapa uji, anatra lain uji N-Gain, uji normalitas, uji homogenitas varians dan uji hipotesis (uji-t) dua pihak menggunakan rumus uji-t polled varians. Berdasrkan hasil uji-t diperoleh thitung sebesar 4,06 dan ttabel sebesar 1,99 pada dk sebesar 69 dengan taraf signifikan 5%. Karena thitung lebih besar dari ttabel maka Ho ditolak dan Ha diterima yang artinya model PjBL (Project Based Learning) berbasis STEM (Sains Technology Engineering and Mathematics) berpengaruh terhadap peningkatan kemampuan berpikir kreatif siswa kelas XI IPA di SMAN 1 Narmada pada materi asam dan basa.
Copyright (c) 2025 Febriana Febriana, Lalu Rudyat Telly Savalas, Aliefman Hakim http://creativecommons.org/licenses/by-sa/4.0
Needs Analysis for the Development of the CHEM-RILW (Chemistry Real Integrated Laboratory Work) Learning Model in Chemistry Education
This study aims to analyze the need for further development of the CHEM-RILW model, an extension of the previously developed ILW model. The respondents involved in this study included two lecturers (N = 2) and forty-seven chemistry students (N = 47). Data was collected using observation sheets, questionnaires, critical thinking tests, and rubrics for argumentation and communication skills. The results indicated that the implementation of the learning process successfully integrated investigative activities carried out in the laboratory. This integration demonstrated that the pre-laboratory, laboratory, and post-laboratory stages were effectively implemented. However, the previous model did not sufficiently enhance students' interpretation and presentation skills. Additionally, the human element was not adequately emphasized, which limited the development of students' argumentation skills. Analysis of the lecturer questionnaire revealed a need to improve the learning model by incorporating more real-world applications of theory. Based on these findings, it is clear that further development of the ILW model is necessary. The CHEM-RILW model, as an enhancement, introduces real-world aspects and emphasizes the human element in learning, highlighting the relevance of community science in the context of chemistry concepts.
Copyright (c) 2025 Eka Junaidi, Yunita Arian Sani Anwar , Muti'ah Muti'ah, Syarifa Wahdia Al Idrus, Ermia Hidayanti http://creativecommons.org/licenses/by-sa/4.0
The Effect of the Problem-Based Learning Model on Student Learning Outcomes of Grade XI on Reaction Rate Material
This research aims to determine the effect of the problem-based learning model on the learning outcomes of reaction rate material in class XI students at SMAN 1 Lingsar. The type of research employed is a quasi-experiment, specifically a non-equivalent control group design. The population in this study consisted of all the students in class XI MIPA at SMAN 1 Lingsar, totaling 143 students divided into 4 classes. The sampling technique used is purposive sampling. The samples in this study were class XI MIPA 2 as the experimental class and XI MIPA 3 as the control class. The experimental class employs a problem-based learning model, while the control class utilizes a conventional learning model. The student learning outcomes were focused on the reaction rate material in the cognitive domain. The data analysis test used in this study is the t-test Gain. The gain in the experimental class (0.47) was greater than the gain in the control class (0.28). The analysis results showed that tcount (3.45) > ttable (2.03) at the 5% significance level, indicating a positive and significant effect of the problem-based learning model on the learning outcomes of reaction rate material for class XI students at SMAN 1 Lingsar.
Copyright (c) 2025 Nur Arafah, I Nyoman Loka, Dodiy Firmansyah http://creativecommons.org/licenses/by-sa/4.0
Analysis of The Effectiveness of the Use of Chemical Laboratories in State High Schools in East Lombok Regency
This study aims to determine the effectiveness of using chemical laboratory functions and tools in Public Senior High Schools throughout East Lombok Regency. The approach in this study uses a descriptive quantitative approach. The population of this study consisted of all high schools in East Lombok Regency. The sample for this study comprised six schools: SMAN 2 Selong, SMAN 3 Selong, SMAN 1 Terara, SMAN 1 Pringgabaya, SMAN 1 Sembalun, and SMAN 1 Labuhan Haji, which were selected using purposive sampling. Data collection used questionnaires and interviews; the questionnaire used was closed with a Likert scale. For the interpretation of problem data using the criteria of 5 categories (not effective, less effective, moderately effective, effective, very effective) which are determined by simple percentages and tables. Based on data analysis it is known that; 1) the effectiveness of the use of chemical laboratory functions in State Senior High Schools throughout East Lombok Regency has been effective (74.82%). 2) The effectiveness of the use of chemical laboratory equipment in State Senior High Schools throughout the East Lombok Regency has been effective (80.33%).
Copyright (c) 2025 Spir Senyum Rekasawiji, Saprizal Hadisaputra, Eka Junaidi http://creativecommons.org/licenses/by-sa/4.0
Development of Augmented Reality-Based Chemistry Learning Media on Carbon Compound Material
This study aims to determine the feasibility and practicality of interactive learning media based on augmented reality for carbon compounds. This research is a type of development research that adopts the 4D model (define, design, develop, disseminate) but is limited only to the development stage (develop). The population in this study consisted of 124 students from SMAN 1 Labuhan Haji. The sampling technique used in this study was random sampling. The assessment aspects evaluated by three validators have three aspects measured through expert validation sheets. The level of practicality of the media was measured through a practicality questionnaire sheet completed by 24 students of Class XI MIPA at SMAN 1 Labuhan Haji. The results showed that the level of media feasibility, as assessed by the validator, was 0.68, indicating that the developed media had a high level of validity. The results of the media practicality test showed that students gave positive responses to all media components, with a practicality percentage of 87.5%. Based on these results, it can be concluded that the media developed is feasible and practical to use.
Copyright (c) 2025 Samsul Sahidi, Jeckson Siahaan, Supriadi http://creativecommons.org/licenses/by-sa/4.0
Pengembangan LKPD Berbasis Inkuiri Terbimbing dan Instrumen Berpikir Kritis pada Pelajaran Kimia Materi Asam Basa
This research aims to develop guided inquiry-based LKPD and critical thinking instruments in acid-base chemistry lessons that are valid and practical. The research uses the R&D (Research and Development) method, a 4D development model which is carried out in only three stages (3D), namely Define, Design, and Develop. The results of the validity test using the Aiken's V index obtained a V value for the LKPD of 0.81 and for the instrument of 0.82, which shows that the LKPD based on guided inquiry and critical thinking instruments on acid-base material are very valid to use. The results of the practicality assessment of the LKPD and instruments showed that the average percentage of the LKPD was 88% and the instrument was 81%, which means that the LKPD based on guided inquiry and critical thinking instruments on acid-base material were very practical to use.Based on these data, it can be concluded that the guided inquiry-based LKPD and critical thinking instruments developed can be used in chemistry learning on acid-base material.
Copyright (c) 2025 Kintan Haiatul Maktun, Mukhtar Haris, Jeckson Siahaan http://creativecommons.org/licenses/by-sa/4.0
Analisis Pelaksanaan Praktikum dan Pengelolaan Laboratorium Kimia MA Negeri Se-Lombok Timur Tahun Ajaran 2023/2024
Penelitian ini bertujuan untuk menganalisis kondisi dan pengelolaan laboratorium kimia serta pelaksanaan praktikum kimia di SMA Negeri MA di Lombok Timur tahun ajaran 2023/2024. Metode penelitian yang digunakan adalah deskriptif kuantitatif dengan pengumpulan data melalui angket dan wawancara yang melibatkan guru kimia, kepala laboratorium, asisten laboratorium, dan siswa. Data penelitian dianalisis menggunakan teknik deskriptif kuantitatif dalam bentuk persentase. Interpretasi data menggunakan 5 kriteria (sangat baik, baik, cukup, kurang, sangat kurang). Hasil penelitian menunjukkan bahwa pelaksanaan praktikum kimia di MAN 1 Lombok Timur dan MAN 2 Lombok Timur berada pada kategori “Sangat Baik”, sedangkan di MAN IC Lombok Timur berada pada kategori “Baik”. Pengelolaan laboratorium di ketiga sekolah tersebut berada pada kategori “Sangat Baik” dengan total nilai rata-rata sebesar 92,42%. Namun, kelengkapan laboratorium di MAN IC masih kurang memadai dan berada pada kategori “Cukup”. Hasil wawancara menunjukkan bahwa kendala utama dalam pengelolaan laboratorium antara lain keterbatasan peralatan dan sumber daya manusia, khususnya asisten laboratorium. Meskipun terdapat beberapa kendala, namun pelaksanaan praktikum dan manajemen laboratorium di SMA MA Negeri Lombok Timur secara umum sudah berjalan dengan baik.
Copyright (c) 2025 Melziana Apri Nesti, Mukhtar Haris, Lalu Rudyat Telly Savalas http://creativecommons.org/licenses/by-sa/4.0
Pengembangan Majalah Kimia Dengan Konten Interpretasi Spektra FTIR Dari Ekstrak Kasar Daun Renggak (Amomum dealbatum Roxb.)
Penelitian ini bertujuan untuk mengetahui interpretasi spektra FTIR dari ekstrak daun renggak sebagai bahan bacaan mahasiswa dalam bentuk Chemistry Magazine,dan untuk mengetahui kelayakan majalah kimia tersebut dilakukan uji validasi ahli dan uji respon mahasiswa terhadap majalah kimia dengan konten interpretasi spektra FTIR dari ekstrak kasar daun renggak. Model penelitian dan pengembangan yang digunakan dalam penelitian ini adalah model 4D yang terdiri dari empat tahap, yaitu pendefinisian (define), perancangan (design), pengembangan (develop), dan penyebaran (disseminate). Validasi majalah dilakukan oleh tiga dosen Pendidikan Kimia, selanjutnya dilakukan uji respon mahasiswa kepada 58 mahasiswa Pendidikan Kimia, Universitas Mataram. Pada penelitian, didapati majalah kimia yang dikembangkan memiliki tingkat validitas yang diperoleh menggunakan rumus Aiken’s V adalah 0,87 dengan kategori sangat valid dan memiliki tingkat kelayakan sebesar 90,36% dengan kategori sangat layak. Sehingga dapat disimpulkan majalah kimia dapat digunkan sebagai suplemen bacaan kimia.
Copyright (c) 2025 Rahmawati Rahmawati, Haida Joharlin, Syarifa Wahidah Al Idrus http://creativecommons.org/licenses/by-sa/4.0
The Effect Of The Cinqase Learning Model On Critical Thinking Abilities And Understanding of Acid-Base Titration Concepts
This study aims to reveal the effect of the CINQASE learning model on critical thinking skills and students' conceptual understanding of acid-base titration material at SMAN 6 Mataram. This study is a quantitative study with a quasi-experimental method. The population in this study were students of Phase F Class XI SMAN 6 Mataram. The research sample was taken using the cluster random sampling technique and obtained students of class XI 4 as the control class and students of class XI 3 as the experimental class. The research instrument in measuring critical thinking skills and conceptual understanding was in the form of 5 test questions that had been tested for validity and reliability. The results of the N-Gain values ​​obtained from the experimental class and the control class were analyzed by testing the normality of the N-Gain and homogeneity of the N-Gain first and then testing the hypothesis. Hypothesis testing was carried out using the t-test. The results showed that there was an effect of the CINQASE learning model on students' critical thinking skills and conceptual understanding of acid-base titration material with a significance value of t count > t table. Student responses to the CINQASE model also showed positive results. In conclusion, the CINQASE learning model is effectively applied in chemistry learning to improve critical thinking skills and conceptual understanding.
Copyright (c) 2025 Ida Ayu Ketut Purnama Dewi, Jeckson Siahaan, Muntari Muntari http://creativecommons.org/licenses/by-sa/4.0
Validation Of Instrument to Measure Gen-Z Pre-Service Teacher Chemistry Virtual Lab Acceptance and Use
This study aims to validate the instrument to measure Gen-Z Pre-service Science Teacher Virtual Lab Acceptance and Use using Rasch model. This study is quantitative survey design with 83 participants from science education major in a new public university in Sulawesi. Instrument of the study is adopted which developed based on the Unified Theory of Acceptance and Use of Technology 2 and the Theory of Planned Behavior. Students are requested to fill up the questionnaire after experimenting basic chemistry courses using pHET virtual laboratory. The instrument has satisfactory reliability (person reliability 0.95, item reliability 0.78 and Cronbach alpha 0.98), separation (person separation 4.32 and item separation 1.68). All item are accepted based on the suitability of item fit statistics by referring to mean square, Z tolerated standard, and point measure correlation. Based on its unidimensionality, the instrument can explained 57.7% variance from item variance 22.7% and person variance 30%. Based on the findings that the instrument is valid and reliable to measure science teacher virtual lab acceptance and use. The findings suggest that validated instruments for measuring virtual lab acceptance can guide educators and policymakers in effectively integrating technology into science teacher training programs, ultimately enhancing educational practices and outcomes.
Copyright (c) 2025 Jumriani Jumriani, Hilman Qudratuddarsi, Nur Rahmah; Dyah Puspitasari Ningthias, Nor Indriyanti http://creativecommons.org/licenses/by-sa/4.0
The Influence Of The Discovery Learning Model On Students’ Learning Outcomes And Learning Motivation In Chemistry
The discovery learning model is a discovery-based learning model that is needed to improve learning outcomes and student learning motivation, especially in chemistry subjects which are synonymous with calculating theories, concepts, laws and facts. This research aims to describe the influence of the Discovery Learning learning model on learning outcomes and chemistry learning motivation for class XI students at SMAN 6 Mataram. This research is quantitative research with a quasi-experimental method (Quasi Experimental Design). The results of the research show that there is an influence of the Discovery Learning learning model on student learning outcomes in chemistry subjects. This can be seen from the results of hypothesis testing with the t-test at a significance level of 5%. The calculated significance was lower than 0.05, namely 0.008 < 0.05. In learning motivation, there is also an influence of the Discovery Learning learning model on students' learning motivation in chemistry subjects, which can be seen from the results of hypothesis testing with a t-test with a significance level of 5%. The calculated significance was lower than 0.05, namely 0.01 < 0.05.
Copyright (c) 2025 Endang Sulandri, Burhanuddin Burhanuddin, Syarifa Wahidah Al Idrus http://creativecommons.org/licenses/by-sa/4.0
Pengembangan Media Pembelajaran Kartu Truth and Dare untuk Meningkatkan Hasil Belajar Siswa Kelas XI IPA SMAN 1 SAPE
Research on the development of truth and dare card learning media aims to determine its validity, practicality and effectiveness so that it can improve the learning outcomes of class XI Science students at SMAN 1 Sape. The type of research used is development research (R&D) with the 4D development model (define, design, develop, disseminate) by Thiagarajan (1974). The research sample was 33 students from class XI IPA 6. The research instruments used were expert validation sheets, student and teacher response questionnaire sheets, and pretest-posttest question sheets. The results of the media expert validation test showed an average gain of 93% in the very valid category and the material expert validation test was 94% in the very valid category. The practicality test results were obtained from student and teacher response questionnaires with the same percentage, namely 88%. The results of the effectiveness test were obtained from the students' pretest-posttest results with an N-Gain value of 0.51 which was included in the moderate improvement category. This data shows that the truth and dare card media is suitable for use as a learning medium for thermochemical material for class XI IPA students at SMAN 1 Sape.
Copyright (c) 2025 Nuryanti Nuryanti, Burhanuddin Burhanuddin, Supriadi Supriadi http://creativecommons.org/licenses/by-sa/4.0
Effectiveness of Problem Based Learning Model on Student Learning Outcomes of Grade XI on Reaction Rate Material
Research has been conducted on the effectiveness of Problem Based Learning model on the learning outcomes of Class XI students of SMAN 3 Sampolawa on reaction rate material. This study aims to determine the effectiveness of Problem Based Learning model on student learning outcomes on reaction rate material. The subjects in this study were 25 students of class XI MIPA 1. This type of research is pre-experiment with One Group Pretest-Posttest design. The research instruments included a learning outcome test consisting of 20 multiple choice questions and an observation sheet. The results showed that the average pretest score of 29.6 increased to 77.2 in the posttest. The effectiveness of learning based on the N-Gain value of 0.68 is included in the medium category, so the Problem Based Learning model is declared effective in improving student learning outcomes. Students' responses to the learning model were classified as very good, while the implementation of learning by teachers and students was considered good and experienced an increase. Keywords: Effectiveness, Problem Based Learning, Learning Outcomes, Reaction Rate
Copyright (c) 2025 Desti Desti, Esnawi Esnawi, Maysara Maysara http://creativecommons.org/licenses/by-sa/4.0
Development of E-Student Worksheets Integrating Microscale Lab using Mamaq Culture on Acid-Base Material Class Xi
This research aims to develop chemistry learning media by integrating a small-scale laboratory (microscale lab) using the mamaq culture approach to improve students' conceptual understanding of acid-base material. This research is a development research with a 4D model design (Define, Design, Develop, Disseminate). The media developed is a Student Worksheet in electronic form (E-LKPD) which is uploaded to the website, making it easy to access and allowing the addition of images and learning videos related to acid-base material by associating it with mamaq culture. In addition, this E-LKPD also contains quizzes, sample questions, and evaluations to measure students' understanding of the material studied. This LKPD was developed using an experimental approach, integrated with a small-scale laboratory that allows practicum outside the lab with smaller tools and materials without reducing the essence of the practicum. This medium has been validated by two validators using a validation questionnaire, and the data was analyzed with an average formula, resulting in a score of 3.32 in the very valid category. Furthermore, a trial was carried out to assess the practicality of this media, by collecting responses from teachers and students. The results of the practical test showed a score of 91% from teachers and 85% from students, both in the very valid category.
Copyright (c) 2025 Riza Mahendra, Eka Junaidi, Yunita Arian Sani Anwar http://creativecommons.org/licenses/by-sa/4.0
Development of Reels-Based Learning Media and Instagram Stories on Electrolyte and Non-Electrolyte Solution Subject Matter
A study has been conducted on the development of learning media based on reels and instagram stories on the main material of Electrolyte and Non-Electrolyte Solutions. The purpose of this study. 1). To determine the feasibility of the Instagram application as a learning media on the material of Electrolyte and Non-Electrolyte Solutions at SMA Negeri 1 Wawotobi. 2). To determine student responses to the Instagram application that has been developed as a learning media on the material of Electrolyte and Non-Electrolyte Solutions at SMA Negeri 1 Wawotobi. This type of research is Research & Development (R&D) using the ADDIE development model. The instruments used are assessment/validation sheets (materials and media), teacher responses and student responses. The research sample was 15 grade XI students. The results of this study indicate that: (1) Learning Media Based on Reels and Instagram Stories have gone through the expert validation test stage with an average overall score of 87.74% (2) The student response questionnaire received a positive response with a percentage of 82.77%. From the results of this study, it can be concluded that the Instagram application that has been developed as a learning media that has been developed has very good feasibility and high practicality so that it can be used as a support in chemistry learning activities on the material of Electrolyte and Non-Electrolyte Solutions.
Copyright (c) 2025 Wadina Wadina, Maysara Maysara, Muh. Alim Marhadi http://creativecommons.org/licenses/by-sa/4.0
Analisis Instrumen Spektra FTIR Dan GC-MS Senyawa Kalkon Hasil Sintesis dari Vanilin dalam Majalah Kimia: Suplemen Perkuliahan Kimia Organik Lanjut
This study aims to analyze chalcone compound instruments and develop a chemistry magazine as supplementary reading material for students. The research adopts the 4D development model, which consists of four stages: define, design, develop, and disseminate. The magazine was validated by three lecturers from the Chemistry Education and FMIPA study programs, while student response testing was conducted on 47 Chemistry Education students at the University of Mataram. The validation results using Aiken’s V index indicate a score of 0.83, categorized as highly valid. Additionally, the magazine's feasibility level reached 90.03%, classified as highly practical. Therefore, this chemistry magazine is suitable as supplementary reading material in chemistry learning.
Copyright (c) 2025 Dini Sudianti , Rahmawati, Syarifa Wahidah Al Idrus http://creativecommons.org/licenses/by-sa/4.0
Pengembangan Media Pembelajaran Kimia Berbasis Web pada Materi Sistem Periodik Unsur
The purpose of this study was to determine the development process, validity, and practicality of web-based chemistry learning media on the Periodic System of Elements. The type of research used is research and development (R&D) with the ADDIE development model. This ADDIE development research model consists of 5 stages, namely analysis, design, development, implementation and evaluation. Students of class XI IPA SMAN 3 MATARAM, consisting of six classes, became the population of this study. Cluster random sampling was the sampling method in this study. Cluster random sampling is sampling at the cluster/group level randomly and class XI IPA 3 was chosen as the research sample. The validity test results of the average V value of 0.77 and the average reliability level of R = 85% show that the learning media is valid and reliable. Meanwhile, student responses in the practicality test showed a positive response with an average practicality of 82.06%, so that the learning media developed was classified as very practical. Based on the results of the analysis, the learning media products developed are valid and practical to use in the teaching process.
Copyright (c) 2025 Mirna Suryani,Burhanuddin,Baiq Fara Dwirani Sofia http://creativecommons.org/licenses/by-sa/4.0
Perbandingan Kadar Metabolit Sekunder Ekstrak Daun Sirih Cina (Peperomia Pellucida L. Kunth) Berdasarkan Faktor Intesitas Cahaya untuk Mendukung Perkuliahan Kimia Bahan Alam
This study aims to determine differences in levels of secondary metabolites of Chinese betel leaf extract which are affected by differences in light intensity and to determine the development of media posters as a means of supporting lectures on natural product chemistry. This research uses qualitative and quantitative methods of experiment and development. Based on the research results, Chinese betel leaf extract in sample 1 produced three secondary metabolites as well as sample 2. However, only two compounds could be compared between the two samples and these compounds were 3a(1H)-Azulenol, 2,3,4, 5,8,8a-hexahydro-6 and Dillapiole, while the compounds that cannot be compared are Cholest-5-en-3-ol(3 beta)-(CAS)lanol and Phenol,2,4-bis(1,1 -dimethylethyl)-(CAS) 2,4-Di-tert-butylphenol. The resulting level of the compound 3a(1H)-Azulenol,2,3,4,5,8,8a-hexahydro-6 (terpenoid) in sample 1 was 11.49% while in sample 2 it was 24.36%, and for the compound dillapiole (phenylpropanoid) content produced in sample 1 was 14.26% while in sample 2 it was 36.47%. For the compound cholest-5-en-3-ol (steroid) it produced a concentration of 74.25% in sample 1 while in sample 2 it was compound not detected and for the compound Phenol,2,4-bis(1,1-dimethylethyl)-(CAS ) 2,4-Di-tert-butylphenol (flavonoid) in sample 2 produced a level of 5.78% while in sample 1 it was compound not detected. Based on this, there were differences in the levels of secondary metabolites which were affected by light intensity. In developing poster media, stating that poster media is very feasible and practical to display so that poster media is not revised, this is based on the results of validity tests and trials.
Copyright (c) 2025 Aprilia Maharani; Aliefman Hakim; Rahmawati http://creativecommons.org/licenses/by-sa/4.0
Analisis Kesiapan Guru IPA/Kimia Terhadap Penerapan Pembelajaran STEM (Science Technology, Engineering, Mathematics) di SMA/SMK/MA Negeri Se Kecamatan Gerung
This study aims to describe the readiness of science/chemistry teachers for the application of STEM learning (Science, Technology, Engineering, Mathematics) and to describe the supporting and inhibiting factors of science/chemistry teacher readiness for the application of STEM learning. This research is a descriptive research with a quantitative approach. The population of this study is the number of science/chemistry teachers who teach at SMA/SMK/MA Country in District Gerung. The sampling technique in this study used purposive sampling. The number of samples was 12 science/chemistry teachers in SMA/SMK/MA Country in District Gerung. Data collection techniques using interview guidelines and questionnaire techniques which have been declared valid and reliable. The results of the research on attitude readiness, emotional readiness, cognitive readiness and behavioral readiness in public SMA/SMK/MA Country in District showed an average gain of 74.04%. This means that the readiness of science/chemistry teachers towards the application of STEM learning is more likely to be ready. Based on this, it can be interpreted that some teachers have implemented STEM learning and have never implemented STEM learning, only to the extent that they are ready to do STEM learning. This readiness is also influenced by supporting factors such as: responsibility, enthusiasm, willingness to adapt, critical thinking, thinking contextually, aware of one's own worth and will, being able to integrate various scientific disciplines, carrying out partnership functions and being good at managing time. While the inhibiting factors are independence and awareness of strengths and weaknesses, this is because some teachers have never participated in STEM learning training and teachers have never tried to apply STEM education in science/chemistry learning. Furthermore, teachers find it difficult to improve their quality in preparation for implementing STEM learning and teachers are not yet proficient in preparing lesson plans that are appropriate to STEM learning.
Copyright (c) 2025 Elok Faiqotuzzahrok; Syarifa Wahidah Al Idrus, Eka Junaidi, Saprizal Hadisaputra http://creativecommons.org/licenses/by-sa/4.0
Pengembangan E-Modul Praktikum Kimia Berbasis Green Chemistry pada Materi Laju Reaksi
The current researchnis airesearchiandidevelopmentistudyithat aimsitoidetermine the validity, practicality andieffectivity of chemistry practicum e-module based of green chemistry onireactionirate topic that was developed. This research used 4D research and developments model (define, design, develop and disseminate). The sample in this research was 24 students class XI MIPA at SMAN 1 Gerung. The result showed that validity obtained using the Aiken’s V = 0,9 showed that the chemistry practicum e-module based of green chemistry on reaction rate topic is very valid. Practicality seen through the student response questionnaire as a user. Obtained an average practicality value of 91% showed that the chemistry practicum e-module based of green chemistry on reaction rate topic is very practical. While for the effectivity based on N-Gain score obtained an average of 0,71, it showed that the chemistry practicum e-module based of green chemistry on reaction rate topic is very effective in improving students learning outcomes on reaction rate topic.
Copyright (c) 2025 Erza Sayyidatuzzahrah, Baiq Fara Dwirani Sofia; Jackson siahaan, Burhanuddin http://creativecommons.org/licenses/by-sa/4.0
Pengaruh Metode Pembelajaran Brainstorming Terhadap Kemampuan Berpikir Kreatif Kimia Peserta Didik Kelas Xi SMA Negeri 3 Mataram Tahun Ajaran 2022/2023
This study aims to determine the influence of brainstorming learning methods on the ability to think creatively in chemistry of grade XI science students. The type of research used is Quasi Experiment with a nonequivalent control group pretest-posttest design. The population of this study is all students of grade XI science for the 2022/2023 school year, totaling 158 students distributed in five classes. The sample used in this study was 60 students who were determined by cluster random sampling technique. Through random, class XI Science 4 was determined as a control class and in learning using conventional learning methods, namely lectures and discussions, and class XI Science 3 as an experimental class using brainstorming learning methods. Data on creative thinking skills were collected by test techniques using instruments in the form of description questions. The research hypothesis was tested using an independent t-test to analyze the difference between the n-gain of the control class and the experimental class using the help of SPSS 25 software. An independent t-hypothesis test yields a sig. (1-tailed) of 0.000 is less than the significance value (0.05). In the N-Gain test, experimental class N-Gain 0.6353 was obtained which was greater than that of control class 0.4255. Based on the t test and N-gain comparison, there is a positive and significant influence of brainstorming learning methods on students' creative thinking skills.
Copyright (c) 2025 Rani Hanani Rani Hanani; I Nyoman Loka, Aliefman Hakim http://creativecommons.org/licenses/by-sa/4.0
Efektivitas STEM Terhadap Pemahaman Konsep Kimia Siswa Ditinjau dari Perbedaan Gender
This study aims to determine the effectiveness of a lesson using the STEM (Science, Technology, Engineering and Mathematics) approach to students' understanding of chemistry concepts in terms of gender differences. The research method uses a quasi-experimental design by conducting pretest and posttest during learning. Sampling using purposive sampling technique. The sample in this study were 71 students of class XI MIPA 3 and XI MIPA 4 at Terara 1 Public High School, consisting of 36 students in class XI MIPA 3 as the experimental class and 35 students in class XI MIPA 4 as the control class. The data collection technique for this study used multiple choice questions and a questionnaire that had gone through validation tests and reliability tests to get students' understanding of chemistry concepts. The hypothesis test shows moderate criteria and the effect size test obtains a value of 0.3 with moderate criteria. Therefore, it can be concluded that the STEM approach affects students' understanding of concepts and gender does not affect students' understanding of concepts.
Copyright (c) 2025 Parida Sri Rosmini, Baiq Fara Dwirani Sofia; Lalu Rudyat Telly Savalas, Syarifa Wahidah Al Idrus http://creativecommons.org/licenses/by-sa/4.0
Analisis Kesulitan Belajar Siswa dalam Memahami Konsep Kimia Laju Reaksi Kelas XI IPA SMA Negeri 1 Labuapi
This study aims to describe the learning difficulties of students that need to be overcome in understanding the concept of reaction rate chemistry in class XI science SMA Negeri 1 Labuapi. The approach used is a qualitative descriptive approach. The subjects of this study are all students of class XI science of SMA Negeri 1 Labuapi, with samples selected using the nonprobability sampling method of saturation sampling. Data collection was carried out through a closed questionnaire on a likert scale of 5 and interviews. Data interpretation refers to five categories of learning difficulties, namely very high, high, moderately high, low, and very low, which are determined based on simple percentages and tables. The results of the data analysis showed that: 1) Students who experienced difficulties with internal factors included aspects of student ability 38.7%, student interest 37.5%, understanding of reaction rate material concepts 30%, student motivation 27.5%, included in the low category while external factors with aspects of approach/learning model 35%, teaching resources 23% were in the low category, and teachers 17%, class conditions 15% were in the very low category 2) Students' learning difficulties in understanding the concept of reaction rate chemistry that need to be considered are internal factors of student ability indicators (38.75%) and external factors in learning approaches/model indicators (35%).
Copyright (c) 2025 Afrianti Salahudin, Lalu Rudyat Telly Savalas; Ermia Hidayanti http://creativecommons.org/licenses/by-sa/4.0
Pengembangan E-LKPD Berbasis Model Problem Based Learning Terintegrasi Etnokimia pada Materi Asam Basa
This study aims to develop E-LKPD based on the Problem Based Learning (PBL) model integrated with ethnochemistry that is valid based on aspects of content feasibility, characteristics of ethnochemistry integrated problem based learning, linguistic aspects, presentation and graphics, and to determine user responses to E-LKPD when used in the learning process. The research method used is Research and Development (R&D) with the 4D development model (Define, Design, Develop, and Disseminate). The trial subjects involved teachers and students of class XI of SMAN 2 Rimba Melintang and SMAN 15 Pekanbaru. Data were obtained through expert validation and user response questionnaires. The results of the study showed that the developed E-LKPD was declared valid and feasible to be used as one of the teaching materials, and the responses of teachers and students to E-LKPD in limited trials showed that E-LKPD was included in the very good category when used in the learning process.
Copyright (c) 2025 risqa putri ika; Maria Erna, Sri Hayati http://creativecommons.org/licenses/by-sa/4.0