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All Journal Pillar of Physics Education : Jurnal Berkala Ilmiah Pendidikan Fisika Pillar of Physics: Jurnal Berkala Ilmiah Fisika
Putri Diana
Jurusan Fisika, Universitas Negeri Padang, Sumatera Barat, Indonesia
Earth & Planetary Sciences Education Materials Science & Nanotechnology Physics Other

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THE AVAILABILITY ANALYSIS OF 21ST CENTURY SKILL INDICATORS ON PHYSICS WORKSHEET OF SENIOR HIGH SCHOOL GRADE X SEMESTER 1 IN PASAMAN DISTRICTS Putri Diana; Umi Isriyah; Wahyuni Satria Dewi; Akmam Akmam; Silvi Yulia Sari
PILLAR OF PHYSICS EDUCATION Vol 14, No 3 (2021)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (85.35 KB) | DOI: 10.24036/11144171074

Abstract

Worksheets that can help students develop 21st century skills are worksheets that contain indicators of 21st  century skills. Based on the results of preliminary observations made in the field, the student worksheets used by schools in Pasaman District still vary. It is not known whether these various worksheets include indicators of 21st  century skills. Therefore, a study was conducted with the aim of analyzing the 21st  century skill indicator in physics worksheets grade X Semester 1 in Pasaman District.This type of research is a descriptive study with a qualitative approach. The population in this study were all Physics Worksheets grade X Semester 1 used by 12 public Senior High School in Pasaman Districts. Furthermore, for the school sampling technique using purposive sampling technique with schools selected by high category schools, medium category schools and low category schools based on the results of the 2019 National Examination of the total high school population in Pasaman Regency. Meanwhile, the sample of student worksheets in this study used a total sampling technique. The sample of worksheet in this study were 2 worksheet published by publishers which were used the most by schools in Pasaman district, and 3 worksheet made by physics subject teachers. Based on the results of the study, it is concluded that the 21st century skill indicator with the highest 37% is in the LKS Intan Pariwara by Risdiyani Chasanah and friends. Meanwhile, and friends with a proportion of 12% in the category of not facilitating.
Pengaruh komposisi terhadap ukuran butir lapisan nanokomposit CoFe2O4/PVDF dengan metode spin coating (The influence of composition to the grain size of the CoFe2O4 / PVDF nanocomposite layer by using the spin coating method) Diana Putri; Yenni Darvina; - Ramli; - Yulkifli
PILLAR OF PHYSICS Vol 12, No 2 (2019)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (528.445 KB) | DOI: 10.24036/7086171074

Abstract

The study of nanocomposites have been done much by researchers. Nanocomposites is a mixture of nanoparticle powder consisting of two materials called matrix and filler. The filler used in this study is CoFe2O4 and the matrix is PVDF. This study advantageous for investigating the micro structure of CoFe2O4/PVDF nanocomposite layer. The micro structure to be is the size of crystals, the micro strains, the size of grains and the thickness of nanocomposite layers. It is a research experiment that uses variations in composition 10 ml : 10 ml, 10 ml : 20 ml, 10 ml : 30 ml. The characterization tools used were X-ray Diffraction (XRD) and Scanning Electron Microscope (SEM). XRD is used to get the corner of two theta and a half peak width (FWHM) from a layer of nanocomposite. SEM characterization gets to morphology of the surface and the thickness of nanocomposite layers. The thickness of a nanocomposite layer obtained is that 25.11 m, 29.81 m, and 35.51 m. Based of research already done, the more thickness of a nanocomposite layers the size of crystals and micro strains has also increased.
Co-Authors Ramli Ramli Silvi Yulia Sari Solly Aryza Umi Isriyah Wahyuni Satria Dewi Yenni Darvina Yulkifli Yulkifli