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All Journal Jurnal Pendidikan dan Pembelajaran Kimia (JPPK) Jurnal Pendidikan Kimia Universitas Riau Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Indonesian Journal of Chemical Science and Technology Educenter: Jurnal Ilmiah Pendidikan Jurna Beta Kimia
Jasmidi Jasmidi
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Faculty of Education Medan
Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Decision Sciences, Operations Research & Management Education Energy Engineering Materials Science & Nanotechnology Other

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Synthesis of Cu-(TAC) Composite with Oil Palm Empty Fruit Bunch Waste Activated Carbon Through the Adsorption Mechanism of βCarotene Sari, Lidia Mutia; Jasmidi, Jasmidi; Nasution, Hafni Indriati; Zubir, Moondra; Rahmah, Siti; Selly, Rini; Faradilla, Putri
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 6, No 2 (2023): JULY 2023
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v6i2.62305

Abstract

This study aims to determine the adsorption and desorption abilities of activated carbon and Cu-(TAC) composites in the β-carotene adsorption process on Crude Palm Oil (CPO). Oil Palm Empty Fruit Bunches (EFB) are used as activated carbon and modified with MOFs Cu-(TAC). Activated carbon and Cu-(TAC) composites were characterized by XRD, SEM-EDX, and BET. The concentration of β-carotene absorbed during the adsorption process was analyzed using a UV-Vis spectrophotometer. The variations used to determine the optimum conditions for absorption of β-carotene were the mass variation of the adsorbent and the variation in the contact time between the adsorbent and adsorbate. The results of the characterization of activated carbon showed a sharp absorption in the presence of O-H, C-H and C-O groups indicating the presence of cellulose. Activated carbon is amorphous and the Cu-(TAC) composite has a crystal structure and its pore size is mesoporous. The optimum conditions for the use of activated carbon for β-carotene adsorption were the mass variation of 8 grams with 0.495 ppm of β-carotene and contact time at 120 minutes with 2.605 ppm of β-carotene. The optimum condition of the Cu-(TAC) composite in the β-carotene adsorption process was at 4 gram mass variation with 1.026 ppm β-carotene content and optimum contact time at 60 minutes with 6.384 ppm β-carotene content. The ability of desorption can be seen from the percentage of desorption showing activated carbon in the 150th minute with 96.252% while in the Cu-(TAC) composite in the 30th minute with 88.188%.
Synthesis and Characterization of Activated Carbon/Alginate-Cu Composites Sari, Maya Novita; Muchtar, Zainuddin; Jasmidi, Jasmidi; Rahmah, Siti; Pulungan, Ahmad Shafwan; Zubir, Moondra; Selly, Rini; Faradilla, Putri
Indonesian Journal of Chemical Science and Technology (IJCST) Vol 6, No 2 (2023): JULY 2023
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v6i2.62306

Abstract

OPEFB is one source of natural fiber-based composites which have the potential to become activated carbon. This study aims to synthesize and characterize the activated carbon/alginate -Cu composite. The characterization used in this study is FTIR. The results of this study The synthesis of activated carbon/alginate -Cu composites began with a process of carbonization and activation with H3PO4 to produce Activated Carbon. Alginate using commercial alginate. Furthermore, the three ingredients were mixed until homogeneous and put into a 0.1M CuSO4 solution to produce beads. The characterization of FTIR characterization on the activated carbon/alginate-Cu composite contained the functional group OH group, triple C bond from stretching alkyne, C=C aromatic group, C-H alkane group, C-O group , the P=O stretching vibration of the P-O-C group and the alcohol OH group expressing the active carbon; there are functional groups of hydroxyl (OH), carboxyl, carbonyl, and C-O-C and –COOH bonds which represent alginate and there are OH functional groups, stretching C-H bonds, C-O stretching, stretching C-C. The KALg Cu13 sample had a peak at a wavelength of 2838.79 Cm-1 Where the four samples show the presence of C≡N groups
The Influence of Problem Based Learning and Discovery Learning Models Assisted by Learning Video Media on Student Learning Results and Activities on Redox Reaction Harahap, Aisyah Sari Dewi; Jasmidi, Jasmidi
Jurnal Pendidikan dan Pembelajaran Kimia Vol 13, No 3 (2024): Jurnal Pendidikan dan Pembelajaran Kimia
Publisher : Universitas Lampung

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Abstract

This study aims to analyze the differences in learning outcomes and student engagement between the Problem Based Learning (PBL) model and the Discovery Learning (DL) model supported by learning videos, as well as to identify the relationship between these factors in the context of redox reactions at MAS Muallimin Univa Medan. The sample consists of two classes randomly selected from the Class X MIA population: the PBL class (X MIA 2) and the DL class (X MIA 3). The research instruments included a multiple-choice test with 20 valid and reliable questions to assess learning outcomes and an observation sheet to evaluate student engagement. Data were analyzed using independent sample t-tests. Results indicated that the PBL class had lower scores in both engagement and learning outcomes compared to the DL class. Statistical analysis revealed significant differences in engagement and learning outcomes (α < 0.05), with a positive correlation between student engagement and learning outcomes. The conclusion of this study is that there are differences in learning outcomes and engagement between the two models, as well as a significant relationship between student activity and learning success, with contribution rates for engagement reaching 64.3% and 24.9%.Keywords: Learning Outcomes, Learning Activities, Problem Based Learning, Discovery Learning, Learning Videos¸ Redox Reactions.DOI: 10.23960/jppk.v13.i3.30701
Pelatihan Canva Berbasis Android dan Komputer Sebagai Inovasi Pembelajaran Pada Guru Sekolah di Yayasan Al-Hira Permata Nadirah Jasmidi, Jasmidi; Juwitaningsih, Tita; Sudrajat, Ajat; Siregar, Muhammad Isa; Nizam, Muhammad; Dewi, Ratna Sari; Yusfiani, Marnida; Daulay, Rabiah Afifah; Sinaga, Anggian Nurjelita; Elfany, Yuna; Sari, Mayang; Rachmi, Naila Syabina; Widya, Risa Dwy; Ritonga, Dina Arfah
Suluah Bendang: Jurnal Ilmiah Pengabdian Kepada Masyarakat Vol 24, No 2 (2024): Suluah Bendang: Jurnal Ilmiah Pengabdian kepada Masyarakat
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/sb.05430

Abstract

Guru – guru di Yayasan Al-Hira Permata Nadirah belum menguasai media pembelajaran berbasis TIK sepenuhnya, hal ini disebabkan terbatasnya pengetahuan yang dimiliki. Penggunaan canva merupakan solusi yang ditawarkan terhadap permasalahan yang dihadapi. dalam pembuatan berbagai jenis media pembelajaran. Tahapan kegiatan pengabdian yaitu: 1. Sosialisasi jenis media pembelajaran dan edukasi menggunakan canva; dan 2. Pelatihan pembuatan beberapa media pembelajaran dengan menggunakan canva. Kegiatan ini bertujuan guru – guru memiliki pengetahuan dan mahir dalam membuat berbagai media pembelajaran melalui canva. Adapun hasil yang diperoleh dari kegiatan pengabdian ini, guru – guru: 1. Memahami bahwa dengan menggunakan canva bisa membuat media pembelajaran dan 2. Mahir membuat berbagai media pembelajaran dari canva seperti handout dan video pembelajaran. Pemahaman guru dalam membuat media dengan canva diperoleh 91.7% dan kepuasa mitra terhadap kegiatan diperoleh 88.3%.Abstrak Guru – guru di Yayasan Al-Hira Permata Nadirah belum menguasai media pembelajaran berbasis TIK sepenuhnya, hal ini disebabkan terbatasnya pengetahuan yang dimiliki. Penggunaan canva merupakan solusi yang ditawarkan terhadap permasalahan yang dihadapi. dalam pembuatan berbagai jenis media pembelajaran. Tahapan kegiatan pengabdian yaitu: 1. Sosialisasi jenis media pembelajaran dan edukasi menggunakan canva; dan 2. Pelatihan pembuatan beberapa media pembelajaran dengan menggunakan canva. Kegiatan ini bertujuan guru – guru memiliki pengetahuan dan mahir dalam membuat berbagai media pembelajaran melalui canva. Adapun hasil yang diperoleh dari kegiatan pengabdian ini, guru – guru: 1. Memahami bahwa dengan menggunakan canva bisa membuat media pembelajaran dan 2. Mahir membuat berbagai media pembelajaran dari canva seperti handout dan video pembelajaran. Pemahaman guru dalam membuat media dengan canva diperoleh 91.7% dan kepuasa mitra terhadap kegiatan diperoleh 88.3%.
The Effectiveness of Kahoot Media And e-LKPD In the Application of the Discovery Learning Model for Acid & Base Teaching In Improving Students' Learning Outcomes Sihombing, Natasya Christie; Jasmidi, Jasmidi
Jurnal Beta Kimia Vol 5 No 1 (2025): Volume 5 Number 1, May 2025
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jbk.v5i1.21155

Abstract

This study aims to determine the effectiveness of using Kahoot media and e-LKPD based on the Discovery Learning model in improving student learning outcomes in acid-base solution material at SMA Negeri 10 Medan. The research method used is a quasi-experimental design with a Pretest-Posttest Non-Equivalent Control Group Design. The subjects of the study consisted of four classes: F1, F2, F3, and F5, with each class consisting of 35 students. Class F1 used Kahoot media, F2 used e-LKPD, F3 used a combination of both, and F5 served as the control class. The instrument used was an objective test in the form of 20 multiple-choice questions. The results showed that the average improvement in student learning outcomes was higher in the experimental classes than in the control class. The Independent z-test revealed a significant difference between the experimental and control classes. Thus, the use of Kahoot media and e-LKPD based on discovery learning has proven effective in improving student learning outcomes in acid-base material.
Implementasi Media Video Pembelajaran dan Media Powerpoint Terhadap Aktivitas dan Hasil Belajar Siswa Menggunakan PBL pada Materi Larutan Penyangga Hutagaol, Rahul; Jasmidi, Jasmidi; Dibyantini, Ratu Evina; Jahro, Iis Siti; Darmana, Ayi
Jurnal Pendidikan Kimia Universitas Riau Vol. 10 No. 1 (2025): Januari: Jurnal Pendidikan Kimia Universitas Riau
Publisher : Program Studi Pendidikan Kimia, FKIP, Universitas Riau

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Abstract

Penelitian ini bertujuan untuk mengetahui peningkatan hasil belajar dan aktivitas belajar siswa yang dibelajarkan dengan menggunakan model pembelajaran Problem Based Learning berbantuan media video pembelajaran pada materi larutan penyangga. Penelitian ini menggunakan dua sampel yang dipilih dengan menggunakan teknik purposive sampling yaitu terdiri dari kelas XI IPA 1 dan XI IPA 2 di SMA Negeri 1 Silimapunggapungga dan masing-masing berjumlah 34 siswa. Desain penelitian yang digunakan pada penelitian ini adalah Nonequivalent Control Group Design, yang melibatkan kelas eksperimen I dan eksperimen II. Instrument tes yang digunakan pada penelitian ini yaitu tes hasil belajar kimia siswa yang berbentuk pilihan ganda yang sudah divalidasi terlebih dahulu. Untuk uji hipotesis menggunakan uji Paired Sampel T-Test, uji Independent Sampel T-Test dan uji Korelasi antara hasil belajar dan aktivitas siswa. Dari hasil penelitian diperoleh pada uji hipotesis pertama dan kedua diperoleh nilai t!"#$%& > t#'()* yaitu sebesar 18,04>2,03 dan 7,04>2,03 yang menandakan bahwa peningkatan hasil belajar siswa yang dibelajarkan dengan menggunakan model pembelajaran Problem Based Learning berbantuan media video pembelajaran lebih tinggi dibandingkan menggunakan powerpoint pada materi larutan peyangga.Adapun hasil dan aktivitas belajar berkorelasi secara signifikan yang diperoleh dari nilai r!"#$%& > r#'()* yaitu 0,50 > 0,34.
Co-Authors AA Sudharmawan, AA Ajat Sudrajat Ashar Hasairin Ayi Darmana, Ayi Cahyati, Riska Daulay, Rabiah Afifah Elfany, Yuna Faradilla, Putri Fitri, Indah Harahap, Aisyah Sari Dewi Hutagaol, Rahul Iis Siti Jahro Juniar, Anna  Juwitaningsih, Tita Manullang, Ribka Sopia Martina Restuati Maulina, Rissah Mayang Sari Muhammad Nizam Nababan, Haryati Nasution, Hafni Indriati Pulungan, Ahmad Shafwan Rachmi, Naila Syabina Ratna Sari Dewi Ratu Evina Dibyantini Rini Selly, Rini Ritonga, Dina Arfah Sari, Lidia Mutia Sari, Maya Novita Sihombing, Natasya Christie Simarmata, Tiomelda Simson Tarigan Sinaga, Anggian Nurjelita Sintia, Melly Siregar, Muhammad Isa Sri Adelila Sari Syahirah, Atikah Nur Tanjung, Amar Lohot Widya, Risa Dwy Yusfiani, Marnida Zainuddin Muchtar Zubir, Moondra Zubir, Moondra