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The Impact of Interest in Learning on the Use of Time to Study Physics Online A Halim; Yusrizal Yusrizal; Lilia Halim
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 1 (2022): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i1.830

Abstract

The development of android mobile technology has reduced student interest in learning and this will have an impact on the use of study time. Considering that this phenomenon is important to be studied in more depth, then through this study, it will be investigated the relationship between interest in learning and the use of time. The population of this study were all high school students in the city of Banda Aceh, but due to time and cost constraints, the research respondents were only taken as many as 75 students from 4 high schools in the city of Banda Aceh. Sampling using the proportional sampling method with the consideration that only classes that have implemented subject learning using online media. The data collection instrument used a questionnaire of interest and the use of learning time. Data analysis was carried out in two stages, namely descriptive and inferential analysis. Descriptive analysis was used to obtain the average data, the largest score, and the percentage. While inferential analysis is used to obtain data about the relationship between aspects of interest, aspects of time use with variables of interest and use of time. The results of data analysis showed that the correlation coefficient (r_xy = 0.68) in the high and positive category and the coefficient of determination was 46.24% at a significant level of 0.05. Inference from the results of this study, teachers need to attract students' interest in learning by choosing a model or method that has been proven to be reliable, so that students are willing to manage their study time appropriately and efficiently
Pengaruh Model Pembelajaran Inkuiri Terbimbing Dengan Kontruktivisme Radikal Terhadap Berpikir Kritis Peserta Didik Maghfirah Ulfa; Yusrizal Yusrizal; Ismul Huda; Suhrawardi Ilyas
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 1 (2022): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i1.906

Abstract

Lack of critical thinking of students in studying physics, this can be seen from their daily scores with an average of about 65.00 lower physics than other subjects. The purpose of this research problem is to determine the effect of guided inquiry learning model with radical constructivism on students' critical thinking skills. This type of research is using a quasi-experimental. The population in this study were all students of class VII MTsS Darul Ulum Banda Aceh, while the samples were taken by two classes by purposive sampling, namely class VII Experiment class (VII-1) which consisted of 30 students, while the control class (VII-3) consisted of 30 students consists of 30 students. The instrument used is a written test. The results showed that the average pre-test for the control class was 22.36, while the average for the experimental class was 32.16. These results show that the average pre-test for both the control class and the experimental class is still in the low category. And the average post-test for the control class is 47.60, for the experimental class is 64.25. This shows an increase in critical thinking in the control class through the guided inquiry learning model but it is still in the low category, namely 0.26, while the experimental class shows an increase in critical thinking through the guided inquiry learning model with radical constructivism of 0.50 in the medium category. This study proves that the inquiry learning model with radical constructivism can influence students' critical thinking
Level of Knowledge and Understanding of State Senior High School Science Teachers in Constructing “HOT Questions” Rahmati Rahmati; Yusrizal Yusrizal; A Halim; Fitria Herliana; Syamsul Rizal
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 2 (2022): April
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i2.1133

Abstract

This study aims to describe the level of knowledge and understanding of state senior high school science teachers (SMAN) in constructing higher-order thinking items (HOT), and to compar e the level of knowledge and understanding among state senior high school Physics, Chemistry, and Biology teachers in constructing higher-order thinking items (HOT). The type of this research is descriptive quantitative, data collection technique is done by survey method using developed questionnaire instrument. The population in this research are all science teachers (Physics, Chemistry, and Biology) of State Senior High School teachers in Aceh Province, with the sample being 90 science teachers of State Senior High School teachers which are chosen randomly. The data obtained were analyzed descriptively. The result of the research shows that: (1) the level of knowledge and understanding of science teachers of State Senior High School teachers in constructing higher-order thinking items (HOT) is in the medium category, (2) the level of knowledge and understanding in constructing higher-order thinking (HOT) items, Biology teachers achieved more high and very high category compared to Physics and Chemistry teachers.
IMPLEMENTASI MODEL GUIDED DISCOVERY LEARNING BERBANTUAN AUDIO VISUAL UNTUK MENINGKATKAN MINAT BELAJAR DAN PEMAHAMAN KONSEP SISWA PADA MATERI ELASTISITAS DAN HUKUM HOOKE Affrannisah Afrrannisah; Yusrizal Yusrizal; Syahrun Nur
Jurnal Penelitian Pendidikan IPA Vol. 7 No. SpecialIssue (2021): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v7iSpecialIssue.1164

Abstract

This study aims to determine the increase in students' interest in learning and understanding of students' concepts on elasticity and Hooke's law which is taught through the Guide Discovery Learning model assisted by audio-visual media at MAN 4 Aceh Besar. The method in this study is a quasi-experimental design with a pretest posttest control group. This research was conducted on students of class XI MAN 4 Aceh Besar. The sampling technique in this research is purposive sampling. The instruments used are questionnaires and questions. The results of the analysis of the t test (independent sample t test) obtained a significance value of 0.000 <0.05, so it can be concluded that Ha is accepted, meaning that there is a difference in the average learning interest of the experimental class and control class students. The results of the N-gain analysis of the experimental class obtained an average score of 0.68 and the control class obtained an average score of 0.42 in the medium category. The results of the analysis of the t test (independent sample t test) obtained a significance value of 0.000 <0.05, so it can be concluded that Ha is accepted, meaning that there is a difference in the average understanding of the concepts of the experimental class and control class students. The conclusion in this study proves that Guided Discovery Learning assisted by audio-visual media can increase students' interest in learning and understanding of students' concepts on elasticity and Hooke's law
The Influence of the Use of Student Worksheet Problem-Based to Increase Problem Solving Skills and Learning Outcomes Oka Melawati; Evendi Evendi; A. Halim; Yusrizal Yusrizal; Elisa Elisa
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 1 (2022): January
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i1.1205

Abstract

Problem-solving skills are the needs of students in the 21st century so they are deemed necessary to have. One of the 2013 curriculum imposed by the government focuses students on problem-solving skills. The purpose of this study was to identify the influence of using problem-based Student worksheets on improving problem-solving skills and student learning outcomes on business and energy materials. This study uses a quantitative approach with a quasi-experimental research design. student worksheet implementation design uses One Group Pretest-Posttest Design. The instruments used in this study were problem-based students’ worksheets, problem-solving skills tests, and learning outcomes tests. The problem-solving skills of students were analyzed using the N-Gain test to see the effect before and after the problem-based student worksheet was implemented. The results of the student worksheet feasibility test obtained a percentage of 98.30% indicating that the student worksheet problem-based to improve problem-solving skills and learning outcomes is very feasible to use. The results of the implementation of problem-based student worksheets can improve students' problem-solving skills which are marked by an increase in the pretest-posttest value based on the results of the experimental class N-gain test of 0.93 in the high category, the control class N-gain value of 0.60 in the medium category. The learning outcomes test showed an increase in the N-gain value for the experimental class by 0.71 in the high category, the N-gain value for the control class by 0.50 in the medium category
KONTRIBUSI MAJELIS PENDIDIKAN DAERAH KABUPATEN NAGAN RAYA DALAM PEMBANGUNAN PENDIDIKAN Satria Zulkarnein; Yusrizal Yusrizal; Niswanto Niswanto
Jurnal Visipena Vol 11 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian (LP2M) STKIP Bina Bangsa Getsempena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46244/visipena.v11i2.1214

Abstract

Regional Education Council of Nagan Raya have a role as an independent community-based organization which give its contributions in giving solution or consideration to local government in deciding the education policies. The aims of this research were to find out the planning, the mechanism, the evaluation and the obstacles which faced by Regional Education Council of Nagan Raya in giving its educational contributions. This research was conducted by descriptive method through qualitative approach. The research showed that: (1) Regional Education Council of Nagan Raya has only implemented 7 programs in order to give its contributions to the local government in order develop education quality. (2) The mechanism of program implementation is implemented by a good management through focused on planning, organizing, actuating and controlling. (3) The evaluation which made in every program is implemented by a comprehensive evaluation which focused on every problem and gap which occurred. (4) The main obstacle which faced by Regional Education Council Nagan Raya in giving its educational contributions are about Regent’s political will and the deficit of district budget. Abstrak Majelis Pendidikan Nagan Raya memiliki peran sebagai lembaga independen yang berbasis masyarakat. Tujuan dari penelitian ini adalah untuk mengetahui: perencanaan program, mekanisme pelaksanaan program, evaluasi program dan hambatan-hambatan yang dihadapi Majelis Pendidikan Daerah Kabupaten Nagan Raya dalam memberikan kontribusi pembangunan pendidikan di Kabupaten Nagan Raya. Penelitian ini menggunakan metode deskriptif dengan pendekatan kualitatif. Hasil penelitian menunjukan bahwa: (1) Majelis Pendidikan Daerah Kabupaten Nagan Raya telah melaksanakan 7 program yang sesuai dengan tugas dan wewenang yang diamanahkan dalam qanun yang berlaku. (2) Mekanisme pelaksanaan program yang dilakukan Majelis Pendidikan Daerah Nagan Raya dijalankan dengan manajemen yang baik yaitu dengan melaksanakan planning, organizing, actuating dan controlling. (3) Evaluasi yang dilakukan Majelis Pendidikan Daerah Kabupaten Nagan Raya tidak dilaksanakan dengan menjalankan fungsi manajemen dengan baik, mealainkam hanya berfokus pada setiap masalah atau kesenjangan yang terjadi pada setiap program melalui observasi langsung. (4) Hambatan utama yang ditemukan Majelis Pendidikan Daerah Kabupaten Nagan Raya dalam memberikan kontribusinya pendidikannya adalah Political Will dari Bupati Nagan Raya serta defisitnya anggaran daerah.
STRATEGI KEPEMIMPINAN KEPALA SEKOLAH DALAM MENINGKATKAN KEDISIPLINAN GURU PADA MAN 1 KABUPATEN ACEH UTARA Muhammad Kautsar; Yusrizal Yusrizal; Bahrun Bahrun
Jurnal Visipena Vol 11 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian (LP2M) STKIP Bina Bangsa Getsempena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46244/visipena.v11i2.1216

Abstract

A school principal as a top manager has a strategic role in fostering the school teachers’ work discipline. The objective of his research was to describe the programs or policies made and the obstacles encountered by the principal in fostering the teachers’ work discipline at Islamic State Senior High School (MAN) 1 of Aceh Utara Regency. A descriptive – qualitative approach was used in conducting this research, and the data were collected by doing interviews, observation, and documentation. The research subjects were the school principal and the school teachers. The results indicate that the aim of the programs fostering the teachers’ work discipline was to achieve the learning goals which might expectedly lead to the improvement of the school quality. Each program was arranged to provide a good, effective, and fun learning which should be the school goals – oriented. It was also found that in facing the teachers with a moderate level of work commitment, the principal implemented situational leadership while in dealing with the teachers who had higher level of work commitment, the principal implemented consultative and participative leadership. In addition, the principal often discussed with the teachers and listen to their ideas. The obstacles encountered by the principal in fostering the teachers’ work discipline and motivation were several teachers who came late to the school, those who prepared the incomplete learning tools, and those who used no media in teaching and learning process. Abstrak Kepala sekolah sebagai top manager memiliki peran yang strategis dalam meningkatkan disiplin kerja guru. Penelitian ini bertujuan untuk mendeskripsikan program kepala sekolah, kebijakan kepala sekolah untuk meningkatkan komitmen kerja guru, serta kendala kepala sekolah dalam meningkatkan kedisiplinan guru pada MAN 1 Kabupaten Aceh Utara. Penelitian ini menggunakan pendekatan deskriptif kualitatif.Teknik pengumpulan data yang digunakan adalah wawancara, observasi, dan studi dokumentasi.Subjek penelitian kepala sekolah dan guru. Hasil penelitian menunjukkan bahwa program peningkatan disiplin kerja guru bersasaran untuk tercapainya proses pembelajaran dengan optimal, sehingga pada akhirnya mutu sekolah dapat ditingkatkan. Setiap penyusunan program diarahkan agar proses pembelajaran berjalan dengan baik, efektif, dan menyenangkan, dan berorientasi kepada pencapaian tujuan sekolah. Kebijakan kepala sekolah untuk meningkatkan komitmen guru dengan menerapkan kepemimpinan yang bersifat situasional bagi guru-guru yang komitmen kerjanya biasa, tetapi sikap mereka lebih patuh dalam melaksanakan tugasnya, kepala sekolah menerapkan kepemimpinan konsultatif dan partisipatif. Kepala sekolah banyak berdiskusi untuk mendapatkan cara yang disetujui oleh guru-guru. Kendala dalam meningkatkan disiplin kerja guru antara lain masih ada sebagian kecil guru yang datang terlambat ke sekolah, masih ada guru yang tidak menyiapkan perangkat pembelajaran dengan lengkap, tidak pernah menggunakan media dalam melaksanakan pembelajaran.
SUPERVISI AKADEMK KEPALA SEKOLAH DALAM MENINGKATKAN KOMPETENSI PEDAGOGIK GURU DI SD NEGERI TADU ATEUH KABUPATEN NAGAN RAYA Sri Rosi Antina; Yusrizal Yusrizal; Nasir Usman
Jurnal Visipena Vol 11 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian (LP2M) STKIP Bina Bangsa Getsempena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46244/visipena.v11i2.1224

Abstract

Academic supervision is a process taken by the principal to improve teacher's ability to manage studies. This study aims to determine the program, implementation, follow-up, supporting factors, and obstacles to the academic supervision of principals in improving teacher's pedagogical competence in Sekolah Dasar Tadu Ateuh, Nagan Raya Regency. This study uses a descriptive method with a qualitative approach. Data collection techniques using interviews, observation, and documentation study. The research subjects were the principal and teachers. Data were analyzed using reduction techniques, presentation, and drawing conclusions. The results showed: (1) the academic supervision program was made based on the school's strategic plan, namely increasing teacher's ability to manage effective study; (2) The implementation of academic supervision uses practical, objective, humanist, sustainable, and constructive principles through approaches and techniques based on teacher characteristics; (3) The principal provides guidance and direction, then teachers are recommended to attend competency improvement training; (4) The supporting factors for academic supervision are the teacher's willingness to learn, good teacher perceptions, the principal's knowledge and harmonious relationships between school members. Obstacles to academic supervision are sudden external activities of the school principal so that the supervision schedule that has been arranged is disrupted. There are no senior teachers who can help the principal. There are no religious teachers and sport teachers, thus increasing the workload of classroom teachers. Teachers were unable to attend the scheduled class visit schedule. Abstrak Supervisi akademik merupakan suatu proses yang ditempuh oleh kepala sekolah untuk membantu guru meningkatkan kemampuannya dalam mengelola pembelajaran yang efektif. Penelitian ini bertujuan untuk mengetahui program, pelaksanaan, tindak lanjut, faktor pendukung dan hambatan supervisi akademik kepala sekolah dalam meningkatkan kompetensi pedagogik guru di Sekolah Dasar Negeri Tadu Ateuh Kabupaten Nagan Raya. Penelitian ini menggunakan metode deskriptif dengan pendekatan kualitatif. Teknik pengumpulan data dengan metode wawancara, observasi dan studi dokumentasi. Subjek penelitian adalah kepala sekolah dan guru. Data dianalisis dengan teknik reduksi, penyajian dan penarikan kesimpulan. Hasil penelitian menunjukkan: (1) Program supervisi akademik dibuat berdasarkan salah satu rencana strategis sekolah, yakni meningkatkan kemampuan guru dalam mengelola pembelajaran yang efektif; (2) Pelaksanaan supervisi akademik menggunakan prinsip praktis, objektif, humanis, berkesinambungan dan konstruktif melalui pendekatan dan teknik berdasarkan karakterisktik guru; (3) Kepala sekolah memberikan bimbingan dan pembinaan, kemudian guru direkomendasikan untuk mengikuti pelatihan peningkatan kompetensi; (5) Faktor pendukung supervisi akademik adalah kemauan guru untuk belajar, persepsi guru yang baik tentang supervisi akademik, pengetahuan kepala sekolah dan hubungan harmonis antar warga sekolah. Hambatan dalam supervisi akademik yaitu kegiatan eksternal kepala sekolah yang sifatnya mendadak sehingga jadwal supervisi yang sudah disusun menjadi terganggu. Tidak ada guru senior yang dapat membantu kepala sekolah. Tidak ada guru mata pelajaran pendidikan agama dan guru mata pelajaran olahraga sehingga menambah beban kerja guru kelas. Guru berhalangan hadir pada jadwal kunjungan kelas yang sudah ditetapkan.
STRATEGI KEPALA SEKOLAH DALAM PEMBERDAYAAN KINERJA GURU PADA SMA NEGERI DI TRUMON RAYA Dahniar Dahniar; Yusrizal Yusrizal; Nasir Usman
Jurnal Visipena Vol 11 No 2 (2020)
Publisher : Lembaga Penelitian dan Pengabdian (LP2M) STKIP Bina Bangsa Getsempena

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46244/visipena.v11i2.1232

Abstract

The head master is top manager as the strategies roles in empowering the teacher performances. The purpose of this research is to know: arranging programs, the implementing programs, evaluation and obstruction challenging of the head master in empowering the teacher performances at SMA Negeri Trumon Raya. This research using qualitative research method descriptive. The techniques using to collected data those are: interview, observation, and documentation study. The subject of this research are head master and teachers. The results of this research show those are: menunjukkan (1) the arranging program conducted by the head master in empowering the teacher performances to analysis initial needed, from the result of analysis that defined what will discussed to developing the teacher performances. (2) The implementing strategy program in empowering the teacher performances in holding the MGMP training activities. For instances workshop, assigning each teachers to conduct the lesson plan, harnessing the peer teachers in circumstances, and the teacher facilities needed. The strategy conducting by the head master is the ways to organizing the function as the tool in communication, share knowledge, thinking, and experiences in increasing the teacher performances. (3) The evaluation program conducting with the way is academics supervision with the visiting classroom techniques. And (4) the obstruction faced by the head master those are lack of indiscipline’s of teacher, tendency of teacher in copy paste the lesson plan, and less of competence of teachers in mastering the learning technology, lack of facilities in supporting the learning process. Abstrak Kepala sekolah sebagai top manager memiliki peran yang sangat strategis dalam memberdayakan kinerja guru. Tujuan penelitian ini untuk mengetahui: penyusunan program, strategi pelaksanaan program, evaluasi dan hambatan yang dihadapi kepala sekolah dalam perberdayan kinerja guru pada SMA Negeri di Trumon Raya. Penelitian ini menggunakan pendekatan kualitatif dengan metode deskriptif. Teknik pengumpulan data yang digunakan adalah: wawancara, observasi dan studi dokumentasi. Subjek penelitian adalah kepala sekolah dan guru. Hasil penelitian menunjukkan bahwa: (1) penyusunan program yang dilakukan kepala sekolah dalam pemberdayaan kinerja guru dengan menganalisis kebutuhan awal, dari hasil analisis tersebut baru ditentukan apa yang harus dilakukan untuk mengembangkan kinerja guru; (2) Strategi pelaksanaan program pemberdayaan kinerja guru dengan menyelenggarakan kegiatan pelatihan MGMP, pelatihan berupa workshop, menugaskan setiap guru mata pelajaran untuk membuat perangkat pembelajaran, memanfaatkan tutor sebaya sesama guru dilingkungan sekolah, dan memfasilitasi guru terhadap keperluannya. Strategi yang dilaksanakan kepala sekolah merupakan wadah asosiasi yang berfungsi sebagai sarana untuk saling berkomunikasi, bertukar ilmu, fikiran dan pengalaman dalam rangka meningkatkan kinerja guru; (3) evaluasi program dilakukan dengan cara melakukan supervisi akademik dengan teknik kunjungan kelas, dan (4) kendala yang dihadapi adalah kurangnya kedisiplinan guru, kecendering guru melakukan copy paste dalam mencari bahan ajar, keterbatasan kemampuan guru dalam menguasai teknologi pembelajaran, kurangnya fasilitas penunjang proses pembelajaran.
Implementation of Project Based Learning Through the STEMC Approach to Improve Students' Creative Thinking Skills Ismi Zatya Iskandar; Sulastri Sulastri; Saminan Saminan; Elisa Elisa; Yusrizal Yusrizal; Ibnu Khaldun; Latifah Hanum
Jurnal Penelitian Pendidikan IPA Vol. 8 No. 3 (2022): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v8i3.1585

Abstract

The purpose of this study was to investigate the improvement of students' creative thinking skills by implementing STEMC-based project-based learning. This study consisted of 52 students of class X science at SMAN 3 Langsa. Creative thinking ability was assessed through pretest-posttest which was tested using statistically paired sample t-test and N-gain test. The results of the study stated that the application of the STEMC-based PjBL model on electrolyte and nonelectrolyte materials had increased creative thinking skills at a significant level of 0.000, indicating a sig value <0.05 and the results of the N-gain calculation were 0.8 in the high category. The results of the analysis showed that there were differences in the improvement of creative thinking skills before and after the application of the STEMC-based PjBL model. The results of the N-gain of each indicator of creative thinking ability, namely 0.47 elaboration are classified in the medium category, while flexibility, fluency and originality with N-gain results of 0.97, 0.87, and 0.8 are classified in the high category
Co-Authors . Melvina A Halim Abdul Hadi Abdullah , Adriman, Ramzi Affrannisah Afrrannisah Arisman Juanda Asmaul Husna Bahrun Bahrun Cut Luthfia Harum Cut Morina Zubainur Cut Nurmaliah Cut Refereni Afdar Cut Wan Moulida Dahniar Dahniar Diah Vitaloka Hartati Elisa Elisa Elisa Elisa Elisa Elisa Elliana Elliana Evendi Evendi Fitri Maulida Fitria Herliana Gani, Abdul Hafnati Rahmatan Halmaida Halmaida Hasbullah Hasbullah Herdiana Herdiana Hilda Mazlina Hilda Restina Ibnu Khaldun Ichsan Ichsan Ismi Amalia Sari Ismi Zatya Iskandar Ismul Huda Janiar Munira Juliana Juliana Julianti Julianti Karina Purwanti Khairuddin Khairuddin Lasmy Lasmy Latifah Hanum Lilia Halim Lilia Halim M. Duskri M. Ikhsan Maghfirah Ulfa Marlina Marlina Marliza , Maulida Maulida Muhammad Hasan Muhammad Kautsar Muhammad Syukri Muhammad Syukri Muhammad Yasir Muhibbuddin Muhibbuddin Multhaza Multhaza Murniari AR Mustafa Mustafa Nasaruddin Nasaruddin Nasir Usman Nasir Usman Niswanto Niswanto Niswatul Khaira Nolismasari Nolismasari Nurdin Saidi Nurhayati Yasin Nurul Wati Nurulwati Nurulwati Oka Melawati Rahmad Dawood Rahmah Johar Rahmah Johar Rahmati Rahmati Ramsyiah Ramsyiah Raudhatul Juniati Razali Razali Rejeki Rejeki Rifaatul Mahmuzah Rini Mutia Rini Safitri Rini Safitri Roslidar Roslidar Salmawati Salmawati Saminan, Saminan Satria Zulkarnein Shahruddin Zakaria Sri Rosi Antina Sufrida Sufrida Suhrawardi Ilyas Sulastri Sulastri Susti Vellayati Syahrun Nur Madjid Syamsul Rizal T. Marwanda Thaib Rizwan Zakianti Zakianti