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Lensa: Jurnal Kependidikan Fisika
Published by Universitas Pendidikan Mandalika
ISSN : 23384417     EISSN : 26860937     DOI : https://doi.org/10.33394/j-lkf
Core Subject : Science, Education, Social, Engineering,
Astronomy Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Physics
Lensa: Jurnal Kependidikan Fisika (J-LKF) published by the Physics Education Study Program UNDIKMA. J-LKF publishes every 6 months including the study of science and education in the field of physics specifically and natural and applied sciences in general.
Arjuna Subject : Ilmu Sosial - Pendidikan
Articles 15 Documents
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Search results for , issue "Vol 12, No 2: December 2024" : 15 Documents clear
Menentukan Volume Akuifer Air Tanah dengan Metode Geolistrik di Desa Ekas Buana Kecamatan Jerowaru Kabupaten Lombok Timur Rahmatullah, Ovan; Alaydrus, Alfina Taurida; Minardi, Suhayat
Lensa: Jurnal Kependidikan Fisika Vol 12, No 2: December 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v12i2.13917

Abstract

Air tanah merupakan sumber daya alam yang sangat dibutuhkan oleh masayarakat. Penelitian terkait penentuan akuifer air tanah sangat penting guna menunjang kebutuhan masyarakat di Desa Ekas Buana akan ketersediaan air. Kecamatan Jerowaru, Kabupaten Lombok Timur termasuk dalam tujuh kecamatan yang rawan terhadap kekeringan termasuk Desa Ekas Buana. Tujuan penelitian ini adalah untuk mengetahui jenis batuan dan volume batuan yang berpotensi sebagai akuifer di Desa Ekas Buana menggunakan metode geolistrik konfigurasi Schlumberger. Pengolahan data menggunakan software IPI2win untuk mengetahui jumlah lapisan, nilai resistivitas, kedalaman lapisan dan ketebalan lapisan, setelah itu akan diolah menggunakan software Rockworks16 untuk membuat pemodelan 3D. Penelitian ini dilakukan menyebar dengan 15 titik pengukuran. Hasil pengukuran menunjukkan litologi bawah permukaan terdiri dari enam lapisan batuan, yakni tanah penutup atau top soil, pasir lempungan, pasir, lempung, batu kristalin, dan batu gamping. Akuifer pada daerah penelitian terletak pada kedalaman sekitar 45,24 m. Batuan yang diduga sebagai lapisan akuifer adalah batu gamping, pasir, pasir lempungan. Potensi volume total akuifer pada daerah penelitian diperkirakan sebesar 412.400.000 m3 dari volume total 479.440.000 m3.
Effect of Base Material Variations on the Characteristics of Briquettes from Coconut Shell Charcoal and Corncob Mixtures Melenia, Melenia; Ahzan, Sukainil; Pangga, Dwi
Lensa: Jurnal Kependidikan Fisika Vol 12, No 2: December 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v12i2.13305

Abstract

This study investigates the effects of varying base materials, specifically coconut shell charcoal (ATK) and corncob charcoal (ABJ), on the characteristics of biobriquettes. The research employs an experimental method, analyzing the impact of different ATK and ABJ proportions on calorific value, ash content, moisture content, density, and combustion rate. The biobriquettes were produced by mixing coconut shell and corncob charcoal with 10% tapioca starch adhesive, molded into cubes, and dried. The results show that increasing the ATK proportion improves the calorific value, with the highest value of 10,640 calories in briquettes with 90% ATK. In contrast, higher ABJ content results in faster combustion rates but lower energy efficiency, with the lowest calorific value of 6,424 calories in briquettes containing 90% ABJ. The study also highlights that all biobriquettes meet Indonesian National Standards (SNI) for moisture content and calorific value, although only the 90% ATK sample meets the ash content standard. These findings suggest that coconut shell charcoal is a superior biomass material for producing high-performance biobriquettes, with a 90% ATK and 10% adhesive combination yielding the best overall results for sustainable energy applications.
Identifikasi Miskonsepsi Peserta Didik SMA Melalui Tes Diagnostik Four-Tier pada Hukum Newton Silaban, Bajongga; Surbakti, Mariana Br; Silaban, Irving Josafat Alexander; Purba, Jusbinaraya
Lensa: Jurnal Kependidikan Fisika Vol 12, No 2: December 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v12i2.13688

Abstract

Penelitian ini bertujuan untuk: 1) mengembangkan tes diagnostik Four-Tier, 2) mengidentifikasi tingkat miskonsepsi peserta didik, dan 3) menjelaskan faktor-faktor penyebab miskonsepsi pada hukum hukum Newton. Jenis penelitian yang digunakan adalah penelitian pengembangan model Tessmer, dengan terlebih dahulu memvalidasi tes diagnostik Four-Tier tersebut kepada expert review (dosen dan guru ) fisika. Selanjutnya dilakukan uji coba skala kecil pada peserta didik kelas 10 fase-E SMA Batara School Medan sebanyak 13 orang. Setelah dilakukan revisi terhadap hasil uji coba tersebut, selanjutnya dilaksanakan ujicoba skala besar pada peserta didik kelas X fase-E SMA Nasrani 1 Medan sebanyak 23 orang yang tersebar secara heterogen dan penarikan sampel dilakukan  dengan purposive sampling. Hasil tes diagnostik peserta didik dikelompokkan pada 3 kategori, yaitu paham konsep, miskonsepsi, dan tidak paham konsep. Berdasarkan hasil penelitian, rata-rata miskonsepsi peserta didik yang diperoleh sebesar 61,10%. Miskonsepsi paling tinggi terdapat pada konsep gaya berat yakni sebesar 86,36% di mana peserta didik sulit membedakan kosep massa dengan berat. Rata-rata miskonsepsi dalam memahami konsep hukum-hukum Newton dan penerapannya masing-masing 62,98% dan 52,35% tergolong cukup tinggi. Disimpulkan bahwa dengan menggunakan tes diagnostik Four-Tier dapat digunakan untuk mengukur tingkat miskonsepsi peserta didik lebih akurat. 
Integrated Science Learning with Connected Model Based on Ethnoscience to Enhance the Creative Thinking Dimension of Pancasila Student Profile Avifatun, Nur; Firdaus, Firdaus
Lensa: Jurnal Kependidikan Fisika Vol 12, No 2: December 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v12i2.14441

Abstract

This study aims to analyze the effectiveness of integrated science learning using a connected model based on ethnoscience to improve the Pancasila Student Profile, particularly in the creative thinking dimension. A quantitative approach with a quasi-experimental method was employed. The research sample consisted of 30 eighth-grade students from MTs Ma'arif Garung, divided into experimental and control groups. Research instruments included pretests, posttests, observation sheets, and interviews. Data analysis was conducted using t-tests and N-Gain analysis with SPSS software. Results indicated that the average N-Gain score for the experimental class reached 60%, categorized as effective, while the control class scored 42.3%. The t-test yielded a significance value of 0.000 (<0.05) and a t-value of 3.846 (>t-table 2.074), indicating that the ethnoscience-based connected learning model effectively enhanced students' creative thinking skills.
Investigating the Impact of Ethno-Physics Learning on Students’ Critical Thinking Skills Alibar, Muhamad; Prayogi, Saiful; Habibi, Habibi
Lensa: Jurnal Kependidikan Fisika Vol 12, No 2: December 2024
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v12i2.14824

Abstract

This study examines the impact of Ethno-Physics Learning on enhancing students’ critical thinking skills by integrating indigenous cultural knowledge into the physics curriculum. Traditional physics instruction, which often relies on rote memorization and passive learning, has been found insufficient in developing the analytical and problem-solving abilities necessary for both academic achievement and real-world applications. In contrast, Ethno-Physics Learning contextualizes abstract scientific concepts within culturally relevant frameworks, thereby fostering active inquiry and deeper cognitive engagement. Utilizing a quasi-experimental design with non-equivalent control groups, the research involved Grade 10 students from two classes. The experimental group received instruction on the topic of Work and Energy through Ethno-Physics Learning methods, while the control group experienced conventional lecture-based teaching. Both groups underwent pretesting and posttesting to assess their critical thinking skills across various dimensions, including analysis, inference, evaluation, explanation, and decision-making. Statistical analyses, incorporating tests for normality and homogeneity followed by paired samples t-tests, revealed that although improvements were noted in both groups, the experimental group exhibited significantly greater gains in critical thinking abilities. These findings suggest that integrating local ethnoscience into physics education not only makes scientific theories more accessible and meaningful but also cultivates the higher-order cognitive skills essential for effective problem-solving. The study highlights the transformative potential of Ethno-Physics Learning and recommends its incorporation into science curricula to enhance student engagement and learning outcomes in diverse educational settings.

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