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M. Lutfi Firdaus
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M. Lutfi Firdaus
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Bengkulu
INDONESIA
PENDIPA Journal of Science Education
Published by Universitas Bengkulu
ISSN : 20869363     EISSN : 26229307     DOI : -
Core Subject : Science, Education,
PENDIPA Journal of Science Education is a peer-reviewed, open-access journal covered all aspect of science and science education. PENDIPA journal welcomes the submission of scientific articles related to mathematics, physics, chemistry, biology, and its educational implementation in a school, higher education and other educational institution. We encourage scientist, lecturer, teacher and student to submit their original paper to the journal. PENDIPA journal is published by Graduate School of Science Education - University of Bengkulu, three times a year on February, June and October
Arjuna Subject : -
Articles 566 Documents
Pengembangan E-Modul Interaktif Berbasis Case Study Pada Materi Sistem Sirkulasi Darah Untuk Siswa Kelas XI SMA Septia, Adela Eka; Hamidah, Afreni; Sadikin, Ali
PendIPA Journal of Science Education Vol 8 No 3 (2024): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.3.440-448

Abstract

The development of science and technology in Indonesia encourages educational innovation, including the use of technology in learning according to the Independent Curriculum. The printed module used is less effective in visualizing biological processes. This research aims to develop learning media, namely an interactive e-module based on a case study of blood circulation system material, then analyzing the suitability of the media, analyzing teacher and student perceptions of the product that has been developed. This research is development research (Research and Development) using the ADDIE development model which consists of Analyze, Design, Develop, Implement and Evaluation. The types of data for this research are qualitative and quantitative. The data collection instruments used were validation questionnaires from material experts and media experts to determine the suitability of the product, teacher and student perception questionnaires which were distributed to small groups of 6 students and large groups of 27 students. The research results show that case study-based interactive e-modules that have gone through the material validation stage obtained a percentage of 91.6% in the "very feasible" category, while the media validation stage obtained a percentage of 96.25% in the "very feasible" category. The results of the biology teacher's perception obtained a percentage of 91.25%, including in the "very good" category. The perception results of small group trials were 92.29% in the "good" category and large group trials were 93.05% in the "very good" category. So it is concluded that the development of an interactive e-module based on case studies is feasible, practical and effective for use in teaching biology regarding the blood circulation system.
Efektivitas Penggunaan Aplikasi Open Source dalam Pembelajaran Matematika Komputer setiawan, I Made Dedy
PendIPA Journal of Science Education Vol 8 No 3 (2024): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.3.455-462

Abstract

Mathematics is an important aspect in the higher education curriculum, especially in the field of computer science. The role of mathematics such as calculus, algebra and statistics is urgent for current technological developments. So far, computer mathematics learning in INSTIKI classes has not utilized open source-based applications. For this reason, innovation is needed in mathematics learning, one of which is by utilizing the Geogebra application. The aim of this research is to determine the effectiveness of using open source applications in computer mathematics learning. This research follows a quantitative descriptive research design involving a sample of 50 respondents selected purposively. Data was collected using a questionnaire consisting of 20 statement items and divided into three aspects, namely suitability of the material, convenience and attractiveness. The data was then analyzed descriptively quantitatively. The research results showed that from the suitability aspect of the material, the most dominant answer was obtained, namely strongly agree at 57%, from the convenience aspect, the most dominant answer was obtained, namely agree at 43%, while from the attractiveness aspect, the most dominant answer was obtained, namely strongly agree at 54%. From the research results it can be concluded that the use of open source applications is quite effective in learning computer mathematics.
Feasibility of Analytical Thinking Test Instrument: An Analysis of Test Quality and Learner Abilities Using the Rasch Model Nurbaiti, Urai; Afandi; Tenriawaru, Andi Besse
PendIPA Journal of Science Education Vol 8 No 3 (2024): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.3.488-497

Abstract

This study aimed to determine the quality of analytical thinking test instruments and the level of students' abilities through Rasch model analysis. This research used descriptive method with quantitative approach. The sample used amounted to 246 students. The instrument used was an analytical thinking test instrument totaling 9 items in the form of descriptions. Data collection was carried out by testing the test instrument. Data analysis was carried out by Rasch model analysis. The results showed that all items were fit. The level of item difficulty varies consisting of 1 very difficult question, 4 difficult questions, 3 easy questions, and 1 very easy question. Cronbach's alpha value of 0.80 is categorized as good, person reliability value of 0.79 is categorized as sufficient, and item reliability value of 0.98 is categorized as excellent. The level of item difficulty consists of 1 very difficult question, 4 difficult questions, 3 easy questions, and 1 very easy question. Person separation value 1.92 (H = 2.89, rounded to 3) and item separation 6.26 (H = 8.68 rounded to 9). Person measure analysis obtained 114 high ability (46%), 27 medium ability (11%), and 105 low ability (43%). Person fit analysis obtained 178 fits (72%), 2 misfits (1%), and 66 outliers (27%).
Penerapan Model Discovery Learning Pada Materi Gelombang Elektromagnetik Berdasarkan Adsorpsi Congo Red oleh Silika Pasir dengan Metode Spektroskopi Yuliafitri, Sasti; Swistoro, Eko
PendIPA Journal of Science Education Vol 8 No 3 (2024): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.3.498-502

Abstract

This study intended to 1) explain the process of synthesis silica from Bengkulu beach sand; 2) describe pH, weight, contact time, optimum temperature, thermodynamics, isotherms, kinetics of the Congo Red and Remazol Red adsorption process of silica from Bengkulu beach sand using spectroscopic UV-Vis analysis methods. Based on the experiments, the results were 1) The synthesis of  silica from Bengkulu beach sand was carried out through the purification of the sample, the potassium silicate preparation (K2SiO3) by the alkali fussion method, gel making, and the silica gel preparation (SiO2). The optimum adsorption condition of Congo Red substance by silica occurs at pH 2 and the contact time is 40 minutes, while the Remazol Red substance occurs at pH 3 and the contact time is 60 minutes, each adsorbent weight 75 mg and 50 mg, and the optimum temperature 30°C. The thermodynamic parameters acquired are ∆G° and ∆H° are negative, while the ∆S° is positive, which means that the process of adsorption occurs exothermic and spontaneously irregularities towards the increased system. Isotherm adsorption is determined through the Freundlich isotherm model and follows pseudo-order kinetic model 2.
The Use of Telang Flower Extract (Clitoria ternatea L.) as a Natural Universal pH Indicator coupled with Digital Image Colorimetry Esterlin; Nursaadah, Euis; Wardana, Rendy W.; Firdaus, M. Lutfi
PendIPA Journal of Science Education Vol 8 No 3 (2024): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.3.480-487

Abstract

The acid base indicators commonly used by scientists are mostly synthetic indicators that are harmful for the environment.Moreover, chemists need various chemicals to detect broad pH ranges for acid and base samples solution.  The aim of this research was to create a natural universal pH indicator from telang flower (Clitoria ternatea L.) extract coupled with the digital image detection. The universal pH indicator is very important in education chemistry that broadly used for titration and other class room chemical experiments. This process of making a natural universal pH indicator integrated with digital images meets green chemistry criteria that use environmentally friendly materials and technology. The results show that color absorption data at pH 1-2 are purple, pH 3-5 are violet, pH 6-10 are blue, pH 11-12 are green and pH 13-14 are yellow. RGB intensity digital image data shows the intensity of the red color increases in the pH range 6-11, while the intensity of the green and blue colors tends to be stable. The proposed method was validated using a UV-Vis spectrophotometer and conventional pH meter that give the comparable results.
Sains Indonesia: Pengembangan LKPD Berbasis STEM dengan Pendekatan Problem Based Learning terhadap Keterampilan Proses Sains dan Kemampuan Berpikir Kritis pada Pembelajaran IPA Budiyatno; Suseno, Nyoto; Aththibby, Arif Rahman
PendIPA Journal of Science Education Vol 8 No 3 (2024): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.3.470-479

Abstract

This research aimed to develop Student Worksheets based on STEM using a Problem-Based Learning (PBL) approach to enhance students' science process skills and critical thinking abilities in science learning at junior high school SMP Abadi Perkasa. The development model used is ADDIE, which includes five stages: Analysis, Design, Development, Implementation, and Evaluation. Product validation was conducted by experts in language, content, and media, demonstrating good reliability with a Cronbach’s Alpha value of ≥ 0.7. The implementation of the Student Worksheets was carried out with Grade IX students at SMP Abadi Perkasa, and the trials showed a significant improvement in students' skills. The N-gain analysis results reached an average of 0.56, categorized as "moderate," indicating an improvement in students' science process skills and critical thinking abilities. Student response questionnaire data indicated the effectiveness of the Student Worksheets, with an average score of 3.56 and an effectiveness percentage of 89.1%, falling into the "effective" category. The findings of this study suggest that the application of STEM-based Student Worksheets with a PBL approach positively impacts science learning, particularly in the topic of dynamic electricity, by enhancing students' science process skills and critical thinking abilities through a more contextual and interactive learning approach.
PENERAPAN PEMBELAJARAN BERBANTUAN TEKNIK ICE BREAKING PADA MATA KULIAH ALJABAR LINEAR TERHADAP HASIL BELAJAR MAHASISWA Suryati, Kadek; Setiawan, I Made Dedy
PendIPA Journal of Science Education Vol 8 No 3 (2024): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.3.510-516

Abstract

The purpose of this study was to determine the effect of the application of ice breaking technique-assisted learning on linear algebra courses. This type of research was a quasi-experimental research. The subjects of this study were second-semester computer systems engineering students. The research sample technique was taken using the random sampling method. The sample was divided into one experimental class and one control class. For the experimental class, learning with ice breaking techniques will be given and for the control group with conventional learning. By implementing three stages, namely the preparation stage, the implementation stage and the final stage. The data collection method used is documentation and test methods. The types of data collected are primary and secondary data. For the data analysis method, it will be carried out with the help of the SPSS program using the t-test. From the results of the research and data analysis, the test statistic value was obtained as 2.8820 with a significance value of 0.0071 with a significance level of 0.05, indicating that there is an effect of the application of ice breaking technique-assisted learning on student learning outcomes.
Pengaruh Media Pembelajaran VirtualLab Berbasis PBL Terhadap Keterampilan Berpikir Kritis dan Hasil Belajar Materi Sistem Ekskresi Siswa Kelas VIII SMPN 7 Samarinda: - Damayanti, Febby; Maasawet, Eslje Theodora; Tindangen, Makrina; Maria, Vandalitas; Rambitan, Magdalena
PendIPA Journal of Science Education Vol 8 No 3 (2024): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.3.503-509

Abstract

This study aimed to determine the effect of PBL-based virtual lab learning media on critical thinking skills and science learning outcomes on the excretory system material of class VIII students of SMPN 7 Samarinda. This study was quantitative with a Quasi Experiment type of research with a pretest posttest control group research design. In critical thinking skills, the results of the N-Gain test were obtained, namely 0.53 with a moderate category and the results of the t-test with a significance value of 0.000 <0.05. In learning outcomes, the results of the N-Gain test were obtained by 0.72 with a high category and the results of the t-test with a significance value of 0.000 <0.05. Thus, it is concluded that the use of PBL-based virtual lab learning media has a significant effect on critical thinking skills and learning outcomes on the excretory system material of class VIII students of SMP Negeri 7 Samarinda.
Analisis Tingkat Kognitif Soal pada Buku Kemdikbudristek 2022 Materi Teorema Pythagoras Simarmata, Gayus; Simanungkalit, Rich Hunter; Sinabang,  Febrianto Samuel
PendIPA Journal of Science Education Vol 8 No 3 (2024): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.3.517-526

Abstract

The purpose of this study was to determine the distribution of cognitive levels of practice questions and competency test questions on the Pythagorean Theorem material in the Electronic School Book (BSE) for Mathematics for Junior High Schools/Islamic Junior High Schools Class VIII published by the Ministry of Education, Culture, Research and Technology in 2022 based on the Revised Bloom's Taxonomy. The revised Bloom's Taxonomy used is in the cognitive process consisting of: C1-remembering, C2-understanding, C3-applying, for Low Order Thinking Skill (LOTS), C4-analyzing, C5-evaluating, and C6-creating for High Order Thinking Skill (HOTS). This type of research is descriptive research. The data sources taken in this study were practice questions and competency test questions. The practice questions analyzed amounted to 40 questions out of 20 questions, and the competency test questions analyzed amounted to 14 questions out of 10 questions. Based on the results of the analysis for practice questions, it contains 80% LOTS questions, namely C2 questions 30% and C3 questions 50%. HOTS questions 20%, namely question C4. Questions of cognitive levels C1, C5, and C6 were not found. For Competency Test questions, it contains 85.72% LOTS questions, namely question C2 50.00% and question C3 35.72%. HOTS questions 14.28%, question C4 7.14%, question C6 7.14%. Questions C1 and C5 were not found.
Pengembangan Alat Peraga 3D IPA Untuk Melatih Pemahaman Konsep Kelas VII Pada Materi Tata Surya Jantriyani, Jantriyani; Sjaifuddin, Sjaifuddin; Vitasari, Mudmainah
PendIPA Journal of Science Education Vol 8 No 3 (2024): October
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/pendipa.8.3.564-573

Abstract

This research aimed to analyze the level of validity of 3D teaching aids with solar system material, and to analyze students' responses to 3D teaching aids using solar system material to train concept understanding.  The research carried out is a type of research and development using a 4D model. In this research, instruments were used in the form of interview instruments, validation questionnaire instruments and student response questionnaires. The research subjects consisted of three media experts, three material experts, and three practitioner experts (science teachers) as well as 30 class VII middle school students. The results of the validation of 3D teaching aids on the solar system material as a whole obtained a validity percentage from the three experts (media experts, material experts and practitioner experts/science teachers), namely 91.25% in the "Very Good" category and the results of student responses obtained a percentage value of 90. 05 in the "Very Good" category, so that this 3D teaching aid on the solar system material can be a medium in the teaching and learning process.