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Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika
Published by Universitas Sultan Ageng Tirtayasa
ISSN : 2442515X     EISSN : 25281976     DOI : http://dx.doi.org/10.30870/gravity.vxix
Core Subject : Science, Education,
Astronomy Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics
The focuses of the manuscript received in the Gravity journal is limited to the topic: Physics Education (Media, Educational Policy, Assessment, Learning Model) Theoretical Physics Material Physics Earth and Environmental Physics Astrophysics Medical Physics Computational Physics and Instrumentation
Arjuna Subject : Fisika dan Astronomi - Fisika dan Astronomi (Lain-Lain)
Articles 14 Documents
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Search results for , issue "Vol 1, No 1 (2015)" : 14 Documents clear
Determination of the band gap energy for ternary material Sn-In-Zn-O thin films by electron spectroscopy and ultra-visible spectrometer Yus Rama Denny
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 1, No 1 (2015)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (145.617 KB) | DOI: 10.30870/gravity.v1i1.2487

Abstract

The SnInZnO thin film was prepared at room temperature by RF magnetron sputtering. The band gap of this film was investigated by REELS and UV-Spectrometer analysis. By using REELS with low energy (500 eV) and high energy (1500 eV) electron beams, the surface band gap as well as and the bulk energy band gap were measured. The result shows that the band gaps are affected by the primary electron energies. The transmittance value of 80% in the visible light region has been achieved. The optical band gap was calculated by using Tauc’s relation from UV-Spectrometer analysis and compared to that of the band gap obtained by the REELS spectra.
PEMBELAJARAN KONTEKSTUAL UNTUK MENINGKATKAN KEMAMPUAN PEMECAHAN MASALAH FISIKA Rudi Haryadi
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 1, No 1 (2015)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (41.083 KB) | DOI: 10.30870/gravity.v1i1.2508

Abstract

Tujuan utama penelitian ini adalah untuk memperoleh gambaran mengenai peningkatan kemampuan pemecahan masalah fisika pada mahasiswa yang mendapat pembelajaran dengan pendekatan kontekstual bila dibandingkan dengan siswa yang mendapat pembelajaran konvensional, sikap mahasiswa terhadap pembelajaran dengan pendekatan kontekstual, serta aktivitas mahasiswa dan dosen selama proses pembelajaran dengan pendekatan kontekstual. Penelitian ini merupakan penelitian eksperimen dengan desain kelompok kontrol pretes-postes (pretest-posttest control group design). Dalam penelitian ini, mahasiswa kelompok eksperimen mendapat pembelajaran dengan pendekatan kontekstual sedangkan mahasiswa kelompok kontrol mendapat pembelajaran secara konvensional. Penelitian ini dilaksanakan di Jurusan Perikanan, Fakultas Pertanian, Universitas Sultan Ageng Tirtayasa, Serang, Propinsi Banten. Untuk memperoleh data dalam penelitian ini, maka digunakan analisis secara kuantitatif dan kualitatif. Analisis kuantitatif dilakukan terhadap data hasil pretes dan postes untuk mengetahui perbedaan rerata peningkatan kemampuan pemecahan masalah fisika pada mahasiswa kelas eksperimen dan kelas kontrol. Sedangkan, analisis kualitatif dilakukan untuk menelaah sikap mahasiswa terhadap pembelajaran dengan pendekatan kontekstual serta aktivitas mahasiswa dan dosen selama proses pembelajaran berlangsung. Berdasarkan hasil analisis data, dapat disimpulkan bahwa: (1) Peningkatan kemampuan pemecahan masalah pada mahasiswa yang mendapat pembelajaran dengan pendekatan kontekstual lebih baik daripada mahasiswa yang mendapat pembelajaran konvensional; (2) Sikap mahasiswa terhadap pembelajaran dengan pendekatan kontekstual adalah positif; dan (3) Aktivitas mahasiswa dan dosen selama proses pembelajaran dengan pendekatan kontekstual berlangsung kondusif.
KUALITAS AIR BERDASARKAN UJI KANDUNGAN KLOROFIL-a DI SUNGAI TUTUPAN KECAMATAN JUAI KABUPATEN BALANGAN Aditya Rahman; Sasi Gendro Sari; Beby Rahmayanti
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 1, No 1 (2015)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (93.216 KB) | DOI: 10.30870/gravity.v1i1.2537

Abstract

This research was done to explain the status of the Tutupan River by measuring chlorophyll-a and determining the relation between chlorophyll-a and physical-chemical factors. Purposive sampling method was used to determine water sampling, the measurement of enviromental factors as temperature, water velocity, water clarity, pH and DO, meanwhile parameters as TSS, BOD5, nitrate, nitrite, orthophosphate, was measured in laboratory. Analysis of chlorophyll-a was content used a spectrophotometer. Water samples were taken twice only at April and May, 2014. The results showed the amount of chlorophyll-a in April ranged between 0,13 and 0,77 mg / m³ and in May, it ranged from 0,02 and 0,08 mg / m³. Status of the Tutupan River quality are classified as oligotrofic or low fertility rates with chlorophyll-a content ranged from 0,02 to 0,77 mg / m³. The chlorophyll-a content only closely related to the water temperature in May, with correlatin factor 0,9.
Implementation Of Project Based Learning Through Making A Video As The Alternative Assignment and Its Effect Toward Motivation and Comprehension of Students in SMA MADANIA BOGOR Yuvita Oktarisa
Gravity : Jurnal Ilmiah Penelitian dan Pembelajaran Fisika Vol 1, No 1 (2015)
Publisher : Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (81.221 KB) | DOI: 10.30870/gravity.v1i1.2488

Abstract

This research originated from the interviewing between the researcher as a physics teacher to some students about Physics assignments. Based on the interview, student felt so bored in doing their assignment and have no motivation in finishing it. Because there is no motivation in doing the assignment therefore the understanding of the students could not be increasing. Based on Curtis (2009:1) that motivation of the students could be increased by implementing  Project Based learning (PBL). This research tried to see the influence of PBL toward the motivation and the understanding of the students. In this assignment students are asked to making a video about the application of Newton’s law of Motion in daily Life. From this video students analyzing why do the video can categorize as the application of Newton’s Law of Motion in daily Life. In making the video as the project, students are guided by the rubric, the timeline and also the goal of the project. Students have to finish their project in fifteen days, and teacher scored their project based on two criteria: the contents and presentation. Ten best video would be shown in front of the whole students in an event in the school. To see the understanding and the motivation of the students after finishing the project, the teacher gave the test and also the questionnaire about the project and their comprehension of Newton’s Law of Motion. According to the questionnaire we can see that more than 60% of the students agree that the project can increase their motivation and also their understanding. The increasing of students comprehension can be seen from the test that given to students. From this research we can inferred that project base learning can stimulus student’s motivation and also the understanding. 

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