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All Journal Lensa: Jurnal Kependidikan Fisika

Dwi Sabda Budi Prasetya

Dosen Program Studi Pendidikan Fisika, FPMIPA IKIP Mataram

Author-ID : 5302128

Astronomy Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Engineering Environmental Science Physics

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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

[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).

DESAIN MEDIA PEMBELAJARAN KOMIK BERBASIS KEARIFAN LOKAL DAN PENERAPANNYA UNTUK MENINGKATKAN AKTIVITAS DAN HASIL BELAJAR Pete Era Restiani; Sukainil Ahzan; Dwi Sabda Budi Prasetya
Lensa: Jurnal Kependidikan Fisika Vol 3, No 1: June 2015
Publisher : Universitas Pendidikan Mandalika

The research is aimed to increase students’ creativity and studenst’ achievement at the seventh grade student of SMPN 1 Praya Timur. The type of this research is classroom actions research in wich the research was conducted in two cycles. Each cycle of the research comprising of three meetings in wich two meetings were planned to have the teaching learning activities and one meeting was specified to have the evaluations of the learning process. At the first cycle, it was found that the average score of the students is 55,10 and the classical acommplishment percentage is 37,95%. Whereas in the second cycle, it was found that the average score of the students 80 in wich the acommplishment percentage is 86,20%. The score of students’ activity at the firts cycle is 3,11 wich can be catagorized into “active” category meanwhile the score of the students’ activity at the second cycle is 3,76 whic is categorized inti “very active” category. Based on the data found in the two cycle of the study, it can be concluded that The Design Of Local Wisdom Based Comic As The Learning Media Can Increase Students’ Activity And Students’ Achievment At The Seventh Grade Students Of SMPN 1 Praya Timur.

PENGARUH PENGGUNAAN MEDIA LABORATORIUM VIRTUAL FISIKA TERHADAP KEMAMPUAN PEMECAHAN MASALAH SISWA Enti Yuyun Darti; Muhammad Fuaddunazmi; Dwi Sabda Budi Prasetya
Lensa: Jurnal Kependidikan Fisika Vol 3, No 2: December 2015
Publisher : Universitas Pendidikan Mandalika

Physics is one of the subjects taunght in SMPN 4 Praya Tengah. The Instructional media which used is still relatively conventional with teaching materials such as text books. This study used a learning media of animation software in a virtual learning environment to enhance the problem solving ability of students. This study was a quasi-eksperimental study. The study also included into the study of population, because the entrie student population used in the study. The data analysis technigue which used was the t-test. The results obtained are tcaculate = 2,87 and ttable = 1,72. because tcaculate its count greater than ttable it can be concluded that there are impact of using the virtual media laboratory of physics to student’s problem-solving abilites.

Co-Authors Ajwar Anas Enti Yuyun Darti Muhammad Fuaddunazmi Pete Era Restiani Sukainil Ahzan

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