Chemistry Education Practice
type: channel
description: 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.
publisher: FKIP University of Mataram
language: en-US
publication name: Chemistry Education Practice
issn: 2654-8119
copyright: Authors who publish with Chemistry Education Practice agree to the following terms: Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License 4.0 International License (CC-BY-SA License). This license allows authors to use all articles, data sets, graphics, and appendices in data mining applications, search engines, web sites, blogs, and other platforms by providing an appropriate reference. The journal allows the author(s) to hold the copyright without restrictions and will retain publishing rights without restrictions. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in Chemistry Education Practice. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).
items: The Analysis of Learning Difficulties of Grade XI Students at MAN 1 Lombok Tengah in Chemistry Subject
items: Validity of a Discovery Learning-Based E-Module on Hydrocarbon Material for Grade XI Students of Senior High Schools
items: Development of an E-Worksheet (E-LKPD) Using The Liveworksheets Web Application Based on The CORE Model (Connecting, Organizing, Reflecting, and Extending) for The Reaction Rate Topic
items: Development of LKPD Based on Guided Inquiry and Critical Thinking Instruments in Acid Base Chemistry Lessons
items: The Effect of Guided Inquiry Learning Method Based on Phet Simulation on Chemistry Learning Outcomes in Acid-Base Topics among Grade XI F Students of SMA Negeri 1 Alas
items: Development of a Chemistry Magazine with Formaldehyde Condensation Content as a Reading Supplement for Lectures on the Mechanism and Synthesis of Organic Compound
items: The Implementation of The Problem-Based Learning (PBL) Model to Improve Students’ Problem-Solving Skills on Acid-Base Concepts
items: The Influence of Self-Regulation and Learning Motivation on Students’ Learning Outcomes in the Grade X Chemistry Course at SMA Negeri 1 Lirik
items: The Influence of Interpersonal Intelligence and Learning Independence on the Chemistry Learning Outcomes of Grade X Students at SMAN 15 Pekanbaru
items: Development of Web-Based Interactive Learning Media for the Topic of Atomic Structure and the Periodic System of Elements for Grade X Senior High School Students
items: The Influence of Self-Confidence and Learning Independence on the Chemistry Learning Outcomes of Grade XI Students at SMAN 1 Kerinci Kanan
items: Pengaruh Model Pembelajaran Kooperatif Talking Stick Terhadap Hasil Belajar Kimia Siswa Kelas XI Pada Materi Koloid
items: Majalah Sains: Skrining Fitokimia Ekstrak Daun Kulur (Artocarpus Camansi)
items: Pengembangan LKPD Indikator Alami Asam Basa dari Ekstrak Tumbuhan Kubis Ungu, Bunga Sepatu dan Kunyit
items: Application of Problem Based Learning Model assisted by Google Sites Media to Improve Student Learning Outcomes and Activities in Electrolyte and Non-Electrolyte Solution Material
items: Development of Case-Based Electronic Student Worksheets (E-LKPD) on Carbohydrate Metabolism Disorders for Science Education Students
items: Uji Karakteristik Enzim Lipase Dari Biji Nyamplung (Calophyllum Inophyllum L) Sebagai Media Pembelajaran Biokimia dalam Bentuk Buletin
items: The Effect of Problem-Based Learning Assisted By Chemcollective Media on The Buffer Solution Matter on Critical Thinking Skills of Students in Class XI of SMAN 1 Narmada
items: Pengaruh Model Pembelajaran POE (Predict, Observe, Explain) Terhadap Hasil Belajar Kimia Materi Asam Basa Pada Siswa Kelas XI SMAN 1 Langgudu
items: Development of Augmented Reality (AR)-Based Learning Media Assisted By The Assemblr Edu Application For Molecular Shape Materials
items: Pengaruh Implementasi E-Lkpd Berbasis Problem Based Learning (Pbl) Terintegrasi Micro Scale Lab Terhadap Hasil Belajar Dan Sikap Terhadap Kimia
items: The Influence of Augmented Reality Media on Class XI MIPA SMAN 1 Pujut Student’s Understanding An Acid Base Topics
items: Influence of Digital Literacy and Learning Styles on the Learning Outcomes of Grade XI Students at SMAN 7 Kendari on Acid-Base Material.
items: Effectiveness Of the Problem-Based Learning Model on Acid-Base Material on Learning Outcomes of Grade XI Students at SMA Negeri 1 Maligano
items: Pengaruh Model Pembelajaran Collaborative Creativity Berbantuan Media Virtual Laboratorium Terhadap Hasil Belajar Siswa Pada Materi Asam Basa
items: Penerapan Modul Ajar Kimia Berbasis Etnosains Pada Materi Struktur Atom Dan Sistem Periodik Unsur untuk Meningkatkan Kemandirian Belajar Peserta Didik
items: Pengembangan Tes Uraian Untuk Identifikasi Profil Keterampilan Berpikir Kritis Materi Ikatan Kimia Siswa Kelas XI SMAN 7 Mataram
items: Comparison Of Project-Based Learning and Problem-Based Learning Models With the Aid of Chemsketch Media On Learning Outcomes In Chemical Bonding Material
items: The Effect Of Problem Based Learning (PBL) Learning Model Using Canva Media On The Motivation And Learning Outcomes Of Class X Students In The Material Of Atomic Structure
items: Analysis of Learning Autonomy in Chemistry of Senior High School Students in Mataram City Based on Gender: A Descriptive-Quantitative Study
items: Analysis Of Students’ Chemical Representation Abilities In Acid-Base Practicum At Grade Xi Science Of Sman 2 Mataram
items: Ethnochemical Identification of Sepat Traditional Food from The Sumbawa Community In West Nusa Tenggara

The Analysis of Learning Difficulties of Grade XI Students at MAN 1 Lombok Tengah in Chemistry Subject
type: item
description: Learning difficulties are obstacles that hinder students from achieving optimal academic performance. This study aims to analyze the learning difficulties encountered by Grade XI students in chemistry and to identify the contributing factors. The research employed a descriptive method with a qualitative approach, involving 70 students from MAN 1 Central Lombok as research subjects. Data were collected using questionnaires, interview guides, and students’ test scores. The research instruments were validated by three expert validators, yielding a validity score of 0.88, indicating a high level of validity, and tested for reliability using Cronbach’s Alpha, which confirmed their consistency. Data were analyzed descriptively by calculating the percentage of learning difficulties based on specific indicators or criteria. The findings revealed that students faced major difficulties in calculation-based materials (60%) and theoretical concepts (54.06%). Interviews were conducted to strengthen the data obtained from the questionnaires. The contributing factors were categorized into internal factors, external factors, and learning approaches, with internal factors being the most dominant at 59%. This study is expected to serve as an evaluation material for teachers and schools in designing more effective and context-based learning strategies in chemistry education.
creator: Citra Hijrathaen
creator: Lalu Rudyat Telly Savalas
creator: Sunniarti Ariani
rights: Copyright (c) 2025 Citra Hijrathaen, Lalu Rudyat Telly Savalas, Sunniarti Ariani http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 252
ending page: 256
doi: 10.29303/cep.v8i2.9170

Validity of a Discovery Learning-Based E-Module on Hydrocarbon Material for Grade XI Students of Senior High Schools
type: item
description: The development of science and technology has had a significant impact on the world of education, including the development of teaching materials. One innovation that can be utilized is the electronic module (E-Module) which is more practical and interactive than conventional teaching materials. This study aims to determine the validity of the Discovery Learning-based E-Module on hydrocarbon material for grade XI of senior high school (SMA/MA) and equivalent. The study uses a 4-D development model (Define, Design, Develop, Disseminate) and is limited to the Develop stage. The instruments used include material and media validation sheets, each of which refers to aspects of content feasibility, Discovery Learning characteristics, language, presentation, appearance, and software utilization. The E-Module was developed using the Heyzine Flipbook platform to create an interesting and non-monotonous learning experience. The research sample used in this study was grade XI IPA in two schools, namely SMAN 1 Bangkinang Kota and SMAN 2 Bangkinang Kota. The results showed that the developed E-Module met the validity criteria with an average material validation score of 96.77% and media validation of 98.38%. Thus, the Discovery Learning-based E-Module on hydrocarbon material is declared very valid and suitable for use in the learning process
creator: Shelby Salsabila
creator: Erviyenni Erviyenni
creator: Sri Wilda Albeta
rights: Copyright (c) 2025 Shelby Salsabila, Erviyenni Erviyenni, Sri Wilda Albeta http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 257
ending page: 267
doi: 10.29303/cep.v8i2.9294

Development of an E-Worksheet (E-LKPD) Using The Liveworksheets Web Application Based on The CORE Model (Connecting, Organizing, Reflecting, and Extending) for The Reaction Rate Topic
type: item
description: This study aims to develop an E-LKPD based on the CORE (Connecting, Organizing, Reflecting, Extending) learning model by utilizing the Liveworksheets web application on the reaction rate material for grade XI of high school. The development was carried out using a 4-D model that includes the stages of defining, designing, and developing. The results of validation by material and media experts showed that the E-LKPD had met the validity criteria with consecutive scores in the aspects of content feasibility of 92.85%, CORE characteristics 87.51%, language 100%, presentation 87.5%, visual appearance and software use each 100%. The research sample used in this study were 10 grade XI students of SMAN 1 Pekanbaru and 10 grade XI students of SMAN 3 Pekanbaru. One-on-one and small group trials showed that students gave positive responses to the appearance, ease of use, and understanding of the E-LKPD content. In addition, teacher responses also showed that the E-LKPD was suitable for use in learning with a total percentage of 86.06%. Thus, the CORE-based E-LKPD using Liveworksheets on the demonstration rate material is declared valid and very feasible according to user assessments and can be used as an alternative digital-based interactive teaching material in the 21st century learning era.
creator: Siska Putri Afriyunni
creator: Roza Linda
creator: Erviyenni Erviyenni
rights: Copyright (c) 2025 Siska Putri Afriyunni, Roza Linda, Erviyenni Erviyenni http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 268
ending page: 278
doi: 10.29303/cep.v8i2.9388

Development of LKPD Based on Guided Inquiry and Critical Thinking Instruments in Acid Base Chemistry Lessons
type: item
description: This research is a development research or Research and Development (R&D) which aims to produce Student Worksheets (LKPD) that are categorized as minimally feasible and practical regarding the material of buffer solutions. The type of development used is research and development (R&D) which refers to the 4D model. LKPD validation was carried out by two Chemistry Educationlecturers and one Chemistry subject teacher at the high school level, with two main validations, namely material validation and media validation. The validation process uses the Aiken's Index formula. The validation results show that themedia validity index is 0.76, which means that the level of feasibility is classified as feasible, the material validity index is 0.77, which means that the level of feasibility is classified as feasible, which indicates that the LKPD has good validity. After going through the validation process, the LKPD was tested on 36 students to measure its level of practicality. The test results show that the level of practicality of the LKPD reached 79.44%, which means that the level of practicalityis classified as practical. Based on theseresults, this LKPD is declared feasible to be used as a learning medium regarding buffer solutions at the high school level.
creator: Zuharah Zuharah
creator: I Noman Loka
creator: Sunniarti Ariani
rights: Copyright (c) 2025 Zuharah Zuharah, I Noman Loka, Sunniarti Ariani http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 279
ending page: 284
doi: 10.29303/cep.v8i2.9712

The Effect of Guided Inquiry Learning Method Based on Phet Simulation on Chemistry Learning Outcomes in Acid-Base Topics among Grade XI F Students of SMA Negeri 1 Alas
type: item
description: This study aims to analyze the effect of guided inquiry learning method based on PhET simulation on the learning outcomes of chemistry on acid-base material in class XI F students of SMA Negeri 1 Alas. The type of experimental research is pre-experimental with one group pretest-posttest research design. The population is 165 students with a sampling technique using purposive sampling, namely class XI F4 which consists of 33 students. Class determination is based on the number of students who do not meet the Learning Objective Completion Criteria (KKTP). Data collection techniques use test instruments, active observation, and questionnaires. The average pretest score is 21.5152 and the average posttest score is 79.3333. The results show that the average N-gain score is 0.71 with a high category. The t-test results obtained a Sig. (2-tailed) value of 0.000 <0.05, so H0 is rejected and Ha is accepted. Meanwhile, the percentage of student activity was 74.02% with a good category and student responses to learning were included in the very interested category with an average interest of 84.02%. The results of this study can be concluded that the use of guided inquiry learning methods based on PhET simulation on acid-base material can improve the chemistry learning outcomes of class XI F students of SMAN 1 Alas.
creator: Nila Vidia Ekayanti Vidia
creator: Mukhtar Haris
creator: Baiq Fara Dwirani Sofia
rights: Copyright (c) 2025 Nila Vidia Ekayanti Vidia, Mukhtar Haris, Baiq Fara Dwirani Sofia http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 285
ending page: 291
doi: 10.29303/cep.v8i2.9782

Development of a Chemistry Magazine with Formaldehyde Condensation Content as a Reading Supplement for Lectures on the Mechanism and Synthesis of Organic Compound
type: item
description: The Organic Compound Mechanism and Synthesis Lecture (MSSO) is one of the important courses in the chemistry education study program, which discusses the process of forming organic compounds through various chemical reaction. The limited learning media used, which is only in the form of textbooks, also causes the learning process to be less interesting. Therefore, an interesting and easy to understand learning media innovation is needed. This research aims to develop a reading supplement in te form of a chemical magazine with formaldehyde condensation content as supporting media for MSSO lectures, as well as to determine the level of validity and feasibility. The research methode used is research and development (R&D) with a 4D (define, design, develop, disseminate) model. The result of the validation of the chemical magazine by 3 (three) validators showed a validity coefficient value of 0,93 with a very valid category, and a reliability value of 95%. Student responses to chemistry magazines showed a very practical category with a score 84.98%..
creator: Rahmawati Rahmawati
creator: Elya Hidayati
creator: Syarifa Wahidah Al Idrus
rights: Copyright (c) 2025 Rahmawati Rahmawati, Elya Hidayati, Syarifa Wahidah Al Idrus http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 292
ending page: 301
doi: 10.29303/cep.v8i2.10593

The Implementation of The Problem-Based Learning (PBL) Model to Improve Students’ Problem-Solving Skills on Acid-Base Concepts
type: item
description: This study aims to determine the improvement of students’ problem-solving abilities in acid-base material through the application of the Problem Based Learning (PBL) learning model in class XI of SMAN 7 Pekanbaru. This study uses a quantitative method with a one-group pretest-posttest pre-experimental design. The population in this study were All students of class XI of SMAN 7 Pekanbaru. The research sample was 36 students selected through a simple random sampling technique. The instrument used was a problem-solving ability test validated by 3 validators. Data analysis through normality tests, paired sample t-tests and N-Gain tests. The results showed that there was a significant increase in students’ problem-solving abilities after the application of the PBL model, indicated by the calculated t value > t table (25.983 > 2.03011) and an average N-Gain value of 0.71 with a high category. These results indicate that the PBL model is effective in improving students’ abilities in understanding, planning, and implementing problem solving in acid-base material.
creator: Dini Eka Pratiwi
creator: Maria Erna
creator: Lenny Anwar
rights: Copyright (c) 2025 Dini Eka Pratiwi, Maria Erna, Lenny Anwar http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 302
ending page: 311
doi: 10.29303/cep.v8i2.9392

The Influence of Self-Regulation and Learning Motivation on Students’ Learning Outcomes in the Grade X Chemistry Course at SMA Negeri 1 Lirik
type: item
description: This study aims to determine the effect of self-regulation and learning motivation on Chemistry learning outcomes of class X students at SMA Negeri 1 Lirik. This research uses a quantitative approach with descriptive methods. The sample in this study amounted to 176 students who were taken through total sampling technique. The instruments used are questionnaires of self-regulation and learning motivation, as well as documentation of Chemistry learning outcomes that have been validated both theoretically and empirically. Data analysis techniques include descriptive statistics, simple linear regression tests, and multiple linear regression processed using SPSS. The results of the analysis show that self-regulation has a significant influence on Chemistry learning outcomes, although its contribution is smaller than learning motivation. Learning motivation has a more dominant positive and significant influence on students' Chemistry learning outcomes. Simultaneously, self-regulation and learning motivation together contribute 15.8% to the variation in Chemistry learning outcomes, while the remaining 84.2% is influenced by other factors outside this study. The conclusion of this study is that self-regulation and learning motivation are important factors in supporting students' academic achievement, so they need to be developed continuously through appropriate learning strategies in schools.
creator: Aulia Dinda Widi Andini
creator: Jimmy Copriadi
creator: Herdini Herdini
rights: Copyright (c) 2025 Aulia Dinda Widi Andini, Jimmy Copriadi, Herdini Herdini http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 312
ending page: 319
doi: 10.29303/cep.v8i2.9410

The Influence of Interpersonal Intelligence and Learning Independence on the Chemistry Learning Outcomes of Grade X Students at SMAN 15 Pekanbaru
type: item
description: This study aims to determine the influence of interpersonal intelligence and learning independence on students' chemistry learning outcomes in grade X of SMA/MA or equivalent. This research employed a quantitative approach using a survey method. The sample consisted of 152 grade X students from SMA Negeri 15 Pekanbaru. The instruments used were questionnaires and documentation of students’ chemistry learning scores. Data analysis techniques included descriptive statistics, correlation tests, and multiple linear regression, assisted by SPSS version 25. The results showed that interpersonal intelligence had a significant effect on learning outcomes with a significance value of 0.042 (<0.05), contributing 34%. Learning independence also had a significant effect on learning outcomes with a significance value of 0.025 (<0.05), contributing 58%. Simultaneously, interpersonal intelligence and learning independence had a positive and significant influence on students’ chemistry learning outcomes, with a combined contribution of 58.1%. The conclusion of this study is that interpersonal intelligence and learning independence are two crucial factors that support students' success in chemistry learning.
creator: Wiren Arta Melani
creator: Herdini Herdini
creator: Putri Adita Wulandari
rights: Copyright (c) 2025 Wiren Arta Melani1 http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 320
ending page: 328
doi: 10.29303/cep.v8i2.9428

Development of Web-Based Interactive Learning Media for the Topic of Atomic Structure and the Periodic System of Elements for Grade X Senior High School Students
type: item
description: This study aims to develop and evaluate the feasibility of website-based interactive learning media on the topic of atomic structure and the periodic table of elements for grade X students of senior high school (SMA/MA) or equivalent. The development was carried out using the ADDIE model which includes five stages: analysis, design, development, implementation, and evaluation. Data collection included validation of media and materials by experts, teacher and student response questionnaires, and limited trials. The validation results showed that the learning media met the “valid” criteria in all aspects assessed, including content feasibility (92.5%), language (93.75%), presentation (93.75%), graphics (97.91%), and concept structure (95.31%), with an overall average of 94.64% for material experts. Media experts assessed the visual design and software utilization aspects at 92.5% and 100%, respectively, with an average of 96.25%. In this study, the research sample was 10 grade X students of SMAN 7 Pekanbaru and 10 grade X students of SMAN 9 Pekanbaru as well as 2 chemistry teachers in each school. In the implementation stage, a user response trial will be conducted by the research sample. The user response trial by teachers and students also showed very good results, with an overall average score of 91.80% and 91.76%, which is categorized as "very good". These findings indicate that the developed website-based interactive learning media is effective, practical, and appropriate to support independent and meaningful learning, especially in mastering abstract chemical concepts such as atomic structure and the periodic table.
creator: Riska Riska
creator: Maria Erna
creator: Roza Linda
rights: Copyright (c) 2025 Riska, Maria Erna, Roza Linda http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 329
ending page: 342
doi: 10.29303/cep.v8i2.9455

The Influence of Self-Confidence and Learning Independence on the Chemistry Learning Outcomes of Grade XI Students at SMAN 1 Kerinci Kanan
type: item
description: This study aims to determine the effect of self-confidence and learning independence on chemistry learning outcomes of class XI students of SMAN 1 Kerinci Kanan. The method used is a correlational quantitative approach. This study uses a correlational quantitative approach with a sample size of 99 students. data collection techniques through questionnaires, value documentation, and interviews. The results of descriptive statistical analysis show that the average self-confidence and learning independence of students are in the moderate to high category and self-confidence has a positive and significant effect on learning outcomes with a significance value of 0.045 and a correlation of 0.890. Learning independence also has a significant effect with a significance value of 0.042 and a correlation of 0.567. Simultaneously, self-confidence and learning independence have an influence of 65.2% on learning outcomes, while the rest is influenced by other factors. The conclusion of this study is that self-confidence and learning independence play an important role in improving chemistry learning outcomes, so both need to be developed in the learning process.
creator: Ayu Wulandari
creator: Erviyenni Erviyenni
creator: Abdullah Abdullah
rights: Copyright (c) 2025 Ayu Wulandari, Erviyenni Erviyenni, Abdullah Abdullah http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 343
ending page: 351
doi: 10.29303/cep.v8i2.9450

Pengaruh Model Pembelajaran Kooperatif Talking Stick Terhadap Hasil Belajar Kimia Siswa Kelas XI Pada Materi Koloid
type: item
description: This study aims to examine the effect of the cooperative learning model Talking Stick on students’ learning outcomes in the colloid topic among Grade XI students at MA NWDI Wakan. A quasi-experimental method with a pretest–posttest control group design was employed. The sample consisted of 40 students from classes XI MIPA 1 and XI MIPA 2. Data were analyzed using N-Gain analysis, normality testing, homogeneity testing (F-test), and hypothesis testing with an independent t-test. The hypothesis testing at a significance level of α = 0.05 yielded a t-value of 3.972, which exceeded the t-table value of 2.024, indicating a significant difference between the experimental and control groups. These findings demonstrate that the implementation of the Talking Stick cooperative learning model has a positive effect on students’ learning outcomes in the colloid topic.
creator: Widiawati Widiawati
creator: Jeckson Siahaan
creator: Saprizal Hadisaputra
rights: Copyright (c) 2025 Widiawati Widiawati, Jeckson Siahaan, Saprizal Hadisaputra http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 352
ending page: 356
doi: 10.29303/cep.v8i2.10839

Majalah Sains: Skrining Fitokimia Ekstrak Daun Kulur (Artocarpus Camansi)
type: item
description: This study aims to produce a science magazine, analyze the level of validity and the level of practicality of student responses to science magazines on phytochemical screening and antibacterial and antifungal activity tests of kulur (artocarpus camansi) leaf extracts. The sample in this study used purposive sampling technique, namely 30 students who have programmed Natural Material Chemistry courses and are not currently participating in the MBKM program. Data collection methods used in this study are expert validation sheets and student response questionnaire sheets. The data analysis technique used was data analysis of validation results and analysis of student responses. The results of this study indicate that science magazines have been developed and are feasible to use with an average expert validation score of Aiken's V index = 0.94 which is included in the very valid category, besides the results of student response trials show that science magazines get an average percentage of practicality of 92% which is included in the very practical category. Keywords: Science Magazine, Phytochemical Screening, Antibacterial, Antifungal, Kulur Leaf, Validity, Practicality
creator: Zomratus Solehah
creator: Aliefman Hakim
creator: Jeckson Siahaan
rights: Copyright (c) 2025 Zomratus Solehah, Aliefman Hakim, Jeckson Siahaan http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 357
ending page: 363
doi: 10.29303/cep.v8i2.8890

Pengembangan LKPD Indikator Alami Asam Basa dari Ekstrak Tumbuhan Kubis Ungu, Bunga Sepatu dan Kunyit
type: item
description: This research is development research or Research and Development (R&D) which aims to produce Student Worksheets (LKPD) which are categorized as minimally feasible and practical. The research and development model used in this research is a 4D model which consists of four stages, namely defining, designing, developing and disseminating. In this research, the 4D model is limited to the development stage. Validation of the LKPD was carried out by two Chemistry Education lecturers and two Chemistry subject teachers at high school level. Data analysis in the expert validation test uses the Aiken's V Index formula. The validation results show that the LKPD validity index is generally 0.84 with a very valid validity category, which means the LKPD is very feasible based on validity. After the LKPD was tested for validation and revision, it was then tested for practicality on 25 students and 2 chemistry subject teachers. The test results show that the practical level of LKPD generally reaches 86% based on student responses and 95% based on teacher responses, both of which are classified as very practical. Based on this, this LKPD is declared very suitable for use as a learning medium regarding acid-base solutions at the high school level.
creator: Salsabila Atazzahro
creator: Muti'ah Muti'ah
creator: I Nyoman Loka
rights: Copyright (c) 2025 Salsabila Atazzahro; Muti'ah Muti'ah, I nyoman loka http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 364
ending page: 369
doi: 10.29303/cep.v8i2.8968

Application of Problem Based Learning Model assisted by Google Sites Media to Improve Student Learning Outcomes and Activities in Electrolyte and Non-Electrolyte Solution Material
type: item
description: This research is motivated by the low learning outcomes and activities of students in chemistry material, especially electrolyte and non-electrolyte solutions, which are caused by the dominance of conventional learning methods and the lack of use of innovative digital media. The research was conducted at SMAS Budisatrya in the 2024/2025 academic year. The objectives of this study were (1) to determine the effect of implementing a problem-based learning model assisted by Google Sites media on improving student learning outcomes; (2) to determine the effect of implementing a problem-based learning model assisted by Google Sites media on student learning activities; (3) to determine the relationship between learning activities and student learning outcomes in electrolyte and non-electrolyte solution material. The population in this study was all class X of SMAS Budisatrya. Sampling was carried out using a random sampling technique and the classes used were class X-2 as the experimental class and X-3 as the control class. Hypothesis testing was carried out using a right-sided one-tailed t-test. The results of the study at a significance level of α = 0.05 showed that Sig (2-tailed) <0.05 (0.000 <0.05) then Ha was accepted, there was an increase in student learning outcomes taught with the Problem Based Learning learning model assisted by Google Sites Media on the material of Electrolyte and Non-Electrolyte Solutions. The average increase in student learning outcomes in the experimental class was 77.21% with a high category and the average increase in student learning outcomes in the control class was 50% with a moderate category. The correlation test of learning activities on improving student learning outcomes showed Sig (2-tailed) = 0.002 at a significance level of α = 0.05, then Ha was accepted, there was a correlation between learning activities and improving learning outcomes.
creator: Metha Lolyta Sitanggang
creator: Tita Juwitaningsih
rights: Copyright (c) 2025 Metha Lolyta Sitanggang; Tita Juwitaningsih http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 370
ending page: 377
doi: 10.29303/cep.v8i2.9387

Development of Case-Based Electronic Student Worksheets (E-LKPD) on Carbohydrate Metabolism Disorders for Science Education Students
type: item
description: Biochemistry is one of the courses that encompasses broad and complex material, including metabolism. Students’ understanding of carbohydrate metabolism is often limited to theoretical and memorization aspects. Therefore, it is necessary to develop learning media that support interactive and more meaningful learning. This study aims to develop a case-based Electronic Student Worksheet (E-LKPD) on carbohydrate metabolism disorders for students in the Science Education Program. The research employed the Research and Development (R&D) method with the development stages of Define, Design, and Develop. Data were obtained from expert validation as well as user response questionnaires involving 25 science education students. The results of material validation, language validation, and output validation showed “high validity and feasibility,” while user questionnaires indicated an average 90% “very good” response and agreement to use the E-LKPD in Biochemistry learning. Thus, the case-based E-LKPD on carbohydrate metabolism disorders is considered feasible to be used as a learning medium in Biochemistry courses, particularly in supporting case-based and student-centered learning.
creator: Eka Nurul Qomaliyah
creator: Habiddin Habiddin
rights: Copyright (c) 2025 Eka Nurul Qomaliyah, Habiddin Habiddin http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 378
ending page: 385
doi: 10.29303/cep.v8i2.10128

Uji Karakteristik Enzim Lipase Dari Biji Nyamplung (Calophyllum Inophyllum L) Sebagai Media Pembelajaran Biokimia dalam Bentuk Buletin
type: item
description: This study aimed to develop a biochemistry learning media derived from experimental research on the characterization of lipase enzymes extracted from Calophyllum inophyllum (nyamplung) seeds. The development process employed a Research and Development (R&D) approach, adopting the ADDIE model (Analyze, Design, Development, Implementation, and Evaluation). The study was limited to the development phase. The learning media was evaluated through two primary dimensions: validity and practicality. Data collection involved the distribution of expert validation instruments to subject-matter lecturers and practicality response instruments to students via Google Forms. A purposive sampling technique was employed, targeting Chemistry Education students from the 2020 and 2021 cohorts who had enrolled in the Biochemistry I course. A total of 30 students were randomly selected from this pool. The validity assessment conducted by expert validators yielded a score of 90.5%, indicating that the media falls within the "highly valid" category. Similarly, the practicality test, based on student responses, resulted in a score of 91.5%, which is classified as "highly practical”. These findings indicate that the developed biochemistry bulletin is both valid and practical, thus offering strong potential for use as an effective instructional tool in biochemistry learning contexts.
creator: Lalu Anugrah Dimas Juniarly
creator: Aliefman Hakim
creator: Burhanuddin Burhanuddin
rights: Copyright (c) 2025 lalu anugrah dimas juniarly, Aliefman Hakim; Burhanuddin Burhanuddin http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 386
ending page: 393
doi: 10.29303/cep.v8i2.9771

The Effect of Problem-Based Learning Assisted By Chemcollective Media on The Buffer Solution Matter on Critical Thinking Skills of Students in Class XI of SMAN 1 Narmada
type: item
description: This study aims to explain the effect of media-assisted problem-based learning using ChemCollective on buffer solution material on the critical thinking skills of 11th grade students at SMAN 1 Narmada. This quasi-experimental study used a nonequivalent control group design and was conducted in classes XI F5 and XI F6 with a total of 72 students. Cluster sampling was used as the sampling technique. The determination of the experimental class and control class was based on the lower average pretest score as the experimental class and the higher score as the control class. The pretest results obtained in class XI F5 were 53.44 and class XI F6 were 59.69, so class XI F5 was the experimental class and class XI F6 was the control class. The data collection technique used a two-tier multiple-choice test instrument. The results showed that the average N-Gain score was 0.6 in the experimental class and 0.34 in the control class, both of which were in the moderate category. The t-test result obtained was tcount (4.25) > ttable (1.994), so Ho was rejected and Ha was accepted. It can be concluded that the use of media-assisted problem-based learning chemcollective on buffer solution material had an effect on improving the critical thinking skills of grade XI students at SMAN 1 Narmada.
creator: Nia Febrianti
creator: Yayuk Andayani
creator: Mukhtar Haris
rights: Copyright (c) 2025 Nia Febrianti, Yayuk Andayani; Mukhtar Haris http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 394
ending page: 401
doi: 10.29303/cep.v8i2.10748

Pengaruh Model Pembelajaran POE (Predict, Observe, Explain) Terhadap Hasil Belajar Kimia Materi Asam Basa Pada Siswa Kelas XI SMAN 1 Langgudu
type: item
description: This study aims to determine the effect of POE (Predict, Observe, Explain) learning model on chemical learning outcomes of acid-base material in class XI IPA SMAN 1 Langgudu. This type of research is a quasi experimental design. The population is all students of class XI IPA SMAN 1 Langgudu which amounted to 50 people. The sampling technique used saturated sampling. Determination of control and experimental classes is based on the average value of the midterm assessment, students of class XI IPA 1 obtained a greater average value of 78.76 than class XI IPA 2 which is 70.16 so that class XI IPA 1 is designated as the control class and XI IPA 2 as the experimental class. Data collection techniques using test instruments. The average value of the experimental class pretests (49.12) was lower than the control class (52.28). While the average value of the experimental class posttest (84.4) is higher than the control class (76.92). The N-Gain test results show that the increase in learning outcomes of experimental class students is more in the high category than the control class. The t-test results obtained tcount of 2.4091> ttable 2.0106 then H0 is rejected and Ha is accepted. While the results of the percentage of student activeness of the experimental class at each meeting were higher than the control class, so that experimental class students were more active than the control class. The results of this study can be concluded that the POE learning model (Predict, Observe, Explain, and Explain) is an effective learning model.
creator: Nurkamaliah Lia
creator: Jeckson Siahaan
creator: Mukhtar Haris
rights: Copyright (c) 2025 Nurkamaliah Lia, Jeckson Siahaan; Mukhtar Haris http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 402
ending page: 406
doi: 10.29303/cep.v8i2.10146

Development of Augmented Reality (AR)-Based Learning Media Assisted By The Assemblr Edu Application For Molecular Shape Materials
type: item
description: This study aims to determine the level of validity of the content and suitability of augmented reality (AR)-based learning media developed using the Assemblr Edu application for molecular structure material. This study employs the Design-Based Research (DBR) method with the ADDIE (Analysis, Design, Development, Implementation, Evaluation) model, modified up to the development stage. Data collection techniques include interviews, validity questionnaires, and media feasibility questionnaires. Data validity analysis uses Aiken’s V formula, while media feasibility is measured using a percentage formula. The learning media product was tested on 28 eleventh-grade students at SMAN 1 Wanasaba. The validity test results showed that the media was highly valid with an Aiken’s V value of 0.92. The feasibility test results showed that the media was highly feasible with a percentage of 86.86%. This media is deemed valid and suitable for use as an innovative learning alternative to enhance students' understanding of molecular structure concepts. This study demonstrates that integrating AR technology into learning can serve as a strategic tool for optimizing the visualization of abstract concepts in a contextual, engaging, and relevant manner aligned with 21st-century needs.
creator: Fathoni Arif Pratama
creator: Jeckson Siahaan
creator: Nora Listantia
rights: Copyright (c) 2025 Fathoni Arif Pratama, Jeckson Siahaan, Nora Listantia http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 407
ending page: 419
doi: 10.29303/cep.v8i2.10144

Pengaruh Implementasi E-Lkpd Berbasis Problem Based Learning (Pbl) Terintegrasi Micro Scale Lab Terhadap Hasil Belajar Dan Sikap Terhadap Kimia
type: item
description: This research aims to determine the effect of implementing E-LKPD based on Integrated Problem Based Learning (PBL) Micro Scale Lab on learning outcomes and attitudes towards chemistry in class XI colloid materials at SMAN 6 Mataram. The method used is a quasi-experimental method with a non-equivalent control group design. The sampling technique used is purposive sampling, where the researcher deliberately selects samples for certain reasons. The total population in class XI MIPA is 99 people. The number of samples in this study was 68 students in class XI MIPA 1 consisting of 34 students as the experimental class and class XI MIPA 2 consisting of 34 students as the control class. This research used a quantitative research approach. Data analysis was carried out using the normality test, homogeneity test, and hypothesis test (t-test) at a significance level of 0.05 or 5%. The results of the t-test obtained a value of rcount < rtable, namely 0.012 < 0.05, so it can be concluded that the application of the problem based learning model integrated with micro scale lab has a positive effect on student learning outcomes and attitudes towards chemistry at SMAN 6 Mataram in class XI colloid material.
creator: Susi Lestari Widiantika
creator: Eka Junaidi
creator: Yunita Arian Sani Anwar
rights: Copyright (c) 2025 Susi Lestari Widiantika, Eka Junaidi, Yunita Arian Sani Anwar http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-11-30
publication date: 2025-11-30
volume: 8
number: 2
starting page: 420
ending page: 429
doi: 10.29303/cep.v8i2.8938

The Influence of Augmented Reality Media on Class XI MIPA SMAN 1 Pujut Student’s Understanding An Acid Base Topics
type: item
description: This study aims to determine the effect of Augmented Reality media on the conceptual understanding of eleventh-grade students at SMAN 1 Pujut on the topic of acids and bases. The research design used is a quasi-experiment with a nonequivalent control group design. The population for this study consists of tenth-grade students at SMAN 1 Pujut. The research sample includes class XI F1 as the experimental group (23 students) and class XI F2 as the control group (20 students). The learning outcome instrument is a post-test in the form of multiplechoice questions. Quantitative data analysis was performed to test the hypothesis using a t-test. The results show that the calculated t-value (3,84) is greater than the table t-value (2.01), which means that the null hypothesis (H₀) is rejected, and the alternative hypothesis (Hₐ) is accepted. The results of the student response questionnaire to the application of Augmented Reality learning media on acid-base material showed that the number of students who stated Strongly Agree (SS) was 44%, Agree (A/S) was 34%, Disagree (D/TS) was 17%, and Strongly Disagree (SD/STS) was 5%. Thus, the average percentage of Strongly Agree and Agree choices was 78%. Therefore, it can be concluded that there is an effect of using Augmented Reality media on the conceptual understanding of eleventh-grade students at SMAN 1 Pujut.
creator: Baiq Ulfa Husnusshaliha
creator: Muti'ah Muti'ah
creator: Lalu Rudyat Telly Savalas
creator: Supriadi Supriadi
rights: Copyright (c) 2025 Baiq Ulfa Husnusshaliha, Muti'ah Muti'ah, Lalu Rudyat Telly Savalas, Supriadi Supriadi http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-11-30
publication date: 2025-11-30
volume: 8
number: 2
starting page: 430
ending page: 437
doi: 10.29303/cep.v8i2.8622

Influence of Digital Literacy and Learning Styles on the Learning Outcomes of Grade XI Students at SMAN 7 Kendari on Acid-Base Material.
type: item
description: This study aims to describe digital literacy, learning styles, and chemistry learning outcomes on acid–base material, as well as the simultaneous and partial effects of digital literacy and learning styles. This research is quantitative and uses a survey method. The sample consisted of all 41 eleventh-grade students of SMAN 7 Kendari in the 2024/2025 academic year. The data collection techniques were questionnaires and documentation. The questionnaires were used to measure digital literacy skills and learning styles using a 4-point Likert scale. Documentation of learning outcomes was obtained from students’ daily test scores. Hypothesis testing employed simple linear regression analysis and multiple linear regression analysis based on the questionnaire data and learning outcome data. The results of the simple linear regression test showed that digital literacy had a significant effect on learning outcomes with a contribution of 10.2%, whereas learning styles did not have a significant effect on learning outcomes, contributing only 0.04%. The results of the multiple linear regression test showed that digital literacy and learning styles simultaneously did not have a significant effect on acid–base chemistry learning outcomes, with a total contribution of 10.2%.
creator: Ernawati Erna
creator: Aceng Haetami
creator: Dahlan Dahlan
rights: Copyright (c) 2025 Ernawati Erna, Aceng Haetami , Dahlan Dahlan http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-11-30
publication date: 2025-11-30
volume: 8
number: 2
starting page: 438
ending page: 446
doi: 10.29303/cep.v8i2.9190

Effectiveness Of the Problem-Based Learning Model on Acid-Base Material on Learning Outcomes of Grade XI Students at SMA Negeri 1 Maligano
type: item
description: This study aims to determine the chemistry learning outcomes of students after being taught using the Problem-Based Learning (PBL) model on acid–base material; to examine the effectiveness of the PBL model in improving students’ learning outcomes on acid–base topics; and to identify students’ responses toward the use of the PBL model in learning acid–base concepts. This research employed a pre-experimental design with a one-group pretest–posttest. The study subjects were 31 students of class XI A¹ at SMA Negeri 1 Maligano in the 2024/2025 academic year. Data were collected through learning outcome tests and student response questionnaires. The findings indicate that students taught using the PBL model achieved an average chemistry learning outcome score of 86.6, which falls into the “excellent” category. The PBL model was found to be effective in improving students’ chemistry learning outcomes in acid–base material, as reflected in an N-gain score of 0.78, which is categorized as high. In addition, students showed positive responses toward the implementation of the PBL model, reaching 74.78% which is categorized as good.
creator: Satna Rahayu Satna
creator: Maysara Maysara
creator: Aceng Haetami
rights: Copyright (c) 2025 Satna Rahayu Satna, Maysara Maysara , Aceng Haetami http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 447
ending page: 453
doi: 10.29303/cep.v8i2.9192

Pengaruh Model Pembelajaran Collaborative Creativity Berbantuan Media Virtual Laboratorium Terhadap Hasil Belajar Siswa Pada Materi Asam Basa
type: item
description: Penelitian ini bertujuan untuk menganalisis pengaruh penerapan model pembelajaran Collaborative Creativity yang dipadukan dengan media virtual laboratorium terhadap hasil belajar siswa pada materi asam basa di SMA Negeri 1 Tanjung Beringin. Sampel penelitian dipilih dari populasi menggunakan teknik cluster random sampling. Penelitian ini merupakan penelitian kuantitatif dengan menggunakan desain non-equivalent control group design, melibatkan dua kelas XI yang ditentukan secara acak sebagai kelas sampel. Data penelitian diperoleh melalui tes hasil belajar dan angket respons siswa. Nilai rata-rata pretest yang diperoleh siswa adalah 37,66, sedangkan setelah perlakuan melalui model Collaborative Creativity dan dilakukan posttest, nilai rata-rata meningkat menjadi 85,66. Hasil ini menunjukkan bahwa model pembelajaran tersebut, yang didukung media virtual laboratorium, memberikan pengaruh positif terhadap hasil belajar siswa pada materi asam basa. Selain itu, data angket menunjukkan bahwa 77,83% siswa memberikan respons positif terhadap penerapan model pembelajaran tersebut. Terdapat pula hubungan yang signifikan antara respons siswa dan hasil belajar dengan nilai korelasi sebesar r_hitung = 0.94, yang lebih tinggi dibandingkan r_tabel = 0.36.
creator: Emma Tresia Simamora
creator: Haqqi Annazili Nasution
creator: Rini Selly
rights: Copyright (c) 2025 Emma Tresia Simamora, Haqqi Annazili Nasution, Rini Selly http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-11-30
publication date: 2025-11-30
volume: 8
number: 2
starting page: 454
ending page: 459
doi: 10.29303/cep.v8i2.9229

Penerapan Modul Ajar Kimia Berbasis Etnosains Pada Materi Struktur Atom Dan Sistem Periodik Unsur untuk Meningkatkan Kemandirian Belajar Peserta Didik
type: item
description: Kemandirian belajar peserta didik perlu ditingkatkan karena menjadi aspek penting dalam pembelajaran. Penelitian ini bertujuan untuk menganalisis efektivitas modul ajar kimia berbasis etnosains dalam meningkatkan kemandirian belajar peserta didik. Metode yang digunakan adalah eksperimen semu dengan desain one-group pretest–posttest. Populasi pada penelitian ini yaitu seluruh peserta didik kelas X SMAN 3 Mataram yang berjumlah 360 peserta didik. Sampel penelitian terdiri dari dua kelas X SMAN 3 Mataram yang dipilih dari 360 peserta didik menggunakan metode purposive sampling. Data dikumpulkan menggunakan angket berisi 20 pernyataan berdasarkan indikator kemandirian belajar, kemudian dianalisis menggunakan statistik deskriptif dan uji N-gain. Hasil penelitian menunjukkan rata-rata pretest sebesar 34,25% dan posttest 32,88% dengan kategori cukup baik. Uji N-gain menunjukkan 35 peserta didik mengalami peningkatan rendah, 27 sedang, dan 11 tinggi. Berdasarkan indikator, dua indikator mengalami peningkatan tinggi dan empat indikator peningkatan sedang. Secara keseluruhan, modul berbasis etnosains pada materi struktur atom dan sistem periodik mampu meningkatkan kemandirian belajar pada kategori sedang.
creator: Laili Kamilatunnisa
creator: Yayuk Andayani
creator: Aliefman Hakim
rights: Copyright (c) 2025 Laili Kamilatunnisa, Yayuk Andayani, Aliefman Hakim http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 460
ending page: 464
doi: 10.29303/cep.v8i2.9564

Pengembangan Tes Uraian Untuk Identifikasi Profil Keterampilan Berpikir Kritis Materi Ikatan Kimia Siswa Kelas XI SMAN 7 Mataram
type: item
description: This research is a type of Research and Development (R&D) with the 4D model (Define, Design, Develop, Disseminate) which aims to develop a description test instrumen to identify critical thinking skills of class XI students of SMAN 7 Mataram on chemical bonding material. The instrumen was developed by fulfilling the criteria of validity, reliability, level of difficulty, and distinguishing power. Validation was carried out by three experts, consisting of two Chemistry Education lecturers at Mataram University and one chemistry teacher at SMAN 7 Mataram. The results of content validity using Aiken's V with an average value of 0.82 which is classified as having a very high level of validity. Empirical validity states that all seven items are valid with the highest value reaching 0.83. The reliability test rcount of 0.813 is greater than the rtable indicates the item is reliable. The level of difficulty of the questions is in the medium category which ranges from 0.52-0.66. Differentiating power is in the sufficient to very good category ranging from 0.26-0.72. Students' critical thinking skills assessed using the developed instrumen were sufficient with an average value of 58.
creator: Nur Ismiyahyi
creator: I Nyoman Loka
creator: Muti’ah Muti’ah
rights: Copyright (c) 2025 Nur Ismiyahyi http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-11-30
publication date: 2025-11-30
volume: 8
number: 2
starting page: 465
ending page: 471
doi: 10.29303/cep.v8i2.9932

Comparison Of Project-Based Learning and Problem-Based Learning Models With the Aid of Chemsketch Media On Learning Outcomes In Chemical Bonding Material
type: item
description: This study is an experimental study that aims to measure the differences in student learning outcomes taught using the project-based learning and problem-based learning models. The study was conducted at SMA Negeri 1 Percut Sei Tuan in the 2024/2025 academic year. The population in this study were all class X students of SMA Negeri 1 Percut Sei Tuan. Sampling was carried out using random sampling techniques and the classes used were class X-6 as experimental class I and class X-8 as experimental class II. The independent variables are the project-based learning and problem-based learning models. The dependent variable is student learning outcomes in chemical bonding material. The research design used is the pretest-posttest control group design. Data collection was carried out by giving 20 questions with five answer choices. The average student learning outcomes in experimental class I were 81.76 and the average student learning outcomes in experimental class II were 74.55. The requirements for parametric testing on questions are normally distributed and homogeneous so that hypothesis testing can be carried out using a two-tailed t-test. The results of the hypothesis test with a two-tailed t-test obtained a sig value (2-tailed) of 0.001 at a significance level of α = 0.05. Based on the results of the hypothesis test, it can be concluded that there is a significant difference in learning outcomes in the chemical bond material learned using the project-based learning model and the problem-based learning model.
creator: Agil Makarim Pane
creator: Tita Juwitaningsih
rights: Copyright (c) 2025 Agil Makarim Pane, Tita Juwitaningsih http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-05-30
publication date: 2025-05-30
volume: 8
number: 2
starting page: 472
ending page: 477

The Effect Of Problem Based Learning (PBL) Learning Model Using Canva Media On The Motivation And Learning Outcomes Of Class X Students In The Material Of Atomic Structure
type: item
description: This study aims to determine the Effect of the Problem Based Learning (PBL) Learning Model Assisted by Canva Media on the Motivation and Learning Outcomes of Class X SMA Students on Atomic Structure Material. This research was conducted in the even semester of the 2024/2025 academic year at SMA Negeri 1 Percut Sei Tuan. The population in this study were all class X SMA students. The class sampling technique used in this study was purposive sampling of around 36 students who were relatively homogeneous in status. The research design used was a Pretest-posttest control group design. The instrument used was a multiple-choice test instrument related to atomic structure material. Hypothesis testing was carried out using a two-tailed t-test. The results obtained in this study indicate that there is an effect of the problem based learning model assisted by Canva media on student learning outcomes on atomic structure material. The average pretest score in the experimental class was 30.55 and the posttest in the experimental class was 84.86. This proves that there is an effect of the problem based learning model assisted by Canva media on student learning outcomes.
creator: Graceana Ambarita
creator: Marham Sitorus
rights: Copyright (c) 2025 Graceana Ambarita, Marham Sitorus http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 478
ending page: 483
doi: 10.29303/cep.v8i2.9324

Analysis of Learning Autonomy in Chemistry of Senior High School Students in Mataram City Based on Gender: A Descriptive-Quantitative Study
type: item
description: This study aims to analyze learning autonomy in chemistry among senior high school students in Mataram City, based on gender, using a descriptive-quantitative approach. This quantitative descriptive research employed a survey method utilizing a four-point Likert scale questionnaire consisting of 20 statements measuring six indicators: (1) learning initiated independently, (2) independence from others, (3) having a learning plan, (4) disciplined behavior, (5) active participation during learning activities, and (6) the desire to progress. The results of the independent samples t-test (p-value = 0.021 < 0.05) indicate a significant difference in self-regulated learning in chemistry between male and female students. The mean difference score of –2.54 shows that female students have higher learning autonomy in chemistry than male students. Particularly in the indicators of active participation during the learning process, the desire to improve, learning initiative, learning planning, and disciplined behavior. Despite the differences, both male and female senior high school students in Mataram City demonstrate good levels of learning autonomy in chemistry.
creator: Ermia Hidayanti
creator: Yayuk Andayani
rights: Copyright (c) 2025 Ermia Hidayanti, Yayuk Andayani http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-05-30
publication date: 2025-05-30
volume: 8
number: 2
starting page: 484
ending page: 489
doi: 10.29303/cep.v8i2.10867

Analysis Of Students’ Chemical Representation Abilities In Acid-Base Practicum At Grade Xi Science Of Sman 2 Mataram
type: item
description: This study aims to analyze the chemical representation abilities of students at the macroscopic, submicroscopic, and symbolic levels in acid-base material practicums in class XI Science of SMAN 2 Mataram. The type of research is descriptive quantitative. The study population was 288 students of class XI SMAN 2 Mataram. The research sample was selected using purposive sampling technique obtained by class XI Science 7 students totaling 36 students and class XI Science 8 students totaling 36 students. Data collection techniques used interview, observation, documentation, and test instruments. Data analysis used N-gain percentage. The results showed that students' initial chemical representation abilities were relatively low, with an average pretest of 34.50% (macroscopic), 31.00% (submicroscopic), and 35.00% (symbolic). After the lab-based learning, posttest results showed significant improvements at all levels of representation, namely 85.25% (macroscopic), 78.25% (submicroscopic), and 76.50% (symbolic). The average total improvement increased from 33.50% to 79.99%, and is considered good. These results indicate that the chemistry lab is effective in improving students' representational skills on acid-base material.
creator: Nurul Fitriani
creator: Muntari Muntari
creator: Dodiy Firmansyah
rights: Copyright (c) 2025 Nurul Fitriani, Muntari Muntari http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-11-30
publication date: 2025-11-30
volume: 8
number: 2
starting page: 490
ending page: 495
doi: 10.29303/cep.v8i2.10861

Ethnochemical Identification of Sepat Traditional Food from The Sumbawa Community In West Nusa Tenggara
type: item
description: This study aims to identify the chemical knowledge (ethno-chemistry) of traditional food of the Sumbawa community, namely sepat. The research is qualitative with a phenomenological approach, using key informants as sources of information. The key informants are customary leaders or members of the Sumbawa community who have in-depth knowledge about the traditional food sepat. Information was obtained through observation and interviews using validated instruments. The data were analyzed descriptively using the Miles–Huberman method, which includes the stages of data collection, data reduction, presentation, data verification, and conclusion. The identification results found that in traditional sepat food, there is a connection with chemistry concepts, including: food chemistry, proteins, chemical reactions, acids and bases, energetics, systems and environment, solutions and mixtures. It is hoped that these findings can help teachers, students, and education observers in developing teaching materials or learning resources based on local culture.
creator: Yayuk Andayani
creator: Yunisa Riza
creator: Aliefman Hakim
rights: Copyright (c) 2025 Yayuk Andayani, Yunisa Riza, Aliefman Hakim http://creativecommons.org/licenses/by-sa/4.0
license: http://creativecommons.org/licenses/by-sa/4.0
date: 2025-12-01
publication date: 2025-12-01
volume: 8
number: 2
starting page: 496
ending page: 501
doi: 10.29303/cep.v8i2.10876