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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 113 Documents
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The Effect of Mind Mapping Media toward Physics Concepts Understanding Anafitriani, Anafitriani; Sukroyanti, Baiq Azmi; Herayanti, Lovy
Lensa : Jurnal Kependidikan Fisika Vol 7, No 1: June 2019
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (327.467 KB) | DOI: 10.33394/j-lkf.v7i1.1903

Abstract

Science learning carried out by teachers mostly uses conventional methods and rarely uses media in the activities of their teaching and learning process. Media mind mapping in physics learning can be used to describe a lot of material and can package it to be more interesting. The aim of this research to determine the effect of mind mapping media toward the students? concept understanding. This study used quasi-experimental research with pretest and posttest control group design. The population used was all students of class X in SMA Negeri 1 Lingsar at 2018/2019 Academic Year. The number of samples are 32 students for the experiment class and 33 students for the control class taken by purposive sampling technique. Data analysis technique used is the t-test using IBM SPSS Statistics 22. Based on the results of hypothesis testing (t test), it is known that the significance value of the posttest data (0.00) is smaller than alpha testing (0.05), so it can be stated that the mind mapping learning method influences the students' understanding of concepts.
Implementation of POE Learning Model with Worksheets Assistance to Improve Students’ Activities and Learning Outcomes Fatwadi, Agus; Gummah, Syifaul; Prasetya, Dwi Sabda Budi
Lensa : Jurnal Kependidikan Fisika Vol 7, No 1: June 2019
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (359.198 KB) | DOI: 10.33394/j-lkf.v7i1.1907

Abstract

The purpose of this study is to improve the students? activity and learning outcomes through the implementation of the POE learning model with the assistance of student worksheets. The research subjects were 22 students? grade of VIII SMP Negeri 4 Batukliang Utara. This type of research is classroom action research (CAR), which is carried out in two cycles. Each cycle consists of four stages, namely planning, implementation, observation/evaluation, and reflection. The implementation of the POE learning model is carried out through three stages, namely Predict, Observe, and Explain stages. The measured variable is the activity and learning outcomes on the subject matter of Motion. Research data collection techniques using observation sheets and tests. The results of the study in Cycle I obtained an average score of student learning activities is 2.08 with the category of quite active and the average value of students? learning outcomes is 73.41 with classical completeness of 54.55%. In cycle II the average score of students? learning activities is 2.95 with the actively category and the average learning outcome is 83.41 with a classical completeness of 86.36%. Based on the results of the study it was found that the implementation of the POE learning model with the worksheets assistance could improve the students? activities and learning outcomes grade of VIII SMPN 4 Batukliang Utara.
Effect of Scientific Approach toward Students' Critical Thinking Skills Triyani, Triyani; Herayanti, Lovy; Gummah, Syifaul
Lensa : Jurnal Kependidikan Fisika Vol 7, No 1: June 2019
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (326.68 KB) | DOI: 10.33394/j-lkf.v7i1.1906

Abstract

The role of education is to improve the quality of education, especially in producing high-quality students. High-quality students are those who are able to think critically, creatively, logically and take initiatives in responding to issues in society caused by the impact of the development of science and technology. This study aims to determine the effect of a scientific approach to students' critical thinking skills. This study is an experimental research with one group pretest-posttest design. The sample of this study consisted of one class (28 students), which was treated using a scientific approach. Critical thinking skills are measured using a test instrument and then analyzed statistically (t test). Hypothesis test results indicate that there is an effect of using a scientific approach toward students' critical thinking skills.
The Effect of Inquiry Learning Model with Pictorial Riddle Method on Students' Creative Thinking Ability Wardani, Aulia Rahma; Gummah, Syifaul; Ahzan, Sukainil
Lensa : Jurnal Kependidikan Fisika Vol 7, No 1: June 2019
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (342.359 KB) | DOI: 10.33394/j-lkf.v7i1.1905

Abstract

This study aims to determine the effect of inquiry learning models with pictorial riddle methods on students' creative thinking abilities. This research is a quasi-experimental (Quasy Experiment) with Nonequivalent Control Group Design. The research sample consisted of two classes, namely class X IPA 2 and class X IPA 3, each of which amounted to 30 students. The creative thinking ability test instrument consisting of 12 items and observation sheets was used to collect data in this study. The results of the study were analyzed using SPSS v-22 software for windows. The results showed that: 1) the average initial test scores of the experimental and control classes were 45.7 and 44.1 respectively; 2) the average initial test scores of the experimental and control class were 79.2 and 68.8 respectively; 3) homogeneity prerequisite tests show homogeneous data and normality tests show normally distributed data; 4) t-test results obtained Sig. (2-tailed) posttest data (0.00) is smaller than alpha testing (0.05), so the working hypothesis (Ha) is accepted. Thus, the inquiry learning model with the pictorial riddle method influences students' creative thinking abilities.
SYNTHESIS AND CHARACTERIZATION OF TIO2 SEMICONDUCTOR DOPED BY AGNO3 AND THEIR APPLICATION AS PHOTOANODE IN DYE-SENSITIZED SOLAR CELLS Ali Umar, Marjoni Imamora; Faizil, Nanda; Umar, Akrajas Ali; Saad, Siti Khatijah Md
Lensa: Jurnal Kependidikan Fisika Vol 8, No 1: June 2020 (in Press)
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v8i1.2728

Abstract

The use of Titanium dioxide (TiO2) semiconductors in Dye-Sensitized Solar Cells (DSSC) devices have been extensively studied and synthesized with various techniques to obtain optimal performance. The TiO2 semiconductors with optimal performance are influenced by the growth method, the time of growth, the shape of the microstructure, and the optical properties. In this study, it was reported about the effect of silver nanoparticles (AgNO3) doping onto TiO2 semiconductors on their microstructure, reflectance, and efficiency of the DSSC device. The synthesis of TiO2 was carried out using liquid phase deposition (LPD) and immersed into an AgNO3 solution with a variation of time namely 0.5 h, 1 h, 2 h, 4 h, and 6 h. The entire TiO2 + AgNO3 sample, then used as a photoanode on DSSC with plastisol as a counter electrode. Characterization of microstructure, reflectance, and DSSC performance was carried out by using field emission scanning electron microscopy (FESEM), Uv-Vis Spectrophotometer, and Gamry Instrument, respectively. The FESEM results show that AgNO3 has successfully grown on the ITO substrate in a spherical shape with an average particle diameter ranging from 1.52-2.29 ?m. From observations using the Uv-Vis Spectrophotometer, obtained the energy band gap values ranged from 0.22 to 2.27 eV. The best results of DSSC device efficiency, with TiO2+AgNO3/Dye/Plastisol structure, have resulted in the Voc of 0.694 V, current density (Jsc) of 0,943 mA/cm2and fill factor (FF) of 43,50% which is obtained at sample 1.
THE EFFECT OF THE INQUIRY LEARNING MODEL ON STUDENTS’ METACOGNITION AWARENESS Hidayat, Samsun; Asy'ari, Muhammad; Muhali, Muhali; Sukaisih, Roniati
Lensa: Jurnal Kependidikan Fisika Vol 7, No 2: December 2019
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v7i2.2049

Abstract

This study aims to determine the effect of inquiry learning models on the students? metacognition awareness in senior high school. Metacognition awareness in this study consists of eight components, namely (1) declarative knowledge, (2) procedural knowledge, (3) conditional knowledge, (4) planning, (5) information management system, (6) monitoring, (7) evaluation, and (8) debugging. This research is a quasi-experimental research with one group pretest-posttest design. The sample in this study were 25 students of science in Madrasah Aliyah Negeri 3 Lombok Tengah chosen using the saturated sample technique. Metacognition Awerness Inventory (MAI) is used to collect metacognition awareness data of students who are analyzed using paired t-test and Wilcoxon test samples. The results showed that students' metacognition awareness for all indicators was stated to increase (p <0.05) after learning using inquiry learning models. Based on these results, it can be concluded that the inquiry learning model influences the metacognition awareness of secondary school students.
ANALYSIS OF THE ABILITY OF JUNIOR HIGH SCHOOL STUDENTS TO SOLVE THE PHYSICS PROBLEMS IN VARIOUS FORMS OF PROBLEM REPRESENTATIONS Sutirta, I Wayan Gede; Muslimin, Muslimin; Pasaribu, Marungkil
Lensa: Jurnal Kependidikan Fisika Vol 8, No 1: June 2020 (in Press)
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v8i1.2682

Abstract

This research is a descriptive study with a qualitative approach, which aims to describe the ability of junior high school students to solve physics problems in various forms of problem representation. The subjects in this study were the IX grade junior high school students in six Palu city schools. Respondents for interviews in the study amounted to 4 people for each form of problem representation, with the criteria of students who answered right, students who answered ± 50% correct, students who answered incorrectly, and who did not answer. The instrument used was a test of problem solving skills and interviews. The data obtained were analyzed qualitatively including data reduction, presenting data and verification while descriptive analysis was performed by calculating the total score, calculating the percentage and categorizing problem solving abilities. The results obtained by the average ability of junior high school students to solve physics problems in various forms of problem representation 21.86% (less category), with the percentage of each form of representation ie verbal representation 36.09% (less category), image/picture representation 23.78% (less category), diagram representation 19.47% (poor category) and graphic representation 8.10% (poor category).
THE EFFECT OF THE GIVING QUESTION GETTING ANSWERS MODEL THROUGH EXPERIMENTAL METHODS ON PHYSICS MOTIVATION AND LEARNING OUTCOMES Sutrio, Sutrio; Sahidu, Hairunisyah; Yulianti, Farizah
Lensa: Jurnal Kependidikan Fisika Vol 7, No 2: December 2019
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v7i2.2199

Abstract

The aim of this research is to know the impact of the applying Giving Question Getting Answers model with experimental methods toward the learning motivation and result of physics learning. The type of research used was quasi-experimental with posttest only control group design. The population was all student of grade XI in senior high school 1 of  Labuapi. The sampling technique used saturation sampling, while the sample are class XI MIA 1 as the experimental 1 class, and the XI MIA 2 as experimental 2 class. Experimental 1 class was treated with giving question getting answers learning model with experimental methods and experimental 2 class was treated with giving question getting answers learning model without experimental methods. The instrument of motivation learning was used motivation questionnaire and instrument the result of physics learning used multiple choice test. The research hypothesis was tested using Manova-test, data analysis shows that Sig. <0,05 which mean that H0 was rejected and Ha accepted. Thus, it can be concluded that there are effect of Giving Question Getting Answers model with experimental methods on student?s motivation and physics learning result.
LEARNING TOOLS WITH INQUIRY MODELS INTEGRATED OF CHARACTER EDUCATION Azmi, Irham; Jufri, A. Wahab; Makhrus, Muh.
Lensa: Jurnal Kependidikan Fisika Vol 8, No 1: June 2020 (in Press)
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v8i1.2750

Abstract

This study aimed to describe the characteristics and validity of learning tools with inquiry models integrated of character education that is used in learning at junior high school level. The intended learning tools include syllabus, lesson plans, teaching materials, student worksheets, and scientific creativity test instruments. This research is an evaluative descriptive study that describes the characteristics and evaluates the quality of the validity of learning tools. The learning tools validation process involves three validators who validate the learning tools on aspects of content validity and construct validity. The validation results show that the validator's assessment of the learning framework developed in the aspects of content validity and construct validity are categorized as very valid with an average range of scores of ?85%, with a percentage of agreement ?75%. The results of this study can be used as a foundation that the learning tools with inquiry models integrated of character education can be implemented in the field.
TIME STIRRING EFFECT OF CHITOSAN FROM SHRIMP SHELLS AS GOLD ABSORBENT Prasetya, Dwi Sabda Budi; Ahzan, Sukainil
Lensa: Jurnal Kependidikan Fisika Vol 7, No 2: December 2019
Publisher : IKIP Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/j-lkf.v7i2.2685

Abstract

This study aims to analyze the effect of chitosan stirring time from shrimp shells as gold absorber. Experimental research was conducted in this study, where the manufacture of chitosan from shrimp shells began with demineralization (mineral removal) using 1.5 M HCl, deproteination (protein removal) using 3.5% NaOH and deacetylation (acetyl removal) using 60% HCl. The chitosan formed was weighed 0.1 gram (as many as five samples) and then stirred in a 10 ppm Au solution, with a stirring time of 0, 10, 20, 30, and 40 minutes, and its absorption ability to gold was analyzed using AAS (Atomic Absorbsion Spectroscopy) and obtained percentage of absorption respectively 24.79%, 50.89%, 45.64%, 40.52% and 37.87%. From the results of the study, it was found that there was an effect of chitosan stirring time from shrimp shells as gold absorber and the highest absorption at 10 minute stirring was 50.89%.

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