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All Journal Bahana Pendidikan: Jurnal Pendidikan Sains Jurnal Penelitian Pendidikan Jurnal Fisika
Anastasya, agitha
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Education Physics

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Penerapan Model PBL Berbantuan LKPD Pada Pembelajaran Materi Pesawat Sederhana di Kelas VIII Anastasya, agitha; Nawir, Muhammad; Farcis, Fenno
Bahana Pendidikan: Jurnal Pendidikan Sains Vol. 7 No. 2 (2025): Bahana Pendidikan: Jurnal Pendidikan Sains
Publisher : Pendidikan Fisika FKIP UPR

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37304/bpjps.v7i2.15910

Abstract

Rendahnya hasil belajar kognitif dan keterampilan proses sains (KPS) siswa pada materi pesawat sederhana masih menjadi permasalahan dalam pembelajaran IPA di SMP. Pembelajaran yang bersifat konvensional dan kurangnya aktivitas praktikum menyebabkan siswa belum dilatih untuk berpikir kritis, menyelesaikan masalah, serta memahami konsep secara mendalam. Penelitian ini bertujuan untuk mengetahui (1) keterampilan proses sains siswa dan (2) hasil belajar kognitif siswa setelah diterapkan model Problem Based Learning (PBL) berbantuan Lembar Kerja Peserta Didik (LKPD). Penelitian ini menggunakan metode pre-eksperimental dengan desain One Shot Case Study pada siswa kelas VIII di salah satu SMP di Kota Palangkaraya tahun ajaran 2023/2024. Sampel berjumlah 33 siswa dari kelas VIII-3 yang dipilih secara acak. Instrumen penelitian berupa tes KPS dan tes hasil belajar kognitif. Teknik analisis data menggunakan statistik deskriptif persentase untuk menilai keterampilan proses sains dan ketuntasan hasil belajar secara individu, klasikal, dan berdasarkan Tujuan Pembelajaran Khusus (TPK). Uji coba terhadap 40 soal kognitif menghasilkan 35 soal valid dengan reliabilitas 0,87. Hasil penelitian menunjukkan bahwa KPS siswa terdiri dari kategori sangat baik (32,3%), baik (32,3%), cukup (25,8%), dan tidak baik (9,7%). Hasil belajar kognitif menunjukkan bahwa 22 siswa (70,97%) tuntas, sedangkan 9 siswa (29,03%) tidak tuntas. Ketuntasan klasikal belum tercapai karena hanya 70,97% siswa tuntas dari standar ≥75%. Ketuntasan TPK mencapai 75% (18 dari 24 TPK tuntas). Hasil ini menunjukkan bahwa model PBL berbantuan LKPD efektif untuk melatih keterampilan proses sains dan meningkatkan hasil belajar kognitif siswa, serta dapat diimplementasikan sebagai strategi pembelajaran IPA yang kontekstual dan berbasis kompetensi abad ke-21.
Development of Sound-Absorbing Composites Made from Water Hyacinth Waste and Recycled Cardboard Anastasya, Agitha; Widyaningsih, Ayu; Firmansyah, Lucky Fathoni
Jurnal Fisika Vol. 15 No. 2 (2025): Jurnal Fisika 15 (2) 2025
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jf.v15i2.37524

Abstract

Noise is a factor that can disrupt the comfort and effectiveness of daily activities, including learning. To address this issue, this study develops an environmentally friendly sound-absorbing material made from water hyacinth and cardboard, both of which possess natural porosity suitable for acoustic applications. This experimental research aims to determine the sound absorption coefficient of composite materials produced from various combinations of these wastes. Five composite variations were prepared: Sample A (4 g water hyacinth, 4 g cardboard, 8 g matrix), Sample B (5 g water hyacinth, 3 g cardboard, 8 g matrix), Sample C (3 g water hyacinth, 5 g cardboard, 8 g matrix), Sample D (4 g water hyacinth, 4 g cardboard, 9 g matrix), and Sample E (4 g water hyacinth, 4 g cardboard, 7 g matrix). The absorption coefficient was measured using an impedance tube. The results showed that each composition produced different absorption coefficients. Sample D, with a composite-to-matrix ratio of 7:9, had the highest sound absorption coefficient of 0.327 at a frequency of 100 Hz. Meanwhile, Sample E, with a composite-to-matrix ratio of 9:7, had the lowest coefficient of 0.014 at 350 Hz. The findings indicate that water hyacinth and cardboard can be utilized as sound-absorbing materials, with absorption coefficients ranging from 0.01 to 0.32, thereby meeting the ISO 11654 standard.
Analysis of Newton’s Laws Concepts in Besei Kambe: A Traditional Sport of Central Kalimantan Anastasya, Agitha; Rusilowati, Ani; Astuti, Budi
Jurnal Penelitian Pendidikan Vol. 43 No. 1 (2026): April 2026
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jpp.v43i1.40947

Abstract

Besei Kambe is a traditional Dayak game from Central Kalimantan in which two teams compete by pulling a jukung on the water. Beyond its cultural significance, this activity embodies various physics concepts that can be utilized as contextual learning resources. This study aims to identify and analyze the physical principles that emerge during the practice of Besei Kambe, particularly those related to Newton’s laws, action–reaction forces, and resultant forces. Through qualitative analysis based on illustrative observation and literature review, the study reveals that the motion dynamics of the boat and the interactions between the paddlers and the water reflect direct applications of these fundamental physics concepts. These findings indicate Newton’s First Law appears when the boat remains still under balanced forces, Newton’s Second Law when an unbalanced force causes acceleration, and Newton’s Third Law in the action–reaction interaction between the paddle and the water. These findings demonstrate that Besei Kambe naturally represents fundamental mechanics principles and can serve as an effective contextual resource for physics learning grounded in local wisdom.
Co-Authors Ani Rusilowati Budi Astuti Farcis, Fenno Firmansyah, Lucky Fathoni Muhammad Nawir Widyaningsih, Ayu