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Muhammad Asy'ari
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Program Studi Pendidikan Fisika, FSTT Universitas Pendidikan Mandalika Jl. Pemuda No. 59A Mataram, 83125
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Lensa: Jurnal Kependidikan Fisika
Published by Universitas Pendidikan Mandalika
ISSN : 23384417     EISSN : 26860937     DOI : https://doi.org/10.33394/j-lkf
Core Subject : Science, Education, Social, Engineering,
Astronomy Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Physics
Lensa: Jurnal Kependidikan Fisika (J-LKF) published by the Physics Education Study Program UNDIKMA. J-LKF publishes every 6 months including the study of science and education in the field of physics specifically and natural and applied sciences in general.
Arjuna Subject : Ilmu Sosial - Pendidikan
Articles 6 Documents
 1 
Search results for , issue "Vol 5, No 2: December 2017" : 6 Documents clear
Pengembangan Modul Berbasis Masalah untuk Meningkatkan Keterampilan Berpikir Kreatif Siswa Mita Soviana; Syifa’ul Gummah; L Habiburahman
Lensa: Jurnal Kependidikan Fisika Vol 5, No 2: December 2017
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (545.252 KB) | DOI: 10.33394/j-lkf.v5i2.137

Abstract

[Title: The Development of Problem Based Modules to Improve Students' Creative Thinking Skills]. This study aimed to produce a module of physics-based on problems to improve students creative thinking skills. The development model used in this study was ADDIE. This research was conducted in second-grade students of SMP Muhammadiyah Mataram. Data analysis was used qualitative descriptive analysis. The results of this research show that the module rating by validator 1 was 3.28 which criteria into very valid and validator 2 was 3.34 which criteria into very valid. Module practicability was analyzed by the implementation of learning with 3 observers. The assessment by observer 1 was 3.75 very good, observer 2 was 3.75 very good, and observer 3 was 3.79 very good with the criteria of the excellent module assessment. The result of the research shows the students response when used the module was 3.7 is strongly agreed criteria and 3.07 is agreed criteria. The effectiveness of used the module in improving the students creative thinking skills earned an average score of 79.5 with creative criteria. So, it can be concluded that the use of module physics-based problems can be developed feasible used in the learning process.
Pembuatan Kitosan dari Cangkang Udang sebagai Adsorben Emas (Au) Indra Jaya; Joni Syaputra; Dwi Sabda Budi Prasetya; Dwi Pangga
Lensa: Jurnal Kependidikan Fisika Vol 5, No 2: December 2017
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (553.627 KB) | DOI: 10.33394/j-lkf.v5i2.140

Abstract

[Title: Making Chitosan From Shrimp Cup As Gold (Au) Adsorben]. This study aims to make chitosan from shrimp shell as golden adsorbent. Stages of chitosan preparation include demineralization stage using 1,5M HCL, deproteination stage using 3.5% NaOH to obtain chitin powder, then followed by chitin deacetylation stage using 60% NaOH to produce an anime that is chitosan. Subsequently, the chitosan obtained was characterized, analyzed functional group with FTIR and determined its adsorption capacity against Au metal ion, Au content in the sample before and after adsorption was measured using AAS. The results showed chitosan characterization as follows: rendeman 45.83%, have powder texture, white colour, odourless, have moisture content 1.55%, perfectly soluble in glacial acetic acid 2% and purple positive with ninhydrin solution showed chitin has turned into chitosan. Based on calculations from the results of the resulting chitosan FTIR data has a degree of deacetylation 71.17%. From the result of analysis by using AAS that chitosan obtained able to adsorb Au metal from concentration 8.55 ppm decrease until 5,09 ppm with adsorption percentage equal to 40.46%.
Pembuatan Filter Penangkap Emas (Au) Menggunakan Kitin dan Kitosan dari Cangkang Kepiting Ajwar Anas; Sukainil Ahzan; Dwi Sabda Budi Prasetya
Lensa: Jurnal Kependidikan Fisika Vol 5, No 2: December 2017
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (649.358 KB) | DOI: 10.33394/j-lkf.v5i2.133

Abstract

[Title: Manufacture of Gold (Au) Capture Filters Using Chitin and Chitosan from Crab Shells]. This study aims to analyze the ratio of absorption capacity between chitin, chitosan and chitin-chitosan mixture from crab shells as a Gold catcher filter (Au). The preparation of chitin and chitosan from crab shells begins with demineralization using 1.5 M HCl, deproteination using 3.5% NaOH and deacetylation using 60% HCl. Chitosan that formed characterized and analyz ed its ability to absorb gold using AAS (Atomic Absorbsion Spectroscopy). The result of analysis using AAS showed that chitin was able to absorb 67.76%, chitin-chitosan mixture 83.57% and chitosan 87.82%. The result showed that chitosan had better absorption percentage to Gold (Au).
Pengembangan Multimedia Flash pada Materi Energi untuk Meningkatkan Motivasi Belajar Siswa Riska Purnamasari; Sukainil Ahzan; Baiq Azmi Sukroyanti
Lensa: Jurnal Kependidikan Fisika Vol 5, No 2: December 2017
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (405.144 KB) | DOI: 10.33394/j-lkf.v5i2.135

Abstract

[Title: Development of Flash Multimedia on Energy Materials to Improve Student Learning Motivation]. This study aims to develop flash multimedia on energy materials to improve student learning motivation. This study is a development research with ADDIE model. Flash multimedia validation involves 2 validators (media experts and media design experts). Validation results show on the aspect of the material with a score of 3.6 with the category "high validity" and the media aspect with a score of 3.4 with the category "high validity". The flash multimedia implementation (trial run) conducted on the 28 students of grade VIII in SMP Negeri 1 Lenangguar, Sumbawa. The results of the implementation showed the students 'motivation before using flash media with the average score of 2.47 with the category "less agree", and after using flash media with average score 3.41 with category "very agree". So it show an increase of student learning motivation. Thus the developement of flash media have eligibility to be used as a medium in learning physics of energy subject matter
Implementasi Perangkat Pembelajaran Fisika Berbasis Pembelajaran Inkuiri dengan Strategi Konflik Kognitif untuk Melatihkan Kemampuan Berpikir Kritis Muhammad Asy’ari
Lensa: Jurnal Kependidikan Fisika Vol 5, No 2: December 2017
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (365.659 KB) | DOI: 10.33394/j-lkf.v5i2.512

Abstract

[Title: Implementation of Physics Learning Tools Based on Inquiry Learning with Conflict Cognitive Strategies to Facilitate Critical Thinking Ability]. This study aims to implement physics learning device based on inquiry with conflict cognitive strategy to facilitate student’s critical thinking on the fluid material. The device is implemented in the first semester students of Physics Education Study Program IKIP Mataram academic year 2017/2018 with test design using one group pre-test post-test design. Data collection methods used were questionnaires, tests, and observations, while data analysis techniques used qualitative and quantitative descriptive analysis. The results of the implementation obtained some findings, namely: learning activities can be done well with the high degree of reliability. Student response to learning is very positive with the interest of students to follow the learning. The students' critical thinking skills after the experimentally developed learning tools are critically developed. Based on the results of this study can be concluded that learning tools that are implemented practical, and effectively used to facilitate students' critical thinking skills.
Pengaruh Pendekatan Saintifik Terhadap Keterampilan Berpikir Kritis Siswa Baiq Azmi Sukroyanti; Ika Sufianti
Lensa: Jurnal Kependidikan Fisika Vol 5, No 2: December 2017
Publisher : Universitas Pendidikan Mandalika

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (495.608 KB) | DOI: 10.33394/j-lkf.v5i2.136

Abstract

[Title: The Effect of Scientific Approaches Toward Students' Critical Thinking Skills]. This study aims to determine the influence of scientific approach toward the critical thinking skills of students. Indicator of critical thinking skills provides a simple explanation, build skills, conclude, provide further explanation, and set the strategies an tactics. Design in this study was quasi-experimental with posttest only control group design. The population of the study was all of the students class VII SMPN 16 Mataram. The samples of the study consist of two class, that was experiment and control, which is experiment class was taught using scientific approach and control class was taught using conventional methods. The instrument of the study was a description test of critical thinking skill. Data postest show the average of creative thinking skill in the experimental class is 72,32% categorized well while for the control class is equal to 62,67% categorized quite well. The analysis data found tcount 3,28 and ttable 1,67 (the significant level of 5%). The result shows that there was an effect of a scientific approach toward critical thinking skills of the students in vibration and waves material.

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