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Nur Islami
Physics Education, University of Riau
Education Physics Social Sciences

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HOW GOOGLE EARTH CALCULATES THE DISTANCE Nur Islami
Jurnal Geliga Sains: Jurnal Pendidikan Fisika Vol 5, No 1 (2017)
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (872.354 KB) | DOI: 10.31258/jgs.5.1.41-46

Abstract

Google Erath is a very useful application in the field of geology, geography and even in the field of social sciences. This article is an explanation on how Google Earth calculates the distance of a location to another location. When a position above the surface of Google Earth is determined, the latitude and longitude and altitude will be visible. To be able to calculate the distance of two locations requires the conversion of both locations for latitude, longitude and altitude into position x, y and z, where z coordinates is the average elevation measured from the sea surface. This conversion uses the basic science of spherical geometry and coordinate system. By using the manual calculation between the Rector building of Univeritas Riau in Pekanbaru to Monas in Jakarta, the distance of two locations is obtained of 954,239.5 m. The result of the conversion and distance calculation with this concept shows the value of almost equal to the distance measurements made by Google Erath which amounted to 953,065.1 m with the difference of around 0.123%. For the other 4 locations the percentage difference is almost equal to the average of 0.173%.
IMPROVING THE UNDERSTANDING OF CONCEPTS OF MOMENTUM AND IMPULS OF STUDENTS BY IMPLEMENTATION OF EVIDENCE BASED LEARNING MODELS IN CLASS X SENIOR HIGH SCHOOL Ullya Muflihatin; Nur Islami; Fakhruddin Z
Jurnal Geliga Sains: Jurnal Pendidikan Fisika Vol 7, No 2 (2019)
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jgs.7.2.138-145

Abstract

 This research aims to describe and find out the increase in students' understanding of concepts in the indicators of translation, interpretation, and extrapolation in class X SMA 9 Pekanbaru by applying evidence based learning (EBL) learning models to the momentum and impulse material. This type of research is a quasi experimental. The research population was students of class X SMA 9 Pekanbaru in the Academic Year 2018/2019. The research sample consisted of 2 classes totaling 72 students, of which the experimental class X IPA3 and the control class X IPA6. Research data based on posttest scores understanding the concept of momentum and impulse material, obtained after the implementation of the learning model is given. Data were analyzed descriptively and inferentially to see an increase in students' understanding of concepts. The results of data analysis obtained an increase in students' understanding of the concept of class X IPA3 reaching 71.73% with the category of understanding the average concept is good, while the results of inferential analysis, there is a significant increase in understanding of the concept of momentum and impulse material. Thus, the application of evidence based learning models is effective in increasing students' understanding of concepts in the material momentum and impulses in class X3 SMA 9 Pekanbaru.
EFFECTIVENESS OF PHENOMENON BASED LEARNING (PHENOBL) MODEL APPLICATION FOR IMPROVING STUDENT LEARNING RESULTS IN OPTICAL MATERIALS Tesa Liantika Putri; Azizahwati Azizahwati; Nur Islami
Jurnal Geliga Sains: Jurnal Pendidikan Fisika Vol 6, No 1 (2018)
Publisher : Program Studi Pendidikan Fisika FKIP Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (213.078 KB) | DOI: 10.31258/jgs.6.1.53-59

Abstract

The learning process of physics at school, the topics is sometime less relatedto the existing dailylife phenomenon.This condition causes low improvement of students' cognitive learning result. In this case, it was a necessary to apply a learning model to improve student learning result by applying phenomenon based learning model (PhenoBL). Quasi experiment in the form of nonequivalent control group design as the model of the research. The instrument to collect data used test of student cognitive at pretest and posttest, respectively. The Data was analyzed by descriptive and inferential analysis. The results of descriptive analysis show the average absorption rate of experiment class is 71.05% and control class is 63.33% which both classes are in a good category. In the paired sample t-test results stated an increasing of students cognitive learning outcomes from pretest to posttest. This can also be seen from the inferential analysis in that means there was a significant differences between experimental class and kontrol class. Thus, it can be concluded that the use of PhenoBL model can improve student learning outcomes of class XI MIPA SMA Negeri 5 Pekanbaru on optical material.
Co-Authors Azizahwati Azizahwati Fakhruddin Z Tesa Liantika Putri Ullya Muflihatin