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All Journal Biologi Edukasi : Jurnal Ilmiah Pendidikan Biologi JPS Unimus Jurnal Penelitian Pendidikan IPA (JPPIPA) Chimica Didactica Acta : Journal of Chemistry and Chemistry Education Jurnal Pendidikan Sains Indonesia (Indonesian Journal of Science Education) JIPI (Jurnal IPA dan Pembelajaran IPA) Jurnal Ilmiah Mahasiswa Kimia
Ibnu Khaldun
Universitas Syiah Kuala
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Environmental Science Materials Science & Nanotechnology Physics Social Sciences Other

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PEMANFAATAN RESIN KITOSAN-AMIN UNTUK RECOVERY EMAS DARI LIMBAH PENGOLAHAN EMAS M. Nasir; Adlim Adlim; Ibnu Khaldun; M. Ali Zulfikar
Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi Vol 4, No 2 (2012): Biologi Edukasi: Jurnal Ilmiah Pendidikan Biologi
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (114.026 KB)

Abstract

Chitosan as a material of biological origin has recently been used for recovery of metal ions. This research aims to synthesize kitosan resin resulted by the reaction of kitosan with etilendamin. In the present work chitosan was cross-linked with glutardialdehyde and subsequently treated with epichlorohydrine and ethylene diamine. The resins CR-amine was found to contain 22.7% water content,  and were insoluble in organic solvents as well as in mineral and organic acids. The concentration values of the active sites on the resins are reported. The higher concentration of active sites of CR-amine 6.01 mmol/g indicates that the “en” moieties are covalently bonded to the cross-linked resin. Several chemical modification methods were tried in increasing the uptake capacity of cross-linked chitosan bead. Among them, aminated chitosan beads formed through the chemical reaction using ethylenediamine showed the highest uptake capacity for gold ions. Uptake capacity of aminated chitosan beads was increased to about 0.8 mmol Au3+ g-1 dry mass compared to that before modification. The increase of amine groups was confirmed by IR spectrum and measurement of amine concentration and surface condition on aminated chitosan bead was also confirmed by  SEM.
The Development Higher Order Thinking Skill (Hots) As Questions In Chemistry Study (Solubility And Solubility Product Constant) Faucut Sarah; Ibnu Khaldun; Abdul Gani
JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG Vol 9, No 1 (2021): JURNAL PENDIDIKAN SAINS UNIVERSITAS MUHAMMADIYAH SEMARANG
Publisher : Pendidikan Kimia Unimus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/jps.9.1.2021.51-60

Abstract

The significance of critical thinking as one of the 21st  century skills makes the Indonesian Ministry of  Education  and  Culture  integrate  Higher  Order Thinking  Skill  (HOTS)  in the  latest national curriculum. Students critical thinking skills to working on HOTS assessment are fundamental, especially in learning chemistry lessons. The research purpose is to analyze the quality of HOTS chemistry questions/ assessment and to observe the teachers and students responses to computer-based test instruments developed using Wondershare Quiz Maker Software (WQM). The research method used Research And Development (R & D) Borg & Gall model. The sample was determined by Random Sampling Technique in total 104 students from several high school in Banda Aceh, it is SMAN 4, SMAN 5, SMAN 8 and SMAN 11. The data analysis technique was through calculating the percentage score of the assessment quality and analyzing the question items quantitatively such as validity, reliability, difficulty level of the questions, differential question power tests and distracting question power using proanaltes. The results showed that the quality of HOTS in chemical questions tested (for the solubility subject and the solubility product constant in terms of qualitative analysis of the items) in the validation test gained average score, it is 98.1%, means the items are qualified categories. In terms of quantitative analysis question items, it reached 95% valid and 5% invalid and the reliability test score was 0.740, are in high category. The questions difficulty covers 95% medium and 5% are in difficult level. The questions differential power for each category is 65% good, 30% medium and 5% less. The teachers and students response to the development of the computer-based HOTS test instrument using WQM software was positive and show good result. The teacher response positively on score strongly agreed was 83.3% and agreed 16.7%, while the students response on score strongly agreed was 27.2% and 63.3% agreed. The research conclusion there is significant  students critical thinking skills improved  (in learning the solubility and the solubility product constant chapter) by using HOTS assessment using Wondershare Quiz Maker software.
Development of Microsoft Excel-based Interactive Media on Chemical Reaction Balancing Rauzatur Rahmi; Ibnu Khaldun; Mustanir Mustanir
Jurnal Penelitian Pendidikan IPA Vol. 7 No. 3 (2021): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v7i3.612

Abstract

All schools in general already have adequate technology and information facilities. Teachers and students can use computers as learning media usually the existing media are only in the form of powerpoints which tend to be teacher-centered, It is necessary to have interactive learning media in the learning process, one of which is Microsoft excel-based interactive media on chemical reaction equalization material, especially metathesis reactions. The name of the developed media is Chem React, which is a chemical reaction. This study aimed to determine the feasibility of Chem React media as a chemistry learning medium and to determine the responses of teachers and students to the development of Chem React media. This study uses the ADDIE research and development model. The sampling technique was carried out by purposive sampling, namely 15 students who were able to use computers and ten chemistry teachers. The procedure for collecting data was needs analysis, design, development, validation, media revision, small-scale testing, and evaluation. Data analysis techniques calculated the feasibility of the media, student, and teacher responses. The results of the feasibility assessment by media and material experts obtained an average rating of 92.97%, in the very good category. The results of teacher responses of 91.50% and student responses of 90.33% fall into the very good category. So the Chem React media is very suitable to be used as a learning medium on chemical reaction balancing material
The Influence of Pocketbook to Improve Student Learning Outcomes and Motivation on Electron Configuration Material Nurdiyati Abdullah; Ibnu Khaldun; Musri Musman
Jurnal Penelitian Pendidikan IPA Vol. 7 No. 3 (2021): July
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v7i3.647

Abstract

This study aims to determine the increase in motivation and learning outcomes of students on the use of pocketbooks. This type of research is a quasi-experiment which was carried out with a nonequivalent control group design. The population in this study were students of class X SMA Negeri 3 Banda Aceh with 66 samples selected by random sampling, data obtained through test questions, and questionnaires. The learning outcome data were analyzed by using the t test. It shows that there is an effect of the pocketbook on the learning outcomes of the experimental class with the control. The N-gain of the experimental class was 63.09 with a fairly effective value category, while the control class was 46.58. Pocketbook also affects learning motivation with the N-gain of the experimental class at 41.48, while the control class is 32.01.
IMPLEMENTATION OF THERMOCHEMISTRY LEARNING VIDEO FOR GRADE XI STUDENTS Ninis Khairunnisa; Ibnu Khaldun; Erlidawati Erlidawati
Chimica Didactica Acta Vol 8, No 1 (2020)
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (234.804 KB) | DOI: 10.24815/jcd.v8i1.25247

Abstract

A research has been conducted entitled "The Application of Thermochemistry Learning Videos for Class XI MIA-I MAN 6 Aceh Besar Students". The purpose of this study was to analyze student activities, learning outcomes, and student responses after the application of thermochemistry learning video in class XI MIA-I MAN 6 Aceh Besar. This study uses an approach with a descriptive type of research. The sample in this study were students of class XI MIA-1 MAN 6 Aceh Besar. The results show participant activity increased significantly as seen in the percentage of activity from the first meeting to the fourth meeting in a row, which was 76.52%; 83.33% ; 85.83% and 92.42%. Learning outcomes increased and achieved classical completeness as seen from the percentage of complete learning outcomes, which was 88%. The response of students to the application of learning video media on thermochemical material also showed a positive response with a percentage of 88.2%. Thus, it can be said that student learning outcomes through the application of learning video media have increased and have taken place classically, student activities have also increased at each meeting, and students have responded positively to the application of learning video media.
PENGEMBANGAN MEDIA PEMBELAJARAN PROGRAM SIMULASI EKSTRAKSI PELARUT DAN SPEKTROFOTOMETRI UV-VIS PADA LOGAM LANTANIDA MENGGUNAKAN EKSTRAKTAN 1-PHENYL-3-METHYL-4-BENZOYL-5-PYRAZOLONE BERBASIS MICROSOFT EXCEL Ibnu Khaldun; Zulfadli Zulfadli; Cut Rizka Ramadhana
Chimica Didactica Acta Vol 10, No 2: December 2022
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (227.562 KB) | DOI: 10.24815/jcd.v10i2.28118

Abstract

Penelitian ini bertujuan untuk mengembangkan media pembelajaran program simulasi ekstraksi pelarut dan spektrofotometri UV-Vis pada logam lantanida menggunakan ekstraktan 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone berbasis Microsoft Excel, serta menguji kelayakan dan tanggapan mahasiswa terhadap media yang dikembangkan. Jenis penelitian yang digunakan adalah penelitian dan pengembangan (RD), dengan tujuh langkah yaitu; (1) potensi dan masalah, (2) pengumpulan data, (3) desain produk, (4) validasi desain, (5) revisi desain, (6) uji coba produk, dan (7) revisi produk. Instrumen penilaian terdiri dari angket kelayakan media, angket tanggapan mahasiswa dan angket system usability scale (SUS). Penelitian dilakukan kepada 25 orang mahasiswa Jurusan Pendidikan Kimia Fakultas Keguruan dan Ilmu Pendidikan Universitas Syiah Kuala. Media yang diuji coba kepada mahasiswa telah divalidasi oleh validator dengan persen kelayakan sebesar 85,00% dan kategori sangat layak. Respons mahasiswa terhadap media ini sangat baik dengan rata-rata 88,35%, dan skor SUS yang didapat sebesar 85,30 dengan kategori dapat diterima, artinya program simulasi berbasis Microsoft Excel ini dapat digunakan untuk mensimulasi praktikum mengenai ekstraksi pelarut dan spektrofotometri UV-Vis pada logam lantanida menggunakan ekstraktan 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone.
Pengaruh Model Guided Discovery Terhadap Kemampuan Berpikir Kritis Peserta didik Putri Dahliana; Ibnu Khaldun; Saminan Saminan
Jurnal Pendidikan Sains Indonesia Vol 6, No 2 (2018): Oktober 2018
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (441.152 KB) | DOI: 10.24815/jpsi.v6i2.12477

Abstract

Tujuan penelitian ini adalah untuk melihat pengaruh model pembelajaran guided discovery terhadap kemampuan berpikir kritis peserta didik pada materi gelombang. Ketidakmampuan peserta didik memahami konsep fisika dengan baik dipengaruhi oleh lemahnya kemampuan berpikir kritis. Metode penelitian yang digunakan dalam penelitian ini adalah quasi-eksperimen dengan desain jenis pre-test post-test control group design. Populasi pada penelitian ini peserta didik kelas XIMIA2(kelompok eksperimen) dan XIMIA3(kelompok kontrol) di MAN Rukoh Banda Aceh pada tahun ajaran 2017/2018. Pengambilan sampel menggunakan teknik random sampling dengan mengambil dua kelas secara sebagai kelas kontrol dan kelas eksperimen, pengumpulan data menggunakan instruments soal uraian. Hasil penelitian menunjukkan bahwa pembelajaran yang diajarkan dengan penerapan model guided discovery lebih baik dibandingkan dengan pembelajaran konvensional. Penerapan model pembelajaran guided discovery dapat meningkatkan kemampuan berpikir kritis peserta didik.
Pengaruh Problem Based Learning Melalui School Watching Terhadap Aktivitas dan Hasil Belajar Siswa Pada Materi Asam Basa di SMP Rizki Zakia; Ibnu Khaldun; Rini Safitri
Jurnal Pendidikan Sains Indonesia Vol 6, No 1 (2018): April 2018
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (450.596 KB) | DOI: 10.24815/jpsi.v6i1.10748

Abstract

 Tujuan dari kajian ini yaitu untuk mengetahui aktivitas dan hasil belajar siswa dengan penerapan PBL melalui school watching pada materi asam basa kelas VII SMP PKPU Aceh Besar. kajian ini menggunakan metode quasi exsperiment dengan randomized pretest-posttest group desain. Data dikumpulkan dengan tes tulis dan observasi. Berdasarkan hasil kajian yang diperoleh dapat disimpulkan bahwa pembelajaran dengan menerapkan PBL melalui school watching  dapat meningkatkan hasil belajar siswa pada kelas eksperimen dari 31 menjadi 77, sedangkan pada kelas kontrol yaitu 29 menjadi 70. Hasil dari observasi aktivitas belajar pada siswa kelas eksperimen dengan pembelajaran PBL melalui school watching yaitu 89% dengan kategori sangat baik, sedangkan aktivitas belajar pada siswa kelas kontrol dengan pembelajaran konvensional yaitu 79% yang dikategorikan baik.
PENERAPAN MODEL PROBLEM BASED LEARNING UNTUK MENINGKATKANHASIL BELAJAR DAN KETERAMPILAN BERPIKIR KRITIS PESERTA DIDIK PADA MATERI LARUTAN PENYANGGA Lidyawati Lidyawati; Abdul Gani; Ibnu Khaldun
Jurnal Pendidikan Sains Indonesia Vol 5, No 1 (2017): April 2017
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (638.96 KB)

Abstract

Penelitian ini bertujuan untuk mendeskripsikan efektivitas penerapan model pembelajaran Problem Based Learning (PBL) terhadap hasil belajar dan keterampilan berpikir kritis peserta didik pada materi larutan penyangga, serta untuk mendeskripsikan gambaran tanggapan peserta didik terhadap penerapan model pembelajaran tersebut. Penelitian ini menggunakan metode pre experimental dengan desain penelitian one group pretest and posttest design. Subjek penelitian diambil dengan teknik random sampling. Data penelitian ini dikumpulkan dengan menggunakan tes pilihan ganda dan tanggapan peserta didik. Data dianalisis menggunakan program SPSS dan Microsoft Excel. Hasil penelitian menunjukkan bahwa penerapan model PBL dapat meningkatkan hasil belajar dan keterampilan berpikir kritis peserta didik dengan hasil persentase pretest (40,02%), posttest (79,83%) dan N-gain (66,37%). Selain itu, tanggapan yang diberikan peserta didik terhadap model PBL adalah positif dengan kategori sangat baik, karena banyaknya peserta didik yang memberikan jawaban positif lebih tinggi persentasenya yaitu 91,7%, dibandingkan dengan yang memberikan jawaban negatif persentasenya sebesar 8,3%. Penelitian ini menyimpulkan bahwa model PBL efektif digunakan untuk dapat meningkatkan hasil belajar dan keterampilan berpikir kritis peserta didik, serta tanggapan yang diberikan peserta didik terhadap model PBL sangat baik.
Analisis Kadar Merkuri Dalam Rambut Penambang Emas Desa Alue Baro Kecamatan Meukek Secara Spektrofotometri Serapan Atom M. Nasir*; Widya Rahmah; Ibnu Khaldun; M. Hasan; Rusman Rusman
JIPI (Jurnal IPA dan Pembelajaran IPA) Vol 5, No 4 (2021): DECEMBER 2021
Publisher : Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jipi.v5i4.22654

Abstract

The activity of using mercury in gold mining in Alue Baro Village, Meukek District is carried out freely so that it has a negative impact on the environment and the health of the miners. This study aims to determine the level of mercury in the hair of artisanal gold miners in Alue Baro village by referring to the reference that has been set by WHO. The data sample collection was carried out by taking 6 hair samples from the Alue Baro village gold miners who were selected with various types of work, namely gold processing, waste processing and waste waste until the time of the interview with a minimum working period of 1 year with sample codes R1, R2, R3, R4, R5 and R6 as control samples. The six samples were analyzed using Atomic Absorption Spectrophotometry equipped with a Mercury Analyzer which showed results, respectively, 1.01; 2.38; 1.65; 1.35; 1.66; and 0.64 ppm. The results of this study indicate that all hair samples have mercury levels above the mercury threshold that has been set by WHO, namely 1 ppm. High levels of mercury in hair samples were analyzed on exposure to mercury. Further research was conducted to analyze other metals contained in the hair of gold miners in Alue Baro village
Co-Authors Adlim Adlim Cut Nurhalisa Cut Rizka Ramadhana Erlidawati Erlidawati Faucut Sarah Gani, Abdul Latifah Hanum Lidyawati Lidyawati M. Ali Zulfikar M. Hasan M. Nasir M. Nasir* Musri Musman Mustanir Mustanir Muthia Keumala Ninis Khairunnisa Nurdiyati Abdullah Putri Dahliana Rauzatur Rahmi Rima Kasyuanti Rini Safitri Rini Safitri Rizki Zakia Rusman, Rusman Saminan, Saminan Widya Rahmah Zulfadli Zulfadli