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All Journal Jurnal Pendidikan Fisika dan Teknologi Jurnal Ilmiah Profesi Pendidikan
Wani, Candra
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Education Physics

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Pengaruh Model Problem Based Learning Berbantuan PhET Simulations Terhadap Kemampuan Berpikir Kritis Siswa Pada Pembelajaran Fisika Wani, Candra; Gunada, I Wayan; Taufik, Muhammad; Sholehah, Hijriat
Jurnal Ilmiah Profesi Pendidikan Vol. 10 No. 3 (2025): Agustus
Publisher : Fakultas Keguruan dan Ilmu Pendidikan, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jipp.v10i3.3895

Abstract

Berpikir kritis merupakan kemampuan penting dalam menghadapi tantangan kompleks di era modern saat ini. Dalam proses pembelajaran dibutuhkan model pembelajaran yang bisa membentuk kemampuan berpikir kritis siswa. Penelitian ini bertujuan untuk mengetahui pengaruh model Problem Based Learning (PBL) berbantuan PhET Simulations terhadap kemampuan berpikir kritis siswa pada pembelajaran fisika kelas XI. Jenis penelitian ini adalah penelitian quasi experiment Populasi pada penelitian ini yaitu suluruh siswa kelas XI MIPA. Pengambilan sampel dilakukan dengan teknik Purposive Sampling dan diperoleh siswa kelas XI-E KMMI sebagai kelas eksperimen dan siswa kelas XI-F KMMI sebagai kelas kontrol. Kelas eksperimen diberikan perlakuan berupa model Problem Based Learning dengan barbantuan PhET Simulations, sedangkan kelas kontrol menggunakan model konvensional. Hasil analisis data menunjukkan bahwa rata-rata kemampuan berpikir kritis siswa kelas eksperimen 51,500, sedangkan kelas kontrol yaitu 43,750. Uji hipotesis dilakukan menggunakan uji-t polled varians menghasilkan nilai thitung sebesar -2,209 dengan ttabel sebesar -2,019 dengan taraf signifikansi sebesar 5%. Analisis data menunjukkan thitung berada pada area negatif dan lebih kecil dari ttabel, maka Ho ditolak dan Ha diterima, menunjukkan adanya perbedaan signifikan antara dua kelas tersebut. Berdasarkan temuan ini, dapat disimpulkan terdapat pengaruh model Problem Based Learning dengan berbantuan PhET Simulations terhadap kemampuan berpikir kritis siswa pada pembelajaran fisika di MAS. DI. PI Nurul Hakim tahun ajaran 2024/2025.
The Effect of Adding Ketapang Fruit Ash on the Physical and Mechanical Properties of Geopolymer Concrete Based on High-Calcium Fly Ash Type C with Alkali Activator Martiana, Rina; Liza, Sofia Afsa; Wani, Candra; Hilmayati, Sri; Astuti, Alpiana Puji; 'Ardhuha, Jannatin
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 10 No 2 (2024): July - December
Publisher : Department of Physics Education, Universitas Mataram

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Abstract

This study aims to analyze the effect of adding ketapang fruit ash on the physical and mechanical properties of geopolymer concrete based on high-calcium fly ash type C with an alkali activator. The research methods included chemical composition analysis of fly ash using X-Ray Fluorescence (XRF) and the preparation of concrete samples with varying concentrations of ketapang fruit ash (1%, 1.6%, 2.3%) and water content (3.6%, 3.0%, 2.3%), as well as curing durations (7, 14, and 28 days). The XRF analysis results revealed that fly ash from the Jeranjang Power Plant belongs to Class C, with major components being SiO₂ (34.8%), Fe₂O₃ (23.7%), CaO (23.0%), and Al₂O₃ (11.0%). Physical property tests indicated that the mass of concrete types I, II, and III remained relatively stable at 7, 14, and 28 days, although a slight decrease in mass was observed for concrete type I after curing, with a final mass of 6.8 kg. This decrease was attributed to environmental factors, composition, and rapid water evaporation. Mechanical property tests demonstrated a significant increase in compressive strength across all concrete samples as the concentration of ketapang fruit ash increased. The highest compressive strength was achieved by concrete type III with a ketapang fruit ash concentration of 2.3%, reaching 200 MPa at 7 days, 225 MPa at 14 days, and 270 MPa at 28 days. Furthermore, the addition of ketapang fruit ash improved the concrete's resistance to water penetration. These results suggest that incorporating ketapang fruit ash is an effective alternative for enhancing the quality of geopolymer concrete for structural applications.
Co-Authors 'Ardhuha, Jannatin Astuti, Alpiana Puji Hilmayati, Sri I Wayan Gunada Liza, Sofia Afsa Martiana, Rina MUHAMMAD TAUFIK Sholehah, Hijriat