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All Journal Jurnal Periodic Jurusan Kimia UNP Biomedika Jurnal Progres Kimia Sains Jurnal Administrasi Pendidikan Indonesia Communications in Science and Technology Chemistry Indonesian Journal of Chemical Research JURNAL PENDIDIKAN TAMBUSAI Eksakta : Berkala Ilmiah Bidang MIPA Pelita Eksakta Indonesian Journal of Chemical Science and Technology SECONDARY : Jurnal Inovasi Pendidikan Menengah (JIPM) Entalpi Pendidikan Kimia BIOCHEPHY: Journal of Science Education CHEDS: Journal of Chemistry, Education, and Science Verstek Journal of Educational Sciences MASALIQ: Jurnal Pendidikan dan Sains Entalpi Pendidikan Kimia Chimica Didactica Acta : Journal of Chemistry and Chemistry Education Journal of Global Research Education Jurnal Pendidikan MIPA
Desy Kurniawati
Jurusan Kimia FMIPA Universitas Negeri Padang
Religion Agriculture, Biological Sciences & Forestry Humanities Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Energy Engineering Environmental Science Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Physics Social Sciences Other

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DEVELOPMENT OF STUDENT WORKSHEETS ON THE PERIODIC SYSTEM OF ELEMENTS BASED ON CONTEXTUAL TEACHING AND LEARNING FOR PHASE-E SENIOR HIGH SCHOOL Risty, Chika Mei; Kurniawati, Desy; Hardeli, Hardeli; Zainul, Rahadian; Syolendra, Dwi Finna
Chimica Didactica Acta Vol 12, No 2: December 2024
Publisher : FKIP USK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24815/jcd.v12i2.42002

Abstract

This study aimed to produce teaching materials in student worksheets based on contextual teaching and learning and to determine the validity and practicality of the student worksheets developed. The research method used is educational design research (EDR), with the Plomp development model carried out until the validity and practicality test stages are achieved. This development research shows that the contextual teaching and learning-based student worksheets developed are valid and practical. This is supported by the validation results, which have an average value of 0.91 and are included in the very valid category. The practicality results obtained from the small group test of students get a percentage of 95%, and the percentage result from the teacher is 92%, which is included in the Highly practical category. These results indicate that the student worksheets developed are feasible to be applied to learning to help students' understanding of concepts on the material of the periodic system of elements and encourage students to become active, creative, and critical learners. The results of this study indicate that the student worksheets developed are suitable for use in the learning process on the material of the periodic system of elements in phase E Senior High School.
Development of Guided Discovery Learning Voltaic Cell E-LKPD for Class XII SMA/MA Students Yola, Servi Farda; Kurniawati, Desy
Journal of Educational Sciences Vol 7. No. 1. January 2023
Publisher : FKIP-Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.7.1.p.110-121

Abstract

This study aims to develop voltaic cell E-LKPD based on guided discovery learning. This research is research and development or Research and Development (R&D) which uses the Plomp development model. This development model consists of three stages including initial research, prototype formation, and the assessment stage. The research instrument was in the form of a questionnaire sheet. The E-LKPD was validated by 5 validators including 4 chemistry lecturers at FMIPA UNP and 1 chemistry teacher at SMA Negeri 1 Batang Anai. This data was analyzed using the Aiken'V scale to test validity, practicality test was analyzed using the percent formula, effectiveness test using the N-Gain formula. The results of the content validation test average value of 0.85 in the high category. Construct validation test results with an average value of 0.89 in the high category. Media validation test results with an average value of 0.82 in the high category. The practicality test results of students and teachers with aspects of ease of use, time efficiency, and benefits respectively with an average of 87% and 96% in the very practical category. The results of the effectiveness test were obtained with a value of 0.71 in the high category. The results of the answers to the voltaic cell E-LKPD based on guided discovery learning obtained an average of 84. Based on the results of the study it can be concluded that the developed voltaic cell E-LKPD based on guided discovery learning is valid, practical, and effective.
Application of aloe vera gel edible coating for Minimizing damage to tomatoes in the farming group Usaha Bersama Pemuda Solok Saiyo Sakato, Nagari Surian, Solok Regency Parbuntari, Hesty; Amelia, Kiki; Kurniawati, Desy; Mahmud, Mahmud; Martha, Rahma Dyan
Pelita Eksakta Vol 7 No 2 (2024): Pelita Eksakta, Vol. 7, No. 2
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol7-iss2/250

Abstract

The most common profession among Surian people is in the agricultural sector, such as tomato farmers. The farmers who are partners in PKM activities are tomato farmers in Nagari Surian, Pantai Cermin District, Solok Regency. Tomato farmers often experience losses because when the tomato harvest season arrives the product is abundant, while demand is constant. Farmers will just let the tomatoes rot because the harvesting process will take up a lot of energy and money. This activity focuses on efforts to control the quality of post-harvest tomatoes by using a coating technique based on edible natural ingredients (edible coating) with the natural ingredient aloe vera. The stages of this activity are divided into three activities, namely initial activities which include analysis of partner needs, core (providing material and practice) and final (program evaluation). Based on the results of a questionnaire given to partners as many as 20 people with an age range of 25 – 46 years and consisting of men and women, 90% of participants agreed that this edible coating could be used to solve the problem of tomatoes that rot easily after harvest.
Biosorption of Methylene Orange Dye using Langsat Shell by Batch Method Kurniawati, Desy; Lestari, Intan; Tarmizi, Fadhilah; Pernadi, Niza Lian; Iqbal, Anwar
EKSAKTA: Berkala Ilmiah Bidang MIPA Vol. 24 No. 03 (2023): Eksakta : Berkala Ilmiah Bidang MIPA (E-ISSN : 2549-7464)
Publisher : Faculty of Mathematics and Natural Sciences (FMIPA), Universitas Negeri Padang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/eksakta/vol23-iss03/419

Abstract

Liquid waste is a major problem in the textile industry environment that has the most widespread influence because physical and aquatic characteristics can have a negative impact on waters. Most of the liquid waste produced by batik comes from the dyeing process and environmental pollution. If it is disposed of directly into the environment without prior processing, the environment has a limited ability to degrade dyestuffs. One alternative method to remove the dye in water contaminated with methyl orange is biosorption using a cheap and easily available biosorbent, such as a langsat shell. This study used a batch method with variations in pH, solution concentration, particle size, stirring speed, and contact time. The results of each variation carried out obtained the optimum conditions for the absorption of Methyl Orange, namely at: pH 4, concentration 150 mg/L, and particle size 150 μm. The adsorption isotherm study was carried out, the Langmuir equation yielded a regression coefficient value that was close to one (R2 = 0.9964) so that it could be said to be better with a maximum absorption capacity of 3.1164 mg/g
Integrative Review Analisis Kebutuhan Pengembangan Kurikulum IPA Terintegrasi Pendidikan Mitigasi Bencana di Indonesia Mawardi; Kurniawati, Desy
Journal of Global Research Education Vol. 2 No. 2 (2025)
Publisher : Akademi Akuntansi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62194/we5cfj47

Abstract

Artikel ini melakukan analisis kebutuhan (needs analysis) untuk pengembangan kurikulum IPA yang terintegrasi dengan pendidikan mitigasi bencana di Indonesia menggunakan pendekatan integrative review. Latar belakang penelitian ini adalah kondisi geografis Indonesia yang rentan terhadap bencana alam, sehingga memerlukan upaya komprehensif dalam meningkatkan kesiapsiagaan masyarakat melalui pendidikan. Tujuan penelitian ini adalah untuk mengidentifikasi kebutuhan dan peluang untuk pengembangan kurikulum IPA yang terintegrasi dengan pendidikan mitigasi bencana. Metode penelitian ini menggunakan pendekatan integrative review, yang menggabungkan tinjauan literatur secara sistematis dengan analisis data empiris dari berbagai sumber. Hasil penelitian menunjukkan bahwa integrasi pendidikan mitigasi bencana dalam kurikulum IPA masih belum optimal, meskipun telah ada upaya-upaya yang dilakukan baik di tingkat kebijakan maupun praktik pembelajaran. Penelitian ini mengungkapkan beberapa temuan penting, termasuk perlunya pengembangan kurikulum yang koheren, penggunaan pendekatan pembelajaran yang inovatif, penguatan kapasitas guru, serta kemitraan yang kuat antara sekolah dan pemangku kepentingan terkait. Dengan demikian, penelitian ini memberikan landasan empiris untuk pengembangan kurikulum IPA yang lebih responsif terhadap kebutuhan mitigasi bencana di Indonesia.
Modification Of High-Protein Healthy PMT (Supplementary Feeding) As An Effort To Prevent Stunting And Malnutrition In Nagari Kamang Hilia, Kamang Mudiak District, Agam Mulia, Melindra; Yuniarti, Elsa; Kurniawati, Desy; Stiadi, Della Rosalyna; Gazali, Fauzana; Yuranda, Fitri; Putri, Raisya Pratama; Safitri, Nadila
Pelita Eksakta Vol 8 No 1 (2025): Pelita Eksakta, Vol. 8, No. 1
Publisher : Fakultas MIPA Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/pelitaeksakta/vol8-iss01/282

Abstract

Stunting is a chronic malnutrition problem caused by inadequate nutritional intake over a long period of time, resulting in impaired optimal physical and cognitive development. The problem of stunting and malnutrition requires coordination between various parties to overcome it. In Agam Regency, especially Nagari Kamang Hilia, the stunting rate is still relatively high, with a prevalence of 24.6%, according to the latest Indonesian Nutrition Status Survey (SSGI). One of the factors influencing this is the high cost of nutritious food, which reduces the interest of mothers in serving healthy menus for the family. Therefore, education and training on nutritious food processing with alternative food sources is needed to increase public understanding. This program targets posyandu cadres and PKK mothers as the main targets, with the aim of providing knowledge about the importance of fulfilling nutrition to prevent stunting and malnutrition. The results of this activity are expected to increase awareness and interest of mothers in processing nutritious food that is attractive and liked by families, especially children.
EFEKTIVITAS MODUL BERBASIS PBL TERINTEGRASI STEM MATERI KESETIMBANGAN KIMIA TERHADAP HASIL BELAJAR SISWA Barkah, Fitri Annisa; Kurniawati, Desy
BIOCHEPHY: Journal of Science Education Vol. 5 No. 1 (2025)
Publisher : MO.RI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52562/biochephy.v5i1.1597

Abstract

Kecenderungan siswa dalam melihat kimia sebagai ilmu yang dipenuhi dengan rumus-rumus kompleks tanpa keterkaitan nyata dengan kehidupan sehari-hari, persepsi ini dapat berdampak negatif terhadap minat belajar siswa, yang pada akhirnya memengaruhi hasil belajar mereka. Penelitian ini bertujuan untuk. Penelitian ini bertujuan untuk mengkategorikan Tingkat efektivitas penggunaan modul berbasis Problem Based Learning terintegrasi STEM pada materi kesetimbangan kimia. Penelitian ini merupakan penelitian Quasi Eksperimental dengan desain Non-equivalent Control Group Design. Hasil efektivitas pretest dan posttest dari uji N-Gain hasil belajar siswa adalah 0,724, yang termasuk dalam kategori ‘Cukup Efektif’, dan hasil uji Mann-Whitney atau uji U pada Asymp. Sig = 0,00037<0,05, itu berarti pada hasil belajar kelas kontrol dan kelas eksperimen memiliki perbedaan yang signifikan. Berdasarkan hasil penelitian, ditemukan bahwa modul berbasis Problem Based Learning terintegrasi STEM pada materi kesetimbangan kimia efektif untuk meningkatkan hasil belajar peserta didik.
PENGEMBANGAN INSTRUMEN TES BERBASIS GAME EDUKASI WORDWALL PADA MATERI LAJU REAKSI FASE F SMA/MA Rantika Putri, Dwi; Kurniawati, Desy
BIOCHEPHY: Journal of Science Education Vol. 5 No. 1 (2025)
Publisher : MO.RI Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52562/biochephy.v5i1.1616

Abstract

Tes merupakan teknik penilaian untuk mengukur kemampuan, pemahaman serta pengetahuan peserta didik. Dalam kegiatan pembelajaran, diperlukan instrumen tes untuk mengukur aspek kognitif terhadap materi yang diajarkan. Penelitian ini merupakan penelitian Research and Development (R&D) dengan model pengembangan 4D, yang bertujuan untuk mengembangkan instrumen tes berbasis game edukasi wordwall pada materi laju reaksi dengan meninjau aspek validitas, reliabilitas, tingkat kesukaran, daya pembeda dan praktikalitas. Hasil validasi menunjukkan tingkat kevalidan aspek materi, bahasa, dan media berturut-turut 90,6%, 91,6%, dan 89,3%. Instrumen tes ini memiliki validitas logis sebesar 95,54%. Uji coba menghasilkan 24 dari 30 soal valid dan reliabilitas 0,88 dengan kategori sangat tinggi. Uji respon peserta didik 83,3% dan respon guru 97,3% dengan kategori sangat praktis. Hasil penelitian ini menunjukkan bahwa instrumen tes berbasis game edukasi wordwall pada materi laju reaksi yang dikembangkan telah memenuhi kriteria valid dan praktis.
Development of Guided Discovery Learning Voltaic Cell E-LKPD for Class XII SMA/MA Students Yola, Servi Farda; Kurniawati, Desy
Journal of Educational Sciences Vol. 7 No. 1 (2023): Journal of Educational Sciences
Publisher : FKIP - Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jes.7.1.p.110-121

Abstract

This study aims to develop voltaic cell E-LKPD based on guided discovery learning. This research is research and development or Research and Development (R&D) which uses the Plomp development model. This development model consists of three stages including initial research, prototype formation, and the assessment stage. The research instrument was in the form of a questionnaire sheet. The E-LKPD was validated by 5 validators including 4 chemistry lecturers at FMIPA UNP and 1 chemistry teacher at SMA Negeri 1 Batang Anai. This data was analyzed using the Aiken'V scale to test validity, practicality test was analyzed using the percent formula, effectiveness test using the N-Gain formula. The results of the content validation test average value of 0.85 in the high category. Construct validation test results with an average value of 0.89 in the high category. Media validation test results with an average value of 0.82 in the high category. The practicality test results of students and teachers with aspects of ease of use, time efficiency, and benefits respectively with an average of 87% and 96% in the very practical category. The results of the effectiveness test were obtained with a value of 0.71 in the high category. The results of the answers to the voltaic cell E-LKPD based on guided discovery learning obtained an average of 84. Based on the results of the study it can be concluded that the developed voltaic cell E-LKPD based on guided discovery learning is valid, practical, and effective.
PENENTUAN KONDISI OPTIMUM DESORPSI KATION Cd2+ DARI ADSORBEN SILIKA GEL-GPTMS TERMODIFIKASI SULFONAT Afifi, Rayhanil; Oktavia, Budhi; Kurniawati, Desy; Putra, Ananda
CHEDS: Journal of Chemistry, Education, and Science Vol 8, No 2 (2024)
Publisher : Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/cheds.v8i2.9592

Abstract

Silica gel mengandung situs aktif berupa gugus silanol (Si-OH) dan siloksan (Si-O-Si), sehingga berguna untuk proses adsorpsi ion logam. Pada penelitian ini silika GPTMS termodifikasi sulfonat digunakan sebagai adsorben kation kadmium. Proses desorpsi dilakukan untuk menghilangkan kation kadmium dari adsorben Silika GPTMS Sulfonat, sehingga adsorben dapat digunakan kembali. Tujuan dari penelitian ini adalah untuk mengetahui kondisi optimal desorpsi ion Cd2+dengan memvariasikan jenis bahan penyerap, konsentrasi, dan laju alir. Hasil penelitian menunjukkan berat adsorpsi sebesar 0,1853 mg dengan persentase 96,81%. Pada proses desorpsi eluen desorpsi terbaik untuk pelepasan Cd2+ adalah CaCl2 0,025M, dengan persentase desorpsi sebesar 96,49% dengan berat terdesorpsi sebesar 0,1787 mg Cd2+. Pada konsentrasi CaCl2 yang divariasikan, kondisi optimum diperoleh pada konsentrasi 0,05 M dengan persentase desorpsi 100% dan berat terdesorpsi sebesar 0,1793 mg Cd2+. Sedangkan pada laju alir, kondisi optimum diperoleh pada 1 mL/menit dengan persentase desorpsi 100%.
Co-Authors Addawiyah, Nadiyatul Afifi, Rayhanil Afrilia, Yoni Aini, Syamsi Ali Amran Alizar Alizar, Alizar Alkhaira, Nisa Andini, Namira Tri Anjelia, Mariza Arifah Sri Wahyuni Bali Yana Fitri Barkah, Fitri Annisa Benti Etika, Sri Budhi Oktavia Darussalam, Rahni Della Rosalynna Stiadi Dwi Finna Syolendra DWI RAMADHANI Edi Nasra Elsa Yuniarti Elviana Clara Manalu, Volma Em Sutrisna Fadhilah Fadhilah Fariz Adzani, Rivaldo Fatmawati, Rani Fauzana Gazali Fitri Amelia Fitria Ningsih, Rahmadhani Frista, Nada Gama Yoga, Nugroho Hamid, Syafira Putri Haqqu, Annisa Hardeli Hardeli Hardianti, Amirah Salsabila Harmaiyani, Risky Hary Sanjaya Hasyim, Rahmat Heditama, Muhammad Raffi Hidayah, Rahma Holidayani Husna, Miftahul Ideal, Flami Luthfianisa Ifan Rivaldo Ikhsany, Diva Indang Dewata Indasyach Moreno, Zavi Intan Lestari Iqbal, Anwar Iryani Iryani Istiqamah, Siti Sarah Iswendi iswendi Jayawarsa, A.A. Ketut Jeningsih Karmila, Aroma Kartika, Reka Khairurrazak, Khairurrazak Kiki Amelia, Kiki Laily Nurliana Latisma, Latisma Lestari, Kardina Mahmud Mahmud Maida, Margarita Claudya Mardhatillah Nadien, Rahmah Marlini, Rahmida Martha, Rahma Dyan Mawardi Miftahul Khair Muhammad Rayhan Mulia, Melindra Mutia, Nuraini Cut Nadia Nadia Nandi, Mila Lusy Tri Nizar, Umar Kalmar Nofianti, Nora Novela, Riana Nur Fitri Nurhayati Nurhayati Nurrahma, Yashinta Parbuntari, Hesty Pasaribu, Nur Rizky Patricia, Popi Pernadi, Niza Lian Puja, Puja Putra Mustafit, Alvian Putra, Ananda Putri Rinjani, Mitna Sekar Putri, Anisa Dwi Putri, Raisya Pratama Rahadian Zainul Rahmah, Suci Adila Rahmi, Maulidia Arsyta Rantika Putri, Dwi Riga Rio Budi Syaka, Darwin Risnawaty Risnawaty Risty, Chika Mei Romy Dwipa Yamesa Away Rosalinda, Gigih Devy Saddam Husein, Saddam Safitri, Nadila Santoso, S.H., M.Hum, Bambang Sari, Trisna Kumala Sepriyeni Oktavia, Syntia Septian Budiman Sherly Kasuma Warda Ningsih Sri Benti Etika Stiadi, Della Rosalyna Sukarno, Ragil Suprawati, Vina Suryani, Okta Syamsul Arifin Tarmizi, Fadhilah Ulianas, Alizar Veronita, Silvi Waarsyat, Fadli Yeni, Isra Yerimadesi Yohanes Gunawan, Yohanes Yola, Servi Farda Yuranda, Fitri Zakiya, Ratu