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All Journal JPMS (Jurnal Pendidikan Matematika dan Sains) Jurnal Penelitian Saintek Jurnal Sains Dasar Journal of Education and Learning (EduLearn) Indonesian Journal of Science and Technology Jurnal Tadris Kimiya Jurnal Penelitian Pendidikan IPA (JPPIPA) Indonesian Journal of Chemistry Jurnal Pengabdian Masyarakat MIPA dan Pendidikan MIPA Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) Jurnal Elemen Kimia Jurnal Pendidikan MIPA
Isana Supiah Yosephine Louise
Universitas Negeri Yogyakarta
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Education Environmental Science Library & Information Science Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Authentic Assessment Instrument on Redox Reactions to Assess Students’ Cognitive Skills Qurratu 'Ainillana; Isana Supiah Yosephine Louise
Jurnal Penelitian Pendidikan IPA Vol 10 No 10 (2024): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i10.8791

Abstract

Authentic assessment is an assessment approach that enable students to demonstrate in-depth understanding and solve complex problem using systematic thinking skills, but teachers find it difficult to develop due to limited knowledge and time. The aim of this research is to produce an authentic assessment instrument for redox reaction materials; determine the characteristics, quality, and feasibility. The instrument development model used was a combination of Oriondo & Dallo-Antonio with Cohen Swerdlik. The development stages were assessment planning, instrument construction, and product testing. The research subjects were 155 of 10th-grade students from three public high schools in Bukittinggi, selected using random sampling technique. Data collection techniques were tests and non-test, the instruments were open ended questions and validation sheets. The authentic assessment instrument developed criteria are: (1) can assess students’ higher order thinking skills; (2) integrate knowledge with skills and various scientific disciplines; (3) develop 21st century competencies; and (4) involve real or everyday life contexts for cognitive aspect. The trial results were analyzed using the PCM 1-PL approach at IRT using Winstep and Parscale program. The characteristics of the item were stated fit because it met the acceptance requirements for MNSQ, ZSTD, and PT-Measure Correlation and the difficulty is in a relatively good level. The reliability of the instrument was classified as good, with test reliability of 0.72 and item reliability of 0.96.
Aplikasi variasi jumlah pelat elektroda Al-Fe pada pengurangan mikroplastik dalam limbah masker secara elektrokoagulasi Marwati, Siti Marwati; Yosephine Louise, Isana Supiah; Padmaningrum, Regina Tutik; Rahmawati, Aprilia; Hamida, Zahra; Julia, Ardhita
Jurnal Penelitian Saintek Vol 28, No 2 (2023)
Publisher : Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jps.v1i2.67098

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh jumlah pelat elektroda Fe-Al pada pengurangan mikroplastik dalam limbah masker secara elektrokoagulasi. Sampel penelitian adalah limbah masker medis. Masker dipotong-potong dengan ukuran 1-5 mm. Potongan masker tersebut direndam dalam aquades selama 7 hari. Cairan yang mengandung mikroplastik dielektrokoagulasi dengan kombinasi pelat elektroda (Al-Fe), (Al-Fe-Al), dan (Al-Fe-Al-Fe) selama 4 jam, arus listrik 2,5 A dan pH 6,0. Serat mikroplastik sebelum dan sesudah elektrokoagulasi diamati dengan mikroskop perbesaran 40 kali. Karakterisasi mikroplastik dilakukan dengan menggunakan FTIR (Fourier Transform Infra Red) dan SEM (Scanning Electron Microscope). Hasil penelitian menunjukkan bahwa efektifitas pengurangan mikroplastik yang dielektrokoagulasi menggunakan kombinasi pelat elektroda (Al-Fe), (Fe-Al-Fe), (Al-Fe-Al-Fe) berturut-turut adalah 82,5; 87,5; dan 90,0%. Semakin banyak jumlah pelat pada elektrokoagulasi mikroplastik dapat meningkatkan efektifitas pengurangan mikroplastik. Gugus fungsi yang terkandung dalam masker sebelum dan sesudah elektrokoagulasi mempunyai kemiripan dengan flok yang dihasilkan. Gumpalan Flok hasil elektrokoagulasi berbentuk variatif dan terdapat serat.Kata kunci: elektroda, elektrokoagulasi, masker, mikroplastik, pelat Fe-Al Application of variation in Al-Fe electrode plates to reduce microplastics in masks waste by electrocoagulationAbstract: This study investigates how the number of Fe-Al electrode plates affects electrocoagu-lation’s effectiveness in decreasing mask waste microplastics. The sample in this study was medical mask waste. The mask is chipped into 1-5 mm pieces. The pieces of the mask are soaked in distilled water for seven days. Liquid-containing microplastics were electrocoagulated with a combination of Fe-Al, Fe-Al-Fe, and Fe-Al-Fe-Al electrode plates for 4 hours at an electric current of 2.5 A and a pH of 7.0. Microplastic fibers before and after electrocoagulation were observed with a forty-fold magnification microscope. Microplastic characterization was carried out using FTIR (Fourier Transform Infra Red) and SEM (Scanning Electron Microscope). The results showed that the effectiveness of electrocoagulation microplastics using a combination of electrode plates (Fe-Al), (Fe-Al-Fe), and (Fe-Al-Fe-Al) was 82.5, 85.0, and 87.5%, respectively. The efficiency of microplastic reduction can be improved by using more plates in microplastic electrocoagulation. The functional groups contained in the masks before and after electrocoagulation are similar to the flocs produced. Floc clumps resulting from electrocoagulation are varied in shape and contain fibers.Keywords: electrocoagulation, electrode, face mask, microplastic
The Effect of PjBL-Based Electronic LKPD Integrated with STEM on Reaction Rate Material on Problem-Solving Ability and Self-Efficacy of Students Halimatuzzahra*, Halimatuzzahra; Louise, Isana Supiah Yosephine; Kamari, Azlan bin
Jurnal Pendidikan Sains Indonesia Vol 13, No 2 (2025): APRIL 2025
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jpsi.v13i2.44858

Abstract

Problem-solving skills can be influenced by the independent curriculum currently used in Indonesia. Merdeka curriculum gives schools the freedom to design learning programs that align with student needs and local conditions. This quantitative research aims to analyze the effect of using electronic student worksheet (LKPD) based on STEM-integrated project based learning (PjBL) on the problem-solving ability (PSA) and self-efficacy of students simultaneously or individually. This research is a quasi-experimental research with a posttest-only control group design. The trial was conducted at SMAN 13 Banjarmasin consisting of one experimental class and one control class selected using a random sampling technique of the class. Data on the PSA and self-efficacy of students obtained from experimental and control classes were analyzed using the Manova test. The results of this study indicate the influence of PSA and student self-efficacy simultaneously and respectively. The effective contribution to PSA and self-efficacy of students simultaneously is 0.419 in the very large category. In addition, the effective contribution to students' PSA is 0.225, and to students' self-efficacy is 0.379, both of which fall into the very large category.
Implementation of Project-Based Learning in Improving Students' Problem-Solving in Chemistry Learning: A Systematic Literature Review Halimatuzzahra, Halimatuzzahra; Louise, Isana Supiah Yosephine
Jurnal Pendidikan MIPA Vol 26, No 2 (2025): Jurnal Pendidikan MIPA
Publisher : FKIP Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jpmipa.v26i2.pp810-822

Abstract

One of the 21st-century skills that needs to be developed is problem-solving. Problem-solving ability is understanding problems, planning solutions, applying solutions, evaluating, and finding solutions to problems. In fact, problem-solving ability in chemistry learning is still low, so a strategy is needed to overcome this problem, one of which is the application of project-based learning. Project-based learning is a learning model that involves students directly in the learning process through research activities. This study aims to evaluate the effect of implementing the Project-Based Learning (PjBL) model on students' problem-solving skills in learning chemistry. The method used is a Systematic Literature Review (SLR). Articles were obtained from Google Scholar, Scopus, and DOAJ, and 9 articles met the inclusion criteria set and were analyzed further. The results of the analysis show that the PjBL model has a positive influence on students' problem-solving skills. Project-based learning allows learners to be creative, work together, and develop solutions within a particular time, improving their collaboration, communication, and critical thinking skills. Implementing PjBL also provides a more interesting and realistic learning experience, helping learners understand the learning material and practice practical skills. Overall, implementing PjBL shows positive results in achieving chemistry learning objectives in cognitive, affective, and psychomotor domains.      Keywords: chemistry learning, problem-solving, project-based learning.
Isotherm and Kinetic Studies of Malachite Green by NaOH-Activated Carbon Made from Apple Waste Balasubramaniam, Narayani; Louise, Isana Supiah Yosephine
Indonesian Journal of Chemistry Vol 25, No 4 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.104046

Abstract

Using textile dyes that seem to reach new heights has caused the waste produced to skyrocket. One is malachite green, which earned its popularity due to its vibrancy. However, the impact of malachite green has proven to be an adversary to the environment, aquaculture, and health. This experiment aims to analyze the removal of malachite green through adsorption by using activated carbon made from apple waste. Some activated carbon underwent activation with NaOH 0.5 M. We sieved these activated carbons into a 100 mesh and used the batch method to test them for optimal conditions. The concentration at equilibrium was analyzed using cyclic voltammetry. The results of these experiments are modeled into isotherm and kinetics models to help describe the adsorption. SEM-EDS, FTIR, and SAA also characterized the adsorbent samples. We found the NaOH-activated carbon to be the most efficient adsorbent, with optimum conditions of 0.3 g, 20 min, and 200 ppm. The adsorption data followed the Dubinin-Radushkevich isotherm and the pseudo second-order kinetics.
Pengaruh Praktikum Green Chemistry terhadap Keterampilan Proses Sains dan Kesadaran Lingkungan pada Materi Faktor Laju Reaksi Kamilah, Izza; Louise, Isana Supiah Yosephine
Jurnal Pendidikan Matematika dan Sains Vol. 13 No. Special_issue (2025): Integrasi Pendidikan Matematika dan Sains dalam Mendukung Sustaina
Publisher : Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jpms.v13iSpecial_issue.89688

Abstract

Penelitian ini bertujuan untuk membandingkan keterampilan proses sains dan kesadaran lingkungan antara siswa yang mengikuti praktikum green chemistry dengan siswa yang mengikuti praktikum konvensional sesuai yang diterapkan di sekolah secara simultan dan terpisah, serta mengetahui sumbangan efektifnya pada materi faktor laju reaksi. Jenis penelitian adalah quasi-eksperimen dengan posttest-only. Teknik pengambilan sampel menggunakan cluster random sampling. Instrumen penelitian meliputi soal uraian dan lembar observasi keterampilan proses sains, serta angket kesadaran lingkungan. MANOVA digunakan pada analisis data penelitian ini. Hasil penelitian menunjukkan perbedaan yang signifikan terhadap keterampilan proses sains dan kesadaran lingkungan antara siswa yang mengikuti praktikum green chemistry dengan yang mengikuti praktikum konvensional. Praktikum green chemistry memberikan sumbangan efektif sebesar 29,3% secara simultan, 4,7% terhadap keterampilan proses sains, dan 28,3% terhadap kesadaran lingkungan. Penelitian ini juga mendukung Sustainable Development Goals (SDGs) mengenai pendidikan berkualitas melalui penguatan keterampilan proses sains, serta konsumsi dan produksi yang bertanggung jawab, melalui praktik laboratorium ramah lingkungan.
Pengembangan Instrumen Penilaian Kemampuan Pemecahan Masalah dalam Konsep Perhitungan Kimia Rubiati, Sri; Louise, Isana Supiah Yosephine
Jurnal Penelitian Pendidikan IPA Vol 11 No 8 (2025): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i8.11990

Abstract

Measuring students' abilities through assessment instruments correctly is very useful so that teachers can guide students effectively. The development of assessment instruments often does not follow formal and scientific preparation steps, so that valid instruments are needed and measurements of problem-solving abilities can produce accurate and correct measurements. Problem solving is a complex activity involving broad objectives in the form of understanding problems, developing strategies, implementing strategies and interpreting results. This study aims to develop an assessment instrument for problem solving skills and to determine the characteristics of the problems solving skills assessment instrument in the concept of chemical calculations. This study uses a 4D development model consisting of the define, design, develop and disseminate stages. The test subjects in this study were 210 high school students. The results of the study showed that: The assessment instrument developed was in the form of 13 descriptive questions arranged based on indicators of problems solving skills; The assessment instrument fits the Rasch PCM 1-PL model in the range of 0.84 logit - 1.16 logit (valid), the reliability estimate is 0.62 reliable category and the level of difficulty of the questions - 0.38 logit to 1.00 logit (good category).
Co-Authors Ade Kurnia Putri Tanjung Adilah Afikah Balasubramaniam, Narayani Daud - Dakabesi Daud Dakabesi Dhaulika Maysarrah Eli Rohaeti Endang Widjajanti Laksono FX Erny Rohayu Faiz Ilham Pratama Febri Saputri Felix Arie Setiawan Halimatuzzahra*, Halimatuzzahra Halimatuzzahra, Halimatuzzahra Hamida, Zahra Heru Pratomo Heru Pratomo Al Heru Pratomo Al Irfan Kamaludin Syam Iva Yuni Astuti Ixora Sartika Mercuriani Julia, Ardhita K.H. Sugiyarto Kamari, Azlan bin Kamilah, Izza Karlinda Karlinda Kristian Handoyo Sugiyarto Kun Sri Budiasih Marwati, Siti Marwati Nur Abdul Goni Nur Elisa Hawa T Tarkin Nur Fitriyana Nurfina Aznam Nurul Fitriana Qurratu 'Ainillana Rahmawati, Aprilia Rasamimanana Joronavalona Regina Tutik Padmaningrum Retno Arianingrum Rubiati, Sri S. Sulistyani Shinta Setya Wilujeng Siti Marwati Sukisman Purtadi Sulistyani Sulistyani Sunarto Sunarto Suwardi Suwardi Suyanta Suyanta Wika Rinawati