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PENGGUNAAN MODEL PIMCA BERBASIS MULTI REPRESENTASI PADA PEMBELAJARAN HUKUM I TERMODINAMIKA Putri Winda Sirait; Jeane Cornelda Rende; Satyano Mongan
Charm Sains: Jurnal Pendidikan Fisika Vol 2 No 3 (2021): OKTOBER
Publisher : Program Studi Pendidikan Fisika Jurusan Fisika Fakultas Matematika, Ilmu Pengetahuan Alam, dan Kebumian (FMIPAK), Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (234.745 KB) | DOI: 10.53682/charmsains.v2i3.122

Abstract

This research focused on physics material, the first law of thermodynamics with PIMCA model based on multi-representation. PIMCA (Presentation, Idea Mapping, Conceptualization, Assessment Formative). The purpose of this research is to know the result of students’ learning after taught used PIMCA learning model based on multi-representation on the first law of thermodynamics using SPSS. The method used is One Pre-test-Post-test Design. This research was conducted at SMA N 1 Remboken with 30 respondents. The procedure was start with pre-test then continuing with learning physics by following the four steps of PIMCA model and then ended with post-test. The data that found from the research are: the pre-test’s average is 33,66 and post-test average is 71,48. Generally the students gave positive responses on PIMCA learning model.This research, it can be concluded that there is an enhancement of students’ learning result in learning the first law of thermodynamics. This research makes the students become more active in getting the knowledge and makes them think creatively. The result of the research showed that PIMCA learning model based on multi-representation is very effective to use in learning the first law of thermodynamics.
STUDI EFEK PERMUKAAN SUBSTRAT ITO PADA PROSES DEPOSISI FILM DR-19 DENGAN METODE E-PVD Haryati Lalo; Satyano Mongan; Patricia Silangen
Jurnal FisTa : Fisika dan Terapannya Vol 2 No 1 (2021): APRIL
Publisher : Fakultas Matematika Ilmu Pengetahuan Alam dan Kebumian, Universitas Negeri Manado

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53682/fista.v2i1.102

Abstract

Molecules and polymers with a conjugated chain structure such as the organic molecule Disperse Red-19 (DR-19) have delocalized π-electrons along the conjugation chain of the molecule and are easily moved by external electric fields, so that these materials have a large electrical polarizability and exhibit an optical response. which is quite high and very fast. This research was conducted with the aim of studying the surface effect of the Indium Tin Oxide (ITO) substrate in regulating the molecular orientation of the DR-19 film and the effect of the external electric field (E =1.9 MV/m) in regulating the molecular orientation of the DR-19 film. The fabrication method used is the E-PVD method, namely the PVD (Physical Vapor Deposition) method assisted by an external electric field. ) and the electric field E = 1.9 MV/m. The films were analyzed and characterized using X-ray diffraction spectroscopy (XRD). The XRD characterization results showed that with the help of an external electric field of 1.9 MV / m, the resulting film showed an increased structural order, marked by the formation of a crystalline structure in the DR-19 film. The E-PVD method (PVD method assisted by an external electric field E) is very effective in arranging DR-19 molecules so that the molecules can be arranged in an orderly parallel perpendicular to the surface of the ITO substrate.