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SEARCH: Science Education Research
Published by Institut Agama Islam Negeri Sorong
ISSN : -     EISSN : 30326435     DOI : https://doi.org/10.47945/search.v1i2.1247
Core Subject : Education,
Education Other
Jurnal ini menerbitkan artikel asli tentang isu-isu dan tren terkini yang terjadi secara internasional dalam kurikulum Ilmu Pengetahuan Alam berkaitan dengan pengajaran, pembelajaran, kebijakan, dan persiapan guru IPA dengan tujuan untuk memajukan pengetahuan tentang teori dan praktik pendidikan IPA. Isu pendidikan dan pembelajaran IPA yang dimaksud meliputi pembelajaran Fisika, Kimia, Biologi, pendidikan teknik dan sains terapan.
Arjuna Subject : Ilmu Sosial - Pendidikan
Articles 69 Documents
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Preliminary Evaluation of Alkali–Glycine Pretreatment for Base Metal Leaching from Waste Printed Circuit Boards (PCB) Agita Kaila Warohmah; Yus Rama Denny; Ganesha Antarnusa; Mochamad Reza Firdaus
SEARCH: Science Education Research Journal Vol. 4 No. 2 (2026): April 2026
Publisher : IAIN Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47945/search.v4i2.2962

Abstract

Waste printed circuit boards (PCB) have potential as a secondary source of valuable metals; however, the high content of base metals may hinder the recovery of precious metals, thereby requiring a pretreatment stage. This study aimed to conduct a preliminary evaluation of alkali–glycine pretreatment for base metal leaching from waste printed circuit boards. PCB samples were reduced to a particle size of <2 mm and separated into particle size fractions of −60 mesh and −120 mesh. The pretreatment stage was carried out under alkaline conditions, followed by glycine leaching using a glycine concentration of 30 g/L at pH 11, agitation speed of 300 rpm, and leaching time of 24 h under ambient conditions. Initial characterization was performed using X-Ray Fluorescence (XRF) and Inductively Coupled Plasma (ICP), while leaching filtrates were analyzed using Atomic Absorption Spectroscopy (AAS). The characterization results showed that Cu was the dominant metal with a concentration of 21.775 wt.%, while Au and Ag contents reached 522 ppm and 668 ppm, respectively. Leaching results indicated that Cu and Zn were dissolved in limited amounts, whereas Au was not detected in the filtrate. Cu recovery remained relatively low and showed no significant difference between particle sizes, indicating that particle size reduction under the applied conditions had limited influence on leaching performance. The findings suggest that alkali–glycine pretreatment has potential as an initial step for reducing base metal content prior to precious metal recovery, although further optimization of operating conditions is required to improve leaching efficiency.
Crystal Structure and Lattice Strain Analysis of Pure and Fe3+-Doped TiO2 Nanoparticles with Varied Dopant Concentrations Based on the Sol-Gel Method Anisatur Rofiah; Yus Rama Denny; Rahmat Firman Septiyanto
SEARCH: Science Education Research Journal Vol. 4 No. 2 (2026): April 2026
Publisher : IAIN Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47945/search.v4i2.2968

Abstract

Penelitian ini mengkaji modifikasi struktur mikro nanopartikel TiO2 melalui doping besi Fe3+ dengan variasi konsentrasi (0%, 0,25%, 0,5% dan 1%) menggunakan metode sol-gel. Sampel hasil kalsinasi suhu 450 dianalisis menggunakan X-ray diffraction (XRD). Hasil pengujian menunjukkan seluruh sampel berhasil mempertahankan fase tunggal tetragonal anatase tanpa adanya endapan fase sekunder besi oksida. Penambahan dopan memicu pelebaran nilai FWHM dan pergeseran bertahap pada puncak utama (2 = 25,3) Berdasarkan perhitungan persamaan Scherrer, ukuran kristalit menyusut secara konsisten dari 25,68 nm ke 16,61 nm seiring bertambahnya kadar besi. Sebaliknya, nilai regangan kisi (lattice strain) mengalami kenaikan linear akibat akumulasi distorsi lokal dalam kisi TiO2 dapat disimpulkan bahwa substitusi ion Fe3+ secara efektif mampu menahan pertumbuhan butir dan merekayasa struktur internal material, yang sangat potensial untuk aplikasi fotokatalis maupun sel surya
Development of a Sound Wave E-module to Enhance Grade XI Students’ Critical Thinking Skills: An ADDIE-Based Development Study at SMAN 1 Padarincang Maya Maelani; Rudi Haryadi; Rahmat Firman Septiyanto
SEARCH: Science Education Research Journal Vol. 4 No. 2 (2026): April 2026
Publisher : IAIN Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47945/search.v4i2.2973

Abstract

The development of technology in the digital era requires education to design learning resources that support 21st-century skills, including critical thinking. Critical thinking is important in physics learning because students must interpret phenomena, analyze relationships among variables, evaluate evidence, and draw scientific conclusions rather than merely memorize formulas. Sound wave material is often considered difficult by students because several concepts are abstract and are not sufficiently supported by interactive teaching materials. This study aimed to develop a sound wave e-module, determine its feasibility, examine student responses, and identify its potential to improve the critical thinking skills of Grade XI students at SMAN 1 Padarincang. This research used a Research and Development (R&D) approach with the ADDIE model, limited to four stages: Analysis, Design, Development, and Implementation. The results showed that the e-module achieved a very feasible category based on media expert validation, with percentages of 98%, and material expert validation, with percentages of 93,33%. Student responses were in the very good category, with an average percentage of 86.98%. The mean score increased from 19.31 in the pretest to 26.00 in the posttest, with an N-gain of 0.32, which is categorized as moderate. These findings indicate that the developed sound wave e-module is feasible, practical, and has the potential to support students’ critical thinking skills in physics learning.  
Effectiveness of Think-Pair-Share in a Flipped Classroom for Improving Students’ Cognitive Outcomes on Climate Change Komang Widiani; Desak Made Citrawathi; Ajeng Purnama Heny; Ni Putu Fani Andriani
SEARCH: Science Education Research Journal Vol. 5 No. 1 (2026): SEARCH: Science Education Research Journal
Publisher : IAIN Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47945/search.v5i1.2935

Abstract

Low student engagement and learning readiness remain significant challenges in Biology learning, particularly in the topic of climate change. This study aimed to analyze the effectiveness of the Think-Pair-Share (TPS) learning model integrated with a Flipped Classroom approach in improving senior high school students' cognitive learning outcomes. The study employed a quantitative approach using a quasi-experimental method with a nonequivalent control group design. The sample consisted of 70 tenth-grade students from SMA Negeri 2 Tejakula, who were assigned to experimental and control groups. Data were collected through cognitive achievement tests and student response questionnaires and analyzed using N-Gain, ANCOVA, and Cohen’s effect size. The results showed that the experimental group achieved a higher mean N-Gain score (0,76) than the control group (0,66). ANCOVA results indicated a significant difference in cognitive learning outcomes between the two groups (p < 0,05). Furthermore, the effectiveness test revealed an effect size of 0,642 which is categorized as medium. In addition, students’ responses to the implementation of the learning model were classified as positive across all indicators. These findings suggest that integrating the Think-Pair-Share (TPS) model with a Flipped Classroom approach effectively enhances students’ cognitive learning outcomes and can serve as an alternative instructional strategy for fostering more active and meaningful Biology learning.
The Effectiveness of Discovery Learning in Enhancing Senior High School Students’ Critical Thinking Skills on Heat and Temperature Topics Azzahra Dwi Ryogi Djamil; Rudi Haryadi
SEARCH: Science Education Research Journal Vol. 5 No. 1 (2026): SEARCH: Science Education Research Journal
Publisher : IAIN Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47945/search.v5i1.2992

Abstract

Teachers in 21st-century learning are expected to adapt their teaching to match the demands of that kind of learning. Critical thinking skills are essential competencies in physics learning; however, many students still experience difficulties in anlyzing problems, evaluating information, and drawing conclusions, particularly in heat and temperature topics. Therefore, effective learning models are needed to improve students’ critical thinking skills. This study aimed to determine the effectiveness of the Discovery Learning model in improving students’ critical thinking skills on heat and temperature material. The study employed a quasi-experimental method using a non-equivalent control group design. The participants consisted of 31 students in the experimental class and 31 students in the control class. Data were collected through critical thinking tests and students response questionnaires and were analyzed using N-Gain and the Mann-Whitney U Test. The result revealed that the average n-gain score of the experimental class was 0,5647, while the control class obtained 0,3213, both categorized as moderate. The mann u test showed a significance value of less than 0,0001, indicating a significant difference between the two classes. In addition, student responses reached 82,5%, which was categorized as very good. These findings indicate that the Discovery Learning  model is effective in improving students’ critical thinking skills and can be considered an alternative learning model for physics instruction, particularly in heat and temperatur topics.
Analysis of Gold Concentration and Leaching Efficiency of PCB Waste Using Atomic Absorption Spectroscopy Maulina Wulansari; Yus Rama Denny M; Devi Ayu Nur’aini; Mohammad Nouvaldy
SEARCH: Science Education Research Journal Vol. 4 No. 2 (2026): April 2026
Publisher : IAIN Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47945/search.v4i2.3003

Abstract

Printed circuit board (PCB) waste is a source of valuable metals with high potential for recycling, primarily because it contains relatively high concentrations of gold. This study aims to analyze the gold concentration in the filtrate obtained from leaching PCB waste using atomic absorption spectroscopy (AAS) and to evaluate the leaching efficiency achieved. The study began with sample characterization using Fire Assay and ICP-OES, followed by a pre-leaching process using 65% HNO₃ at 70°C for 60 minutes. The pre-leaching residue was then subjected to leaching using a mixture of 37% HCl and 65% HNO₃ in a 1:3 ratio at 70°C for 90 minutes. The leaching filtrate was analyzed using AAS after dilution: 1 mL of the solution was taken and diluted to 25 mL. The initial characterization results showed that the PCB sample contained 522 ppm of gold from 303.20 grams of PCB sample. AAS analysis revealed a gold concentration of 1.307 ppm in the diluted solution, equivalent to 81,69 ppm in the actual filtrate, with a leaching recovery rate of 34,44%. These results indicate that the leaching process was able to dissolve gold from the PCB matrix into the liquid phase. This study provides preliminary information on the potential for utilizing PCB waste as a source of secondary precious metals through hydrometallurgical methods and can serve as a basis for further research on leaching process optimization and gold recovery.
Crystal Structure Characterization of Fe3O4 Nanoparticles Synthesized via the Co-precipitation Method Using X-Ray Diffraction Siti Fuziyawati Ishak; Yus Rama Denny; Yuvita Oktarisa
SEARCH: Science Education Research Journal Vol. 4 No. 2 (2026): April 2026
Publisher : IAIN Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47945/search.v4i2.3005

Abstract

The use of Fe₃O₄ magnetic iron oxide nanoparticles in various technological applications is on the rise, but their performance is significantly influenced by their phase purity and degree of crystallinity. The coprecipitation method is simple and capable of producing a wide range of crystalline characteristics, thus warranting further investigation. This study aims to identify the crystal structure of Fe₃O₄ nanoparticles synthesised via coprecipitation using X-ray diffraction (XRD). The focus is on determining the crystal phase, identifying the characteristic diffraction patterns of magnetite, and measuring the crystallite size. Synthesis was carried out by mixing Fe³⁺ and Fe²⁺ in a 2:1 ratio using FeCl₃.6H₂O and FeSO₄.7H₂O. Subsequently, 10% NH₄OH was added at 60 °C with continuous stirring at 600 rpm for 90 minutes. Following this, the material was washed seven times and dried at 100 °C for 2 hours. The material was then characterised using XRD. The results of the study showed that Fe₃O₄ nanoparticles were successfully synthesised in the form of a dense black powder. The XRD diffraction pattern showed six distinct magnetite peaks at 2θ angles of approximately 30.2°, 35.6°, 43.3°, 53.2°, 57.3° and 62.7°, corresponding to the crystal planes (220), (311), (400), (422), (511) and (440) according to the JCPDS database. This indicates the formation of a spinel structure with good crystallinity. Furthermore, a small amount of hematite (Fe₂O₃) impurity phase was detected. Calculations using the Debye–Scherrer equation indicate an average crystal size of 10 nanometres. These results demonstrate that the coprecipitation method is effective for producing nano-sized Fe₃O₄ nanoparticles with a well-defined crystal structure, which hold potential for development in various magnetic material applications.
Implementation of Interactive Kahoot! Quizzes on Atomic Structure to Enhance Student Learning Motivation Wahyu Hidayati; Nofri Yuhelman; Rahadian Zainul
SEARCH: Science Education Research Journal Vol. 4 No. 2 (2026): April 2026
Publisher : IAIN Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47945/search.v4i2.3200

Abstract

This study aims to describe the improvement of students' learning motivation in chemistry, specifically on the topic of atomic structure, through the implementation of a series of instructional improvements incorporating the educational game platform Kahoot!. The study was motivated by the low level of student motivation observed during chemistry lessons, both in individual and group activities, which was presumed to be caused by conventional, low-interaction teaching approaches. This research employed a Classroom Action Research (CAR) design following the Kemmis and McTaggart model, comprising two cycles, with each cycle consisting of planning, action, observation, and reflection stages. The subjects were 40 tenth-grade students at SMA Negeri 3 Padang. Data were collected using a learning motivation observation sheet designed to assess seven indicators of student motivation, including student engagement, initiative, communication, collaboration, information-seeking, and respect for peers' contributions. The collected data were analyzed descriptively using percentage calculations, with the results of each cycle used as a basis for reflection and refinement of actions in the subsequent cycle. The results showed an increase in the average percentage of student learning motivation from Cycle I to Cycle II, from 44.72% to 82.6%, exceeding the predetermined minimum target of 75%. This increase is attributed to the cumulative effect of the instructional improvements implemented in Cycle II, in which Kahoot! served as one component alongside increased teacher-student interaction and expanded opportunities for student participation. Based on the observation results across the two cycles, it can be concluded that the combination of these improvements, with Kahoot! as a key gamification element, was associated with an improvement in students' learning motivation in chemistry.
Preliminary Development of an Acid-Base Student Worksheet Based on Guided Discovery Learning Integrated with Ethnoscience to Foster Phase F Students' Critical Thinking Skills Putri Ramadani; Nofri Yuhelman
SEARCH: Science Education Research Journal Vol. 5 No. 1 (2026): SEARCH: Science Education Research Journal
Publisher : IAIN Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.47945/search.v5i1.3243

Abstract

Students' difficulties in understanding acid-base concepts and the limited use of teaching materials that facilitate concept discovery and critical thinking indicate the need for more contextual learning resources. This study aimed to develop a preliminary prototype of an acid-base student worksheet (LKPD) based on Guided Discovery Learning integrated with ethnoscience, designed by incorporating Ennis's critical thinking indicators for Phase F students. The study employed Educational Design Research (EDR) using the Plomp development model and was limited to the preliminary research and prototyping phases. The participants consisted of four chemistry teachers and 60 Phase F students from SMAN 2 Pariaman, SMAN 4 Pariaman, and SMAN 2 Sungai Limau. Data were collected through interviews, questionnaires, literature review, and self-evaluation using interview guidelines, student needs questionnaires, and a self-evaluation checklist. The development process resulted in Prototype II following revisions to Prototype I based on the findings of the self-evaluation. Prototype II integrates Guided Discovery Learning syntax, Minangkabau ethnoscience contexts, and Ennis's critical thinking indicators as the basis for designing systematic learning activities. The resulting Prototype II represents the outcome of the preliminary development phase and is ready for expert validation as the next stage of the development process.

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