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Lensa : Jurnal Kependidikan Fisika
Published by IKIP Mataram
ISSN : 23384417     EISSN : 23384417     DOI : -
Core Subject : Science, Education,
Education Physics
Lensa: Jurnal Kependidikan Fisika (J-LKF) published by the Physics Education Study Program Faculty of Mathematics and Natural Sciences (FPMIPA) IKIP Mataram. Contains scientific articles in the form of research and literature. Published every 6 months, including a study of science and teaching in the field of Physics in Indonesian and English.
Arjuna Subject : Ilmu Sosial - Pendidikan
Articles 5 Documents
 1 
Search results for , issue "Vol 6, No 2: December 2018" : 5 Documents clear
Analisis Kandungan Mineral Tembaga (Cu) yang Terdapat pada Struktur Batu Tambang Dengan Metode Atomic Absorption Spectrofotometer (AAS) Bukhari, Imam; Hayati, Susru Hiyatun; Humayroh, Nisa; Ahzan, Sukainil; Prasetya, Dwi Sabda Budi
Lensa : Jurnal Kependidikan Fisika Vol 6, No 2: December 2018
Publisher : IKIP Mataram

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Abstract

[Title: Analysis of Copper (Cu) Mineral Content in the Mining Rock Structure using the Atomic Absorption Spectrophotometer (AAS) Method]. This research was conducted with the aim of: 1) Making chitosan based on local crab shells NTB, 2) Test the absorption of Au ions using chitosan with AAS. This research was carried out using the AAS method, namely by making chitosan from crab shells, Au stock solution which was prepared in the first stage was given chitosan powder and carried out absorption with varying times. Analysis of gold content in Au stocks that have been treated with AAS to determine the remaining Au content and Au absorbed.
Pengembangan Bata Ringan Berbahan Dasar Limbah Pengolahan Emas Tradisional dengan Penguat Eceng Gondok Pangga, Dwi; Prasetya, Dwi Sabda Budi; Ahzan, Sukainil
Lensa : Jurnal Kependidikan Fisika Vol 6, No 2: December 2018
Publisher : IKIP Mataram

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Abstract

[Title: Development of Lightweight Brick Based on Traditional Gold Processing Waste with Water Hyacinth Booster]. Research has been carried out on the manufacture of light brick made from gold processing waste with water hyacinth filler. The study was carried out by varying the direction of water hyacinth fiber as filler in light brick making. The direction of the filler is arranged in a horizontal, orthogonal and random direction. In each filler direction, the percentage variation of water hyacinth is arranged with the volume fraction 0%, 15%, 30%, 45%, 60%, from the total volume of the amount of light brick. The test results show that in the horizontal fiber direction the compressive strength is (2.43; 0.25; 0.54; 0.24; 0.50) MPa with a density (1.62; 1.34; 1.58; 1.42; 1.25) gr /cm3. In orthogonal direction the compressive strength was (2.43; 0.26; 0.80; 0.63; 0.77) MPa with density (1.62; 1.42; 1.49; 1.53; 1.42) gr/cm3. While in the random direction the compressive strength was (2.43; 0.73; 0.69; 0.59; 0.65) MPa with a density (1.62; 1.20; 1.41; 1.13; 1, 20) gr/cm3. From these data by comparing with previous studies, the most stable compressive strength and density values are formed in orthogonal directions. While the density value is most formed in random direction. In all directions the compressive strength and stable density were formed in the 60% volume of filler. The test results show that the light brick that is formed into the category is very light (entered in 0.6 - 1.6 gr/cm3 range) and floating in water, with medium compressive compressive strength.
Penerapan Metode Mindscaping dalam Pembelajaran Fisika sebagai Upaya Meningkatkan Hasil Belajar Siswa Erdawaty, Sri; Hikmawati, Hikmawati; Kosim, Kosim
Lensa : Jurnal Kependidikan Fisika Vol 6, No 2: December 2018
Publisher : IKIP Mataram

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Abstract

[Title: The Implementation of Mindscaping Method in Physics Learning as an Effort to Improve Student Learning Outcomes]. This study aims to improve the activities and outcomes of student physics learning by applying the mindscaping method. This type of research is classroom action research conducted in three cycles. Each cycle consists of planning, action, observation, evaluation and reflection. Student learning activity data is obtained by observation while student learning outcomes data are obtained by giving objective tests at the end of each cycle. The application of the mindscaping method in this study is said to be successful if 85% of students achieve learning outcomes greater or equal to 65, while student learning activities are at least active categories. The results of the study showed an increase in student learning activities each cycle, namely in the first cycle the category was quite active to be very active in the second cycle and in the third cycle. Student learning outcomes can be seen from the classical completeness value which has increased in each cycle, each has a value of 76% in the first cycle, 80% in the second cycle, and 92% in the third cycle. Thus it can be concluded that the application of the mindscaping method has succeeded in increasing the activities and results of student physics learning.
Pengaruh Model Pembelajaran Kooperatif Tipe STAD dan Jigsaw Terhadap Penguasaan Konsep Fisika Detri, Nur Fadilah Aning; Verawati, Ni Nyoman Sri Putu; Rahayu, Satutik
Lensa : Jurnal Kependidikan Fisika Vol 6, No 2: December 2018
Publisher : IKIP Mataram

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Abstract

[Title: The Effect of STAD and Jigsaw Cooperative Learning Model on the Physics Concepts Mastery]. This research aims to determine the influence of cooperative learning model of STAD and Jigsaw type through physics concept mastery of XI grade students in SMAN 1 Kediri. This type of research is the quasi experimental with posttest only control group design. The population of this research is all students of XI grade in SMAN 1 Kediri of 2018/2019 year of lesson with cluster random sampling taking technique. There are two samples that is the class that given treatment by cooperative learning model STAD’s type (class experiment 1) and class that given treatment by Jigsaw’s type (class experiment 2). The result revealed that the mean score of the post-test for concept mastery for two class in row are 73.69 and 61.07. The two class was homogeny and normal disrtribution. The research hypothesis was tested using t-test polled variances. The result showed that the value of ttab was higher than tarith, (2.841>2.021) at 5% as significancy, that mean H0 rejected and Ha received. Based on result of data analysis and discussion, the conclusion are there was an effect between cooperative learning model STAD and Jigsaw type through physics concept mastery of XI grade students in SMAN 1 Kediri.
Penggunaan Eceng Gondok Sebagai Filler untuk Meningkatkan Kuat Mekanik Batako Ringan Berbahan Dasar Limbah Emas Sugianto, Iin; Prasetya, Dwi Sabda Budi; Ahzan, Sukainil
Lensa : Jurnal Kependidikan Fisika Vol 6, No 2: December 2018
Publisher : IKIP Mataram

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Abstract

[Title: The use of water hyacinth as a filler to improve the strength of lightweight brick making based on gold waste]. Research objectives is to testing the compression of lightweight brick. This research was conducted through three stages: Creating lightweight bricks (from waste mining of gold and water hyacinth) horizontally, orthogonally, and randomly. Characterization of the sample as follows: density, and compressive strength. The results show that the best compression analysis at low densities of light bricks horizontally, orthogonally and randomly in compositions: 70% GMW + 30% WH = 0.54MPa, 70% GMW + 30% WH = 1.18MPa, and 85% GMW + 15% WH = 0.73 MPa. Whereas, the density test horizontally, orthogonally, and randomly in composition variations of water hyacinth as follows: 70% GMW + 30% WH = 1.41gr/cm3, 3.40% GMW + 60% WH = 1.89gr/cm3, 85% GMW + 15 WH = 1.20 gr/cm3. It can be concluded that the filler composition is directly proportional to the compressive strength. In addition, the density is inversely proportional to the mass of the lightweight brick.

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