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Development of Virtual Laboratory Electronic Student Worksheet Using PjBL to Improve Critical Thinking Ability Julianti, Beti; Haryadi, Rudi; Oktarisa, Yuvita
Islamic Journal of Integrated Science Education (IJISE) Vol. 2 No. 1 (2023): March
Publisher : Program Studi Tadris IPA, Fakultas Tarbiyah (IAIN) Kediri, Indonesia

The use of virtual laboratories is a solution for schools that have not been able to carry out practical activities directly. This study aims to develop virtual laboratory electronic student using PjBL which can improve students' critical thinking ability. The research method used is the research and development (R & D) method with the ADDIE development model (analysis, design, development, implementation, & evaluate). The research subjects used were 30 students of class XII IPA who were selected using a purposive sampling technique. Data collection instruments consist of expert validation sheets, student response questionnaires, and critical thinking ability tests (pretest and posttest). The data analysis techniques used are Likert scale and n-gain analysis. The evaluation of the feasibility of electronic student worksheet by the expert got an average percentage of 85.41% with a very valid category, student test results got a n-gain value of 0.38 with a moderate improvement category, and the results of student responses got an average percentage value of 91.35% in the very good category. Thus, the developed virtual laboratory electronic student worksheet using PjBL can Improve students' critical thinking ability

Development of Virtual Laboratory Electronic Student Worksheet Using PjBL to Improve Critical Thinking Ability Julianti, Beti; Haryadi, Rudi; Oktarisa, Yuvita
Islamic Journal of Integrated Science Education (IJISE) Vol. 2 No. 1 (2023): March
Publisher : Program Studi Tadris IPA, Fakultas Tarbiyah (IAIN) Kediri, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30762/ijise.v2i1.885

The use of virtual laboratories is a solution for schools that have not been able to carry out practical activities directly. This study aims to develop virtual laboratory electronic student using PjBL which can improve students' critical thinking ability. The research method used is the research and development (R & D) method with the ADDIE development model (analysis, design, development, implementation, & evaluate). The research subjects used were 30 students of class XII IPA who were selected using a purposive sampling technique. Data collection instruments consist of expert validation sheets, student response questionnaires, and critical thinking ability tests (pretest and posttest). The data analysis techniques used are Likert scale and n-gain analysis. The evaluation of the feasibility of electronic student worksheet by the expert got an average percentage of 85.41% with a very valid category, student test results got a n-gain value of 0.38 with a moderate improvement category, and the results of student responses got an average percentage value of 91.35% in the very good category. Thus, the developed virtual laboratory electronic student worksheet using PjBL can Improve students' critical thinking ability

The Effect of Chitosan Addition on Phase Composition and Detection Sensitivity of Fe3O4/Chitosan Magnetic Label Nanoparticles Based on Giant Magnetoresistance Sensor Prayoga, Galih Aji; Oktarisa, Yuvita; Antarnusa, Ganesha; Fitriani, Nur Shabrina; Aryani, Refi Meilia; Suherman, Andri; Guntara, Yudi
Journal of Energy, Material, and Instrumentation Technology Vol 5 No 4 (2024): Journal of Energy, Material, and Instrumentation Technology
Publisher : Departement of Physics, Faculty of Mathematics and Natural Sciences, University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jemit.v5i4.282

This study describes how phase composition affects the ability of giant magnetoresistance (GMR) chip-based sensors to detect magnetic labels made of Fe3O4 and Fe3O4/chitosan that were synthesized using the co-precipitation method. X-ray diffraction (XRD) analysis revealed that the synthesized nanoparticles were a mixture of magnetite and maghemite phases. The most intense diffraction peak at 2θ = 35.6° (311) confirmed the presence of the magnetite phase. The addition of chitosan significantly increased the proportion of the maghemite phase from 10% to 25%, with the appearance of an additional peak at 2θ = 33° (221). The modification of Fe3O4 nanoparticles into Fe3O4/chitosan nanocomposites resulted in changes in sensor sensitivity. The GMR sensor successfully detected Fe3O4 and Fe3O4/chitosan magnetic labels within 30 seconds with high sensitivities of 0.746 and 0.761 mV/( g/mL), respectively. The limit of detection (LOD) was also very low at 0.419 and 0.428 g/mL. These findings show that Fe3O4/chitosan nanocomposites integrated GMR chip-based sensors can be a dependable instrument for detecting a variety of biomolecules such as Bovine serum albumin (BSA).

Analisis Kesulitan Siswa Dalam Memahami Konsep Percepatan Sentripetal dan Gaya Sentripetal Menggunakan Dua Metode Pembelajaran Berbeda Junitasari, Junitasari; Oktarisa, Yuvita; Septiyanto, Rahmat Firman
DIFFRACTION: Journal for Physics Education and Applied Physics Vol 6, No 2 (2024)
Publisher : Pendidikan Fisika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37058/diffraction.v6i2.10293

Pemahaman konsep merupakan salah satu kunci dalam keberhasilan siswa belajar fisika. Dengan pemahaman konsep yang baik maka siswa dapat memecahkan permasalahan dalam soal dengan baik pula. Penelitian ini bertujuan untuk menganalisis kesulitan siswa dalam memahami percepatan sentripetal dan gaya sentripetal menggunakan dua metode berebeda dan faktor penyebab kesulitannya. Dalam hal ini peneliti menggunakan platform video YouTube sebagai media dalam mengetahu kesulitan siswa dalam memahami materi. Penelitian ini menggunakan metode kualitatif dengan desain deskriptif kualitatif. Penelitian dilakukan kepada 30 siswa kelas 11 MIPA 2 SMAN 1 Panggarangan dengan memberikan tes tertulis berupa pilihan ganda beralasan dan wawancara terhadap 10 orang siswa yang dipilih berdasarkan kategori nilai. Sebelum dilakukan wawancara, siswa diminta untuk menonton video YouTube mengenai percepatan sentripetal dan gaya sentripetal. Hasil penelitian menunjukkan bahwa kedua video tersebut belum mampu membuat siswa menjadi paham konsep dari perceatan sentripetal dan gaya sentripetal, masih banyak konsep yang belum mereka pahami seperti besaran kecepatan linear dan keceatan sudut, arah dari percepatan sentripetal dan gaya sentripetal, penurunan rumus percepatan sentripetal dan gaya sentripetal, alasan mengapa percepatan sentripetal dan gaya sentripetal mengarah ke pusat dan mengapa arah kecepatan linear menyinggung lintasan. Dari hasil tersebut dapat disimpulkan bahwa pemahaman siswa terhadap konsep gaya sentripetal dan percepatan sentripetal masih rendah. Faktor internal yang mempengaruhi terjadinya kesulitan adalah belum memahami konsep, minat belajar fisika dan kondisi fisik. adapun faktor eksternal penyebab kesulitan belajar berdasarkan hasil penelitian adalah pembelajaran daring, manajemen waktu kurang baik dan lingkungan belajar.Kata kunci: Gaya sentripetal, percepatan sentripetal, kesulitan belajar, pemahaman konsep.

Game Fisika Fluidy untuk Meningkatkan Minat Belajar Siswa pada Materi Fluida Statis Alfarouqy, Ahmad Haekal; Septiyanto, Rahmat Firman; Oktarisa, Yuvita
DIFFRACTION: Journal for Physics Education and Applied Physics Vol 6, No 1 (2024)
Publisher : Pendidikan Fisika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37058/diffraction.v6i1.10299

Kurangnya minat siswa dalam pembelajaran fisika di sekolah akibat pembelajaran yang jarang menggunakan media pembelajaran dan cenderung monoton menjadi latar belakang dilakukannya penelitian ini. Tujuan penelitian ini adalah membuat media pembelajaran yang layak, melihat respon siswa terhadap media pembelajaran yang dibuat dan mengetahui pengaruh dari media yang dikembangkan terhadap minat belajar fisika siswa. Metode penelitian yang digunakan adalah Research and Development (RD) dengan model pengembangan 4D yang terdiri dari beberapa tahapan yaitu Define, Design, Develop dan Disseminate. Hasil penelitian menunjukkan bahwa produk media pembelajaran Fluidy memperoleh persentase sebesar 92% dalam kategori "sangat layak" berdasarkan validasi ahli materi dan media, lalu persentase sebesar 88% dalam kategori "sangat layak" berdasarkan hasil angket respons peserta didik. Selain itu, berdasarkan nilai standar gain sebesar 0,39 dengan kategori "sedang" membuktikan bahwa media pembelajaran Fluidy dapat meningkatkan minat siswa dalam pelajaran fisika. Dari hasil ini, dapat disimpulkan bahwa media pembelajaran Fluidy layak dan dapat digunakan untuk meningkatkan minat siswa dalam belajar fisika.

Analisis Kesulitan Siswa Dalam Memahami Konsep Materi Momentum Dan Impuls Di SMA Muhammadiyah Kota Serang Paramitha, Devitriana Putri; Oktarisa, Yuvita; Antarnusa, Ganesha
Jurnal Ilmiah Wahana Pendidikan Vol 10 No 24.2 (2024): Jurnal Ilmiah Wahana Pendidikan
Publisher : Peneliti.net

Show Abstract | Download Original | Original Source | Check in Google Scholar

This research was conducted to find out the difficulties experienced by class XII students of SMA Muhammadiyah Serang City in understanding the concepts of momentum and impulse. This research uses a qualitative method with a population of class XII who have studied momentum and impulse material, then the sample is all students of class From the results of written tests and interview tests, it was found that the learning difficulties and lack of understanding of concepts experienced by students came from not paying attention when the material was given, as well as misperceptions when working on questions, and a lack of use of the correct formula equation for each quantity being calculated or searching for.

Development of Virtual Laboratory Electronic Student Worksheet Using PjBL to Improve Critical Thinking Ability Julianti, Beti; Haryadi, Rudi; Oktarisa, Yuvita
Islamic Journal of Integrated Science Education (IJISE) Vol. 2 No. 1 (2023): March
Publisher : Program Studi Tadris IPA, Fakultas Tarbiyah dan Ilmu Keguruan, Universitas Islam Negeri (UIN) Syekh Wasil Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30762/ijise.v2i1.885

The use of virtual laboratories is a solution for schools that have not been able to carry out practical activities directly. This study aims to develop virtual laboratory electronic student using PjBL which can improve students' critical thinking ability. The research method used is the research and development (R & D) method with the ADDIE development model (analysis, design, development, implementation, & evaluate). The research subjects used were 30 students of class XII IPA who were selected using a purposive sampling technique. Data collection instruments consist of expert validation sheets, student response questionnaires, and critical thinking ability tests (pretest and posttest). The data analysis techniques used are Likert scale and n-gain analysis. The evaluation of the feasibility of electronic student worksheet by the expert got an average percentage of 85.41% with a very valid category, student test results got a n-gain value of 0.38 with a moderate improvement category, and the results of student responses got an average percentage value of 91.35% in the very good category. Thus, the developed virtual laboratory electronic student worksheet using PjBL can Improve students' critical thinking ability

MODIF (Modul Digital Flipbook) Berbasis Multi Representasi untuk Meningkatkan Literasi Sains pada Materi Gerak Lurus Tiaroh, Tiaroh; Haryadi, Rudi; Oktarisa, Yuvita
JURNAL PENA EDUKASI Vol 12, No 1 (2025): April 2025
Publisher : Smart Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54314/jpe.v12i1.2538

Abstract: This research was motivated because many students still struggle with reading graphic or pictorial questions. In addition, the low scientific literacy, according to the PISA score, is also the background of this research. This study aimed to determine the level of feasibility, practicality and effectiveness of the digital flipbook module based on multi-representation to improve the scientific literacy skills of grade XI students in straight motion material. This R&D research uses the ADDIE model. This research was completed with a final percentage result of 80.9%, which was categorized as feasible. This research was conducted through five stages: analysis, design, and development. Implementation and evaluation. The validation of material experts obtained results of 81.8% with a very feasible category, media validation of 84.1% with a very feasible category, validation of question instruments of 78.7% with a viable category, N-Gain of 84.5% with a very effective category, and student responses of 75.6% with a practical category.Keywords: module; multi-representation; scientific literacy. Abstrak: Penelitian ini dilatarbelakangi karena banyaknya peserta didik yang masih kesulitan saat membaca soal grafik maupun bergambar. Selain itu, rendahnya literasi sains menurut skor PISA juga menjadi latar belakang dalam penelitian ini. Tujuan penelitian ini yaitu untuk mengetahui Tingkat kelayakan, kepraktisan serta keefektifan dari modul digital flipbook berbasis multi representasi untuk meningkatkan kemampuan literasi sains peserta didik kelas XI pada materi gerak lurus. Metode pada penelitian ini menggunakan desain R&D dengan model ADDIE. Penelitian ini telah selesai dikembangkan dengan hasil akhir persentase rata-rata sebesar 80,9% yang dikategorikan layak. Penelitian ini dilakukan melalui lima tahapan, yaitu analisis, perancangan, pengembangan. Implementasi, dan evaluasi. Persentase uji kelayakan diperoleh hasil sebesar 81,8% dengan kategori sangat layak, validasi media sebesar 84,1% dengan kategori sangat layak, validasi instrumen soal sebesar 78,7% dengan kategori layak, persentase keefektifan berdasarkan skor N-Gain sebesar 84,5% dengan kategori sangat efektif, dan persentase kepraktisan dari hasil respon siswa sebesar 75,6% dengan kategori praktis.Kata kunci: literasi sains; modul; multi representasi.

Rainfall and Temperature Analysis for Predicting Drought-Prone Areas in Tangerang Regency Oktarina, Silsa Dwi; Ruhiat, Yayat; Oktarisa, Yuvita
Lensa: Jurnal Kependidikan Fisika Vol 13, No 1: June 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v13i1.15818

Drought has emerged as a critical issue in Tangerang Regency, Banten Province, primarily driven by the prolonged dry season, declining rainfall, and rising temperatures above average, all of which are exacerbated by the El Niño phenomenon. These conditions pose serious threats, including water shortages, reduced agricultural productivity, and the potential for widespread drought if left unaddressed. This study aims to map drought threat levels at the sub-district scale based on rainfall and temperature parameters. The integration of these two variables is essential, as drought is influenced not only by insufficient rainfall but also by elevated temperatures. Thus, a multivariable approach offers a more comprehensive and accurate spatial assessment. The analysis applied in this study involves scoring and overlay techniques for each contributing parameter. The results identify areas with varying degrees of drought threat—low, light, moderate, high, and extreme. Notably, 27.63% of the regency is classified under extreme drought risk, predominantly in the central to southern regions, due to the combination of very low rainfall and very high temperatures. The resulting drought threat map serves as a crucial reference for local governments, farmers, and the Regional Disaster Management Agency (BPBD) in planning effective mitigation strategies, early warning systems, and sustainable water resource management.

Rainfall and Temperature Analysis for Predicting Drought-Prone Areas in Tangerang Regency Oktarina, Silsa Dwi; Ruhiat, Yayat; Oktarisa, Yuvita
Lensa: Jurnal Kependidikan Fisika Vol. 13 No. 1: June 2025
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v13i1.15818

Drought has emerged as a critical issue in Tangerang Regency, Banten Province, primarily driven by the prolonged dry season, declining rainfall, and rising temperatures above average, all of which are exacerbated by the El NiÃ±o phenomenon. These conditions pose serious threats, including water shortages, reduced agricultural productivity, and the potential for widespread drought if left unaddressed. This study aims to map drought threat levels at the sub-district scale based on rainfall and temperature parameters. The integration of these two variables is essential, as drought is influenced not only by insufficient rainfall but also by elevated temperatures. Thus, a multivariable approach offers a more comprehensive and accurate spatial assessment. The analysis applied in this study involves scoring and overlay techniques for each contributing parameter. The results identify areas with varying degrees of drought threatâ€”low, light, moderate, high, and extreme. Notably, 27.63% of the regency is classified under extreme drought risk, predominantly in the central to southern regions, due to the combination of very low rainfall and very high temperatures. The resulting drought threat map serves as a crucial reference for local governments, farmers, and the Regional Disaster Management Agency (BPBD) in planning effective mitigation strategies, early warning systems, and sustainable water resource management.

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