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All Journal Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) JURNAL ILMIAH PENDIDIKAN FISIKA AL BIRUNI JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) JPPPF (Jurnal Penelitian dan Pengembangan Pendidikan Fisika) Jurnal Penelitian Pendidikan IPA (JPPIPA) Indonesian Journal of Teaching in Science Journal of Applied Agricultural Science and Technology

Endi Suhendi

Universitas Pendidikan Indonesia

Author-ID : 2526403

Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

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Desain Instrumen Rubrik Kemampuan Berkolaborasi Siswa SMP dalam Materi Pemantulan Cahaya Hermawan Hermawan; Parsaoran Siahaan; Endi Suhendi; Ida Kaniawati; Achmad Samsudin; Anggi Hanif Setyadin; Syarif Rokhmat Hidayat
Jurnal Penelitian & Pengembangan Pendidikan Fisika Vol 3 No 2 (2017): JPPPF - Jurnal Penelitian & Pengembangan Pendidikan Fisika, Volume 3 Nomor 2, Des
Publisher : Program Studi Pendidikan Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Abstract This study aims to develop a rubric of students' collaboration skills in junior high school on light reflection materials. The collaboration skills are one of the important competencies of the 21st century so that teachers in the field must have their rubric to measure students' collaboration skills. The rubric is based on the adaptation and modification of the collaboration skills section of the International Reading Association (IRA) (2005). The research method used is the method of research and development of 4D (define, design, develop and disseminate) 2D (restricted and design) design model. Aspects that are adapted and modified are contributions, time management, problem solving, working with others and research techniques that are trained on the activity of light reflecting material. Each aspect is given a score of 1 - 4 with 1 (less), 2 (sufficient), 3 (good) and 4 (excellent). Through the define and design stage, a collaboration scoring rubric for junior high school students has been developed in light reflection materials based on adaptation and modification of the collaboration skills framework of the International Reading Association (IRA) (2005). Keywords: collaboration skills, collaboration rubric skills, group investigation. Abstrak Penelitian ini bertujuan untuk mengembangkan rubrik penilaian kemampuan berkolaborasi siswa SMP terkait materi pemantulan cahaya. Kemampuan berkolaborasi adalah salah satu kompetensi penting abad ke-21 sehingga guru di lapangan harus memiliki rubrik tersendiri untuk mengukur kemampuan berkolaborasi siswa. Rubrik disusun berdasarkan adaptasi dan modifikasi rubrik kemampuan berkolaborasi dari International Reading Association (IRA) (2005). Metode penelitian yang digunakan adalah metode penelitian dan pengembangan model intruksional 4D (define, design, develop and disseminate) yang dibatasi hanya 2D (define and design). Aspek yang diadaptasi dan dimodifikasi yaitu kontribusi, manajemen waktu, pemecahan masalah, bekerja dengan orang lain dan teknik penyelidikan yang dilatihkan pada kegiatan percobaan pemantulan cahaya. Setiap aspek diberi skor 1 - 4 dengan keterangan 1 (kurang), 2 (cukup), 3 (baik) dan 4 (sangat baik). Melalui tahap define dan design yang dilakukan, telah dikembangkan rubrik penilaian kemampuan berkolaborasi untuk siswa SMP dalam materi pemantulan cahaya berdasarkan adaptasi dan modifikasi rubrik kemampuan berkolaborasi dari International Reading Association (IRA) (2005). Kata-kata Kunci: kemampuan berkolaborasi, rubrik kemampuan berkolaborasi, grup investigasi.

PENGARUH WAKTU POSTSINTERING HEAT TREATMENT (PHT) PADA KONDUKTIVITAS IONIK ELEKTROLIT PADAT CALCIA STABILIZED ZIRCONIA (CSZ) YANG MENGANDUNG SILICA (SiO2) DAN MAGNESIA (MgO) Herdyka Sulistiardi; Dani Gustaman Syarif; Endi Suhendi
Jurnal Sains dan Teknologi Nuklir Indonesia (Indonesian Journal of Nuclear Science and Technology) Vol 17, No 1 (2016): Februari 2016
Publisher : BATAN

PENGARUH WAKTU POSTSINTERING HEAT TREATMENT (PHT) PADA KONDUKTIVITAS IONIK ELEKTROLIT PADAT CALCIA STABILIZED ZIRCONIA (CSZ) YANG MENGANDUNG SILICA (SiO2) DAN MAGNESIA (MgO). Pengaruh waktu Postsintering Heat Treatment (PHT) pada konduktivitas ionik elektrolit padat CSZ yang mengandung SiO2 dan MgO telah diteliti. PHT dilakukan dengan tujuan untuk meningkatkan konduktivitas ionik elektrolit padat CSZ yang mengandung SiO2 dan MgO. Elektrolit padat CSZ yang mengandung SiO2 dan MgO dibuat menggunakan metode pressing dengan komposisi CSZ, SiO2, dan MgO berturut-turut 99 %berat, 0,5 %berat, dan 0,5 %berat. Pelet kemudian disinter pada suhu 1450ᵒC selama 4 jam dan PHT pada suhu 1350ᵒC dengan variasi waktu 0 jam, 4 jam, dan 8 jam. Analisis struktur kristal menunjukkan bahwa pelet yang telah dibuat membentuk kristal kubik dan tidak terpengaruh PHT. Analisis densitas menunjukkan bahwa terjadi peningkatan densitas seiring peningkatan waktu PHT tetapi peningkatan tersebut tidak begitu signifikan. Analisis struktur mikro menunjukkan bahwa tidak terdapat perbedaan ukuran butir yang signifikan seiring peningkatan waktu PHT, namun terjadi perubahan distribusi pori. Berdasarkan penelitian yang telah dilakukan diketahui bahwa seiring peningkatan waktu PHT terjadi pula peningkatan konduktivitas ionik elektrolit padat CSZ yang mengandung SiO2 dan MgO.

Review Penggunaan Reduced Graphene Oxide/TiO2 sebagai Fotoelektrode pada Dye-Sensitized Solar Cell Eka Cahya Prima; Meilisyah Putri Utami; Andhy Setiawan; Endi Suhendi
JIPFRI (Jurnal Inovasi Pendidikan Fisika dan Riset Ilmiah) Vol 6 No 1 (2022): May Edition
Publisher : Program Studi Pendidikan Fisika STKIP Nurul Huda

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30599/jipfri.v6i1.1146

Many studies on graphene applied to DSSC have been carried out with the aim of increasing the efficiency of power conversion in organic solar cells. This research was conducted to find the best composition of soar cells so that they can be utilized and converted into electrical energy. The use of graphene as a photoanode can increase the conversion efficiency along with good electrical conductivity values in graphene. This review aims to analyze the process of increasing power conversion efficiency in DSSC caused by the addition of graphene to TiO2 which acts as a photoanode in DSSC during the last five years. The results of the measurement of DSSC efficiency increased when the addition of reduced graphene oxide to TiO2 was carried out.

Implementation of Interactive Conceptual Instruction (ICI) With Computer Simulation: Impact of Students’ Misconceptions on Momentum and Impulse Material Ida Kaniawati; Agus Danawan; Iyon Suyana; Achmad Samsudin; Endi Suhendi
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 10, No 1 (2021): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Misconceptions frequently occur in various physics concepts, including momentum and impulse. Misconceptions in students must be addressed since they can hinder the learning process. This study aimed at investigating students' misconceptions on momentum and impulse material after implementing Interactive Conceptual Instruction (ICI) with computer simulations. The method employed in this study was a quasi-experimental design with One Group Pretest-Posttest Design. This research was conducted on 30 students of the tenth grade determined by the purposive sampling technique. Fifteen four-tier test items were used as the research instrument. The N-gain analysis was performed to know the reduction of misconceptions. The results showed that the N-gain value obtained was 0.46 with moderate interpretation, meaning that Interactive Conceptual Instruction (ICI) aided with computer simulations could reduce student misconceptions. The results also indicated that the misconception after treatment was smaller than before treatment. This phenomenon can be seen from the reduction of misconceptions by 11.6% after implementing Interactive Conceptual Instruction (ICI) with computer simulations. Therefore, it can be concluded that the Interactive Conceptual Instruction (ICI) with computer simulations can facilitate students in the learning process so that misconceptions can be reduced.

Introduction, connection, application, reflection, and extension (ICARE) learning model: The impact on students’ collaboration and communication skills Parsaoran Siahaan; Ermawati Dewi; Endi Suhendi
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 9, No 1 (2020): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

The 21st-Century skills are skills that must be possessed by students to compete in the era of globalization. The provisioning of these skills to students can go through the physics learning process at school. Introduction, Connection, Application, Reflection, and Extension (ICARE) learning model is one of the learning models that can be applied in Physics learning in high school to train students' skills in critical thinking, creative thinking, communication, and collaboration. The purpose of this study was to determine the improvement of communication and collaboration skills of students after applying the ICARE learning model. The research method used was quasi-experimental with a single-group interrupted time series design. The sample were high school students in one of the Karawang districts, consisting of 12 male students and 15 female students. During the learning activities, students will be given a worksheet with several different questions each meeting tailored to the material being studied, and the answer will be used as a source for analyzing their written communication skills. These questions lead students to be able to communicate the results of their experiments following scientific principles. Experimental activities conducted by students will be analyzed to measure their collaborative skills, and students' presentations will be used to measure their oral communication skills. The improvement of those three aspects was analyzed at each meeting. The results showed that the implementation of learning using the ICARE approach was able to improve the ability of students to collaborate with an average score of 7.87 at the first meeting to 15.93 at the second meeting. While the communication, especially report-writing skills of students, increased from the average of1.53 at the first meeting to 3.6 at the second meeting. The aspect of making presentation material increased from 1.67 to 3.17, and the aspect of oral presentation increased from 1.53 to 3.53 at the second meeting. Based on the results obtained, it can be concluded that students' communication and collaboration skills improve after the ICARE learning model implemented

Developing MOFI on Transverse Wave to Explore Students’ Misconceptions Today: Utilizing Rasch Model Analysis Shobrina Nurul Mufida; Ida Kaniawati; Achmad Samsudin; Endi Suhendi
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 5 (2022): November
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i5.2229

This research aimed to describe the diagnostic instrument validity from Multi-representation of Four-tier Instrument on Transverse Wave (MOFI-OTW), which is useful in exploring the misconceptions. The ADDIE (Analyzing, Designing, Developing, Implementing, and Evaluating) model has already been utilized as the research method. In the developing stage, item construction is in the form of multi-representation (statements, pictures, graphs, tables, and mathematical symbols). The sample consisted of 81 high school students aged 16-18 years (23 males called “Cung” and 58 females called “Nduk”) in East Java. Data validity, instrument reliability, and distribution of students' conceptions have been analyzed using the Rasch Model with MINISTEP 4.7.0.0 software. Validity based on item dimensionality is valid. The reliability based on Cronbach Alpha (α) is good category, the value of item reliability is very good category, and person reliability is moderat category. Students’ conceptions are categorized as Sound Understanding (SU), Partial Understanding Positive (PUP), Partial Understanding Negative (PUN), No Understanding (NU), Misconception (MC), and No Coding (NC). The largest conception category is MC. Misconceptions are still found in the sub-concept of transverse wave in various representations. In conclusion, MOFI-OTW can be developed through the ADDIE model by utilizing the Rasch analysis and used to explore students' conceptions and misconceptions.

Problem-Based Learning Integrated Reading and Writing in Work and Energy Phenomena: Its Effectiveness on Problem-Solving Skills and Reading-Writing Literacy Indah Safitri; Parlindungan Sinaga; Endi Suhendi
Jurnal Ilmiah Pendidikan Fisika Al-Biruni Vol 11, No 2 (2022): Jurnal Ilmiah Pendidikan Fisika Al-Biruni
Publisher : Universitas Islam Negeri Raden Intan Lampung, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24042/jipfalbiruni.v11i2.13833

Problem-solving Skills and Reading-Writing Literacy are two necessary things students must have to compete in the 21st century. This study aims at determining the effectiveness of Problem-based Learning with Integrated Reading and Writing tasks to improve students' problem-solving and reading-writing literacy skills. A quantitative method using a quasi-experimental design with a non-equivalent control group was employed in this study. The sampling technique used in this study was the purposive sampling technique. The sample used in this study was 36 students divided into two groups: the control group and the experimental group. The instrument used in this study was a physics problem-solving skill test instrument and a reading-writing literacy instrument. The data analysis technique in this study was a quantitative analysis technique. The results showed that the N-gain value of the physics problem-solving skill test for the experimental group was 0.67 in the medium category, and the control group was 0.65 in the medium category. In the reading-writing literacy test, the N-gain value for the experimental group was 0.55 in the medium category and 0.29 in the low category for the control group. The Problem-based Learning model with Integrated Reading and Writing Tasks has little impact on improving students' problem-solving skills. However, it has a significant effect on increasing students' reading-writing literacy.

The Effect of Couple Doping Gd and Co on The Physical Characteristics of LaFeO3 Thick Film for Acetone Gas Sensor Application Hendi Haryadi; Dani Gustaman Syarif; Endi Suhendi
Jurnal Penelitian Fisika dan Aplikasinya (JPFA) Vol. 12 No. 2 (2022)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jpfa.v12n2.p115-126

The acetone gas sensor is one type of sensor being researched for its application because it detects the presence of diabetes in sufferers. Gas sensors with high sensitivity and low operating temperature have been extensively investigated for this purpose, and this research is focused on the same purpose. Synthetization and characterization of LaFeO3 with co-doping Gd2O3 and CoO thick film ceramics for acetone gas sensor was conducted. LaFeO3 was made using the co-precipitation method with 2.5% CoO for each and 0%, 2.5%, and 5% Gd2O3 variation to the LaFeO3. The LaFeO3 thick film was prepared using the screen-printing technique and calcined at 800°C for two hours. The analysis of crystal structure characterization using X-Ray Diffraction (XRD) resulted in LaFeO3 with co-doping Gd2O3 and CoO thick film ceramics having the same cubic crystal phase with smaller lattice parameters and crystallite sizes after doping were added. The results of morphology structure characterization using Scanning Electron Microscopy (SEM) showed the grain size of the LaFeO3 with co-doping 2.5% CoO and 0%, 2.5%, and 5% Gd2O3 samples to support the analysis of electric property characterization later on. The electric property characterization showed that LaFeO3 with various Gd2O3 concentrations, as part of co-doping with 2.5% CoO, resulted in higher sensitivity compared to the lacking of Gd2O3 one. In order, the maximum sensitivity values of each Gd2O3 concentration are 2.74, 3.06, and 8.76 when exposed to 270 ppm acetone gas at 310°C. Gd2O3, as part of co-doping in LaFeO3 with CoO 2.5%, has successfully increased the sensitivity to the gas sensor yet still can not meet the expectation towards the operating temperature, which is still high compared to other references.

The Effect of Temperature and Roasting Time on The Physical Properties of Arabica and Robusta Gayo Coffee Bean Elin Yusibani; Ikramullah ikramullah; Evi Yufita; Zulkarnain Jalil; Endi Suhendi
Journal of Applied Agricultural Science and Technology Vol. 7 No. 2 (2023): Journal of Applied Agricultural Science and Technology
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/jaast.v7i2.75

The effect of variations in temperature and roasting time on the physical properties of coffee beans originating from the Gayo highlands with Arabica and Robusta types have been studied in this paper. Physical properties measured include weight loss, true density, porosity, and water content. The measurement procedure follows Standard Nasional Indonesia (SNI) 01-2907-2008. Three roasting levels were used in this study, i.e., Light Roast (159 -164 °C), Medium Roast (211 - 215 °C), and Dark Roast (above 232 °C) by an oven. The result showed that the weight loss for Arabica and Robusta coffee beans is from 11 - 19% and 14 - 29%, respectively. The true density for Arabica and Robusta coffee beans ranged from 0.905 - 1.085 g/cm3 and 0.950 - 1.156 g/cm3, respectively. The difference in porosity changes before and after roasting was 23 - 73% for Arabica and 33 - 68% for Robusta coffee beans. Meanwhile, the water content of Arabica and Robusta coffee beans after roasting is 0.7 - 5% and 0.6 - 6%, respectively. The value of the weight loss, true density, and water content of Arabica is lower than that of the Robusta coffee bean, while the porosity value of Arabica is higher than that of the Robusta coffee bean.

Feasibility Analysis of the Development of STEM-Based Physics E-Book with Self-Regulated Learning on Global Warming Topics Dwi Ayu Lestari; I. R. Suwarma; Endi Suhendi
Indonesian Journal of Teaching in Science Vol 4, No 1 (2024): IJOTIS: (ONLINE FIRST) March 2024
Publisher : Universitas Pendidikan Indonesia (UPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/ijotis.v4i1.60110

This study aims to analyze the feasibility of a physics e-book based on STEM with self-regulated learning on global warming topics. This research is a design-based research (DBR) using 4D models (define, design, develop, and disseminate). The research sample refers to 3 expert assessments consisting of 2 expert lecturers and 1 senior high school physics teacher. Then the responses of 36 students. The instrument used is an expert validation sheet and legibility tests of the main idea of the e-book on each page. The results of data analysis using Aiken validation show that: 1) the suitability of the material with STEM is 0.83 in the category of valid, 2) the suitability of the e-book with Self-regulated learning (SRL) is 0.78 in the category of valid, and 3) the feasibility of e-book is 0.82 in the category of valid. Meanwhile, the results of the readability test showed a proportion of 99.83% in the good category. So, the development of a physics e-book base on STEM with self-regulated learning on global warming topic is "feasible" to be widely implemented

Co-Authors Achmad Samsudin Agus Danawan Andhy Setiawan Anggi Hanif Setyadin Dani Gustaman Syarif Dani Gustaman Syarif Dwi Ayu Lestari Eka Cahya Prima Elin Yusibani Ermawati Dewi Evi Yufita Hendi Haryadi Hera Novia Herdyka Sulistiardi Hermawan Hermawan I. R. Suwarma Ida Kaniawati Ikramullah ikramullah Indah Safitri Iyon Suyana Meilisyah Putri Utami NURUL MUFIDA, SHOBRINA Parlindungan Sinaga Parsaoran Siahaan Syarif Rokhmat Hidayat TATI NURHAYATI Zulkarnain Jalil

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