Authors:Boy Baunsele Pages: 1 - 11 Abstract: Methylene blue is a dye used in the textile industry, especially in fabric dyeing, but it has a negative impact on the environment. Various methods have been taken to reduce or even eliminate these pollutants in the environment. This research aims to examine the ability of teak sawdust to act as an adsorbent for methylene blue dye. So far, teak wood sawdust as waste that has only been burned has not been used properly and can be used as an adsorbent for the adsorption of methylene blue. This research using the adsorption method uses an 80 mesh adsorbent. The results showed that adsorption of methylene blue occurred optimally at pH 6, with an adsorption percentage of 99.26% and an optimum contact time of 30 minutes for adsorption with an adsorption percentage of 99.4% and an adsorption capacity of 2.045 mg g-1. PubDate: 2024-06-12 DOI: 10.33369/alo.v8i1.32235 Issue No:Vol. 8, No. 1 (2024)
Authors:Nadia Amida Pages: 12 - 21 Abstract: This study examines the development of systems thinking skills research in chemistry education. The method used is bibliometric analysis with the help of the VOSViewer application. The research was conducted in 4 stages, namely: 1) collecting publication data using the Scopus database using the keyword "System thinking in chemistry education," 2) processing data using Microsoft Excel application, 3) bibliometric computational mapping analysis using the VOSViewer application, and 4) analyzing the results of computational mapping. Publication data are articles from 2014 to 2023. This research is limited to system thinking skills in chemistry education. The results of the initial findings were re-selected so that 67 publications that met the requirements for research were obtained. Based on the results of computational mapping, it was found that research over the past ten years has fluctuated with the most publications in 2019, a total of 31 publications. This study provides a comprehensive overview and holistic perspective of systems thinking skills in chemistry education and directions for future research by integrating the analysis results with relevant reviews. PubDate: 2024-06-12 DOI: 10.33369/alo.v8i1.32623 Issue No:Vol. 8, No. 1 (2024)
Authors:Vera Vera Dwi Alfina, Sura Menda Ginting, I Nyoman Candra Pages: 22 - 29 Abstract: This research aims to identify students' misconceptions on redox reaction material using the Four Tiers Diagnostics Test. The four tiers/stages are selecting answer, affirmation of the chosen answer, selecting reason of the chosen answer, and the affirmation of the selected reason. The diagnostic was carried out at SMAN (senior high school) 5 Bengkulu. The trial of the diagnostic test was conducted to students of class X MIPA 3 and the misconception diagnostic was conducted to students of X MIPA 2. The results show that the percentage of student misconceptions regarding the redox reaction material was 35% (medium category), while 40% of students understand the concept, and 25% of students do not understand the concept. The highest misconception occurs in the sub-concept of reduction and oxidation reactions (42%), follows by dispropornation and conpropornation reactions, (38%), oxidizing-reducing agents (37%), change in oxidation number from element to compound (24 %). PubDate: 2024-06-12 DOI: 10.33369/alo.v8i1.34017 Issue No:Vol. 8, No. 1 (2024)
Authors:Hizkia Mahezra Agustin, Rina Elvia, Salastri Rohiat Pages: 30 - 39 Abstract: Penelitian bertujuan untuk meningkatkan kemampuan berpikir kreatif siswa dengan menerapkan model pembelajaran group investigation menggunakan bantuan media animasi. Penelitian ini merupakan penelitian tindakan kelas (PTK). Menggunakan kelas XII IPA 4 MAN 1 Kota Bengkulu tahun ajaran 2022/2023 sebagai subjek dari penelitian. Dalam pelaksanaannya, penelitian ini dilaksanakan dengan menggunakan 3 siklus yang terdiri dari 4 tahap yaitu (1) Perencanaan, (2) Pelaksanaan, (3) Observai dan (4) Refleksi. Pengumpulan data dalam penelitian ini digunakan lembar observasi , tes dan lembar respon siswa. Dari data hasil analisis yang dilakukan model pembelajaran dan media yang digunakan dapat membantu meningkatkan kemampuan berpikir kreatif siswa dengan peningkatan hasil pada setiap siklus, pada siklus I 56,2%, siklus II 75% dan siklus III 81,2%. Data hasil observasi siswa menunjukan terjadi peningkatan terhadap aktifan siswa pada setiap siklusnya, siklus I memiliki skor penilaian 13, siklus II 14,5 dan siklus III 17,8. Aspek kemampuan berpikir kreatif yang mengalami peningkatan yang siginifikan adalah aspek flexibility dan originality PubDate: 2024-06-12 DOI: 10.33369/alo.v8i1.34441 Issue No:Vol. 8, No. 1 (2024)
Authors:Yessi Rahma Oktavia, Elvinawati Elvinawati, Salastri Rohiat Pages: 40 - 47 Abstract: [The Development of Electronic Module using Edmodo Based-3D Pageflip Professional on Chemistry Subject] This research was an R and D research of developing electronic module using Edmodo-based 3D Pageflip Professional on chemistry subject. The research aimed to determine the feasibility and students’ responses on the developed module. The development process was based of ADDIE model (Analysis, Design, Develop, Implementation, Evaluation). The research was conducted in SMAN 09 (Senior highschool) science class grade IX (MIPA A) on a small scale group of students.. The research results show that (1) the developed product which is the electronic module is feasible as learning material with the feasibility score on media and content were 80,43% and 81,33 % respectively; (2) the students’ response on the module developed show possitive feedback with 80,69% response stated that the module is interesting and helpful in learning chemistry subject. PubDate: 2024-06-12 DOI: 10.33369/alo.v8i1.34442 Issue No:Vol. 8, No. 1 (2024)
Authors:Laila Dwi Apriliana, I Nyoman Candra, Wiwit Wiwit Pages: 48 - 59 Abstract: [The development of environmental based-labwork instruction book on the topic of exotherm and endotherm reaction for student of Class XI of Science, SMAN 8 Bengkulu Utara]The type of this research is a Research and Development study developing an environmental based - labwork instruction book on exothermic and endothermic reaction topic with the aim of knowing the feasibility and response of students to the labwork instruction book and to determine the psychomotor (skills) score of students using it. This research uses the ADDIE development model (Analysis, Design, Development and Evaluation). This research was conducted at SMAN 8 Bengkulu Utara with research subjects namely 9 students in class XI MIPA 3 for small-scale trials and 28 students in class XI MIPA 1 for large-scale trials. Based on the research results, it is found that (1) The developed environment-based labwork instruction book was suitable to be applied with the percentage of material and media validity respectively were 92.5% and 93.3% with very valid criteria (2) Student responses to the labwork instruction guidebook fell in the very good criteria from the aspects of content quality, language and usefulness with an average percentage was 92.2% on a small scale and 92.7% on a large scale. (3) The psychomotor assessment of students using the labwork instruction book fell in a good criteria, 71.0% for the assessment aspect of the preparation stage; 74.8% for assessment of the implementation stage and 84.7% for assessment of the final stage, with an average percentage of 76.8%. PubDate: 2024-06-13 DOI: 10.33369/alo.v8i1.34456 Issue No:Vol. 8, No. 1 (2024)
Authors:Elen Wahyu Ningsih, Dewi Handayani, Nurhamidah Pages: 60 - 72 Abstract: This study aims to develop a web-based colloid system teaching materials assisted by exe-learning applications. The development model used was the 4-D (Four-D) model which consists of the define, design, develop and disseminate stages. The research was conducted at SMA Negeri 2 Bengkulu Utara with the research subjects being 12 students of class XI MIPA 2 for the small-scale trial, and 34 students of grade XI MIPA 3 for the large-scale trial. The instruments used were interview sheets, questionnaires, material and media validation sheets, student and teacher response questionnaires, and pretest and posttest sheets. The results of this study indicate that the web-based colloid system teaching materials are very feasible by media experts and material experts with a percentage of 93.13% of media aspect and 86.42% of material aspect, student responses to web-based colloid system teaching materials are in the category of very good with an average percentage of 89.56%. Learning outcomes after using teaching materials developed increased with an average N-gain score of 0.67 on the medium criteria and the teacher's response to web-based colloid system teaching materials was in the very good category with an average percentage an average of 93.23%. PubDate: 2024-06-13 DOI: 10.33369/alo.v8i1.34522 Issue No:Vol. 8, No. 1 (2024)
Authors:Triana Krisandini, Agus Sundaryono, Rina Elvia Pages: 73 - 81 Abstract: Penelitian ini bertujuan untuk mengetahui tingkat kelayakan, respon mahasiswa terhadap suplemen bahan ajar bahan ajar Kimia Organik Bahan Alam (KOBA KIM 413, KD 2) dengan pendekatan STEM’S bebasis android dan hasil belajar mahasiswa setelah menggunakan suplemen bahan ajar tersebut. Penelitian ini dilaksanakan pada bulan Februari-Juli 2020. Model yang digunakan pada penelitian pengembangan ini adalah ADDI (adaptasi dari model ADDIE) yang terdiri dari tahap analisis, perencanaan, pengembangan, penerapan. Penelitian ini dilakukan di Univeristas Bengkulu dengan subjek mahasiswa pendidikan kimia Universitas Bengkulu yang mengambil mata kuliah KOBA TA 2019/2020. Mahasiswa dengan NPM genap berjumlah 9 orang untuk uji coba skala kecil dan mahasiswa dengan NPM ganjil berjumlah 21 orang untuk uji coba skala besar. Instrumen penelitian yang digunakan berupa angket kebutuhan, lembar validasi, angket respon, serta lembar evaluasi. Hasil penelitian ini diperoleh: (1) tingkat kelayakan suplemen bahan ajar dengan pendekatan STEM’S berbasis android, persentase kelayakan dari segi materi yang didapat yaitu 92,86 % dengan kategori sangat layak sedangkan dari segi media yaitu 80,21 % dengan kategori sangat layak sehingga bahan ajar dinilai layak untuk diujicobakan; (2) Hasil uji coba skala kecil didapatkan respon baik dengan persentasi rata-rata 89,75% dengan ada perbaikan; (3) Hasil belajar mahasiswa setelah menggunakan suplemen bahan ajar KOBA didapatkan nilai rata-rata sebesar 57,3 yang masuk pada kategori lulus. sehingga dapat disimpulkan bahwa suplemen bahan ajar cara-cara isolasi dan identifikasi senyawa bahan alam dengan pendekatan STEM’S bebasis android yang telah dikembangkan dapat digunakan sebagai suplemen dalam proses pembelajaran KOBA PubDate: 2024-06-13 DOI: 10.33369/alo.v8i1.34531 Issue No:Vol. 8, No. 1 (2024)
Authors:Friesca Yusa Malinda, Elvinawati Elvinawati, Nadia Amida Pages: 82 - 89 Abstract: This study aims to determine the feasibility and response of students to the developed electronic chemistry module. This development study was adapted from the Borg and Gall me development model which used 7 out of 10 stages which were limited to the product revision stage. The data of this study were obtained from interviews, material and media expert validation questionnaires, student response questionnaires on small-scale product trials. The results of material expert validation showed that the electronic chemistry module developed obtained an average percentage of 85.73% while the results of media expert validation obtained an average percentage result of 87.06% which was in the range of 84% < V 100% with the criteria very valid. In a small-scale product trial to determine student responses to the developed chemistry electronic module, the average percentage of 83,38% % in the range of 68% < V 84% in the good category. It can be concluded that the electronic chemistry module developed in this study is suitable for use as chemistry teaching materials for class X SMK students. Keywords: Chemical Electronics Module, Page Flip Corporate Editions, Acid Base PubDate: 2024-06-13 DOI: 10.33369/alo.v8i1.34555 Issue No:Vol. 8, No. 1 (2024)
Authors:Rani Fitria, Nurhamidah, Dewi Handayani Pages: 90 - 103 Abstract: This study aimed to determine the feasibility level of, students’ response, level of students’ understanding of the electronic module based on creative thinking skills using 3D Page Flip Professional on Hydrocarbon subject at SMAIT IQRA'Bengkulu City. This type of research is R&D (Research and Development) which used 3 of the 4 stages of the 4D (Four D) development model included Define, Design and Development. The data of this study were obtained from a validation questionnaire from material and media experts, the results of small-scale trials, large-scale trial results, student response questionnaires and students' level of understanding of the developed electronic module. The feasibility level of the electronic module is based on material expert validation of 93.18% which states that the quality of the material in the electronic module is feasible from the material aspect and based on creative thinking skills, the validation of media experts is 97.20% which states that the display quality on the electronic module is appropriate from the media aspect, the small scale trial was 92.47% which stated that the discourse on the was easy to understand. Students’ response to the module in the field implementation test was 93.92% which stated that students gave a very good response to the developed electronic module and the level of student understanding based on the N-Gain Score of 0.37 was in the medium category. This showed that the electronic module based on creative thinking skills using 3D Page Flip Professional on hydrocarbon subject is very suitable to be used as teaching material in the learning process. PubDate: 2024-06-13 DOI: 10.33369/alo.v8i1.34469 Issue No:Vol. 8, No. 1 (2024)
Authors:Indah Permata Sari, Febrian Solikhin, Rina Elvia Pages: 104 - 116 Abstract: Penelitian ini merupakan penelitian deskriptif dengan pendekatan kuantitatif bertujuan untuk mendeskripsikan profil keterampilan metakognitif, hasil belajar siswa, dan korelasi keterampilan metakognitif terhadap hasil belajar siswa pada materi hidrokarbon. Penelitian ini dilakukan di SMAN 5 Kota Bengkulu. Subjek penelitian ini adalah kelas XI MIPA 3, XI MIPA 4 dan XI MIPA 5 yang berjumlah 105 siswa yang dipilih berdasarkan teknik purposive sampling dari populasi sebanyak 7 kelas. Pengumpulan data dilakukan dengan cara tes menggunakan instrumen tes tertulis dan non tes menggunakan kuesioner. Analisis data untuk uji korelasi menggunakan aplikasi SPPS 23. Hasil penelitian pada kuesioner keterampilan metakognitif diperoleh sebesar 85,2% yang menunjukkan bahwa keterampilan metakognitif siswa berada pada kategori sangat baik. Aspek keterampilan metakognitif terendah pada bagian keterampilan evaluasi (evaluating skills) diperoleh sebesar 82,8% yang menunjukkan bahwa sebagian siswa belum dapat merangkum apa yang dibuat, belum memahami dalam menjawab persoalan dan kurang teliti dalam memeriksa jawaban yang telah dibaut pada materi hidrokarbon. Hasil penelitian terhadap hasil belajar siswa pada materi hidrokarbon diperoleh bahwa sebanyak 61,90% siswa pada kategori sangat baik, dan 38,10% pada kategori siswa baik. Hasil uji korelasi menunjukkan adanya hubungan yang positif dan signifikan antara keterampilan metakognitif dengan hasil belajarnya yang terlihat dari nilai koefisien korelasi sebesar 0,919 serta nilai sig. (2-tailed) sebesar 0,003. Hal tersebut menunjukkan bahwa korelasi keterampilan metakognitif dengan hasil belajar siswa pada materi hidrokarbon berada pada kategori sangat kuat yang menunjukkan bahwa siswa mampu menuliskan, menyusun serta membedakan berbagai struktur senyawa. PubDate: 2024-06-13 DOI: 10.33369/alo.v8i1.34439 Issue No:Vol. 8, No. 1 (2024)
Authors:Kartika Wahyuni, Hermansyah Amir, Sura Menda Ginting Pages: 117 - 128 Abstract: This study aims to determine the differences in the activities and learning outcomes of students who apply the somatic, auditory, visual, intellectual (SAVI) learning model assisted by android-based teaching materials and practicum. This study uses a quasi-method with research samples of experimental class I used android-based teaching materials and experimental class II applying practicum. The method of data collection was carried out by conducting tests in measuring learning outcomes while the observation sheet of student activities in measuring learning activities. The results of observing the learning activities of students in the experimental class 1 and 2, respectively, are 69% and 74%, both in the active criteria. The cognitive learning outcomes of experimental class 1 and 2 students are 75.76 and 79.61, both in good criteria. There is a significant difference between learning activities and student learning outcomes who are taught by the application of the SAVI learning model assisted by android-based teaching materials and practicum. The results of the study can be concluded that in general the activities and learning outcomes of students with the application of the SAVI learning model with practicum are higher than those with the help of android-based teaching materials. PubDate: 2024-06-13 DOI: 10.33369/alo.v8i1.34440 Issue No:Vol. 8, No. 1 (2024)
Authors:Rahmah Setyadilla, Wiwit Alwi, Nurhamidah Nurhamidah Pages: 129 - 139 Abstract: This research and development aims to (1) produce an E-Module designed with the Canva Application (2) determine the feasibility and response of students to the E-Module being developed. The resulting product is an E-Module which contains on macronutrient and micronutrient elements in sea water. The development model used is the Borg and Gall development model which has been modified by Sugiyono. This development has 10 stages, but in this case the development is limited to stage 7, namely product revision I. The development stages carried out in this research are potential and problems, data collection, product design, design validation, design revision, product testing, and product revision I. This research and development was carried out at Bengkulu University from March to September 2023. The test subjects in this research were students of Chemistry Education Study Program who were taking Marine Chemistry classes for the 2022/2023 academic year and 2023/2024 academic year at Bengkulu University Teacher Training and Education Faculty, totalling 25 people. Data collection was carried out using student needs questionnaires, literature studies, atudent respon questionnaires and product validation sheets. The data obtained are qualitative data in the form of comments and suggestion from validators and respondents, quantitative data in the form of assessment numbers based on a Likert Skala. Quantitative data processing by analyzing product feasibility and analyzing student responses to the E-Module being developed. The result of the media and material validity test respectively were 98,61% and 88,88%. The Student response test result of 84,33%. Based on the results, it was concluded that the E-Module developed was very suitable to use in the classes. PubDate: 2024-06-13 DOI: 10.33369/alo.v8i1.34516 Issue No:Vol. 8, No. 1 (2024)
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