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All Journal Edu-Sains: Jurnal Pendidikan Matematika dan Ilmu Pengetahuan Alam Jurnal Penelitian dan Pengembangan Pendidikan Jurnal Inovasi Pendidikan IPA Jurnal Penelitian Pendidikan IPA (JPPIPA) INKUIRI : Jurnal Pendidikan IPA Jurnal Pendidikan Kimia (JPKim) Indonesian Journal of Chemistry JKPK (Jurnal Kimia dan Pendidikan Kimia) Bubungan Tinggi: Jurnal Pengabdian Masyarakat Bulletin of Chemical Reaction Engineering & Catalysis Journal of Environment and Sustainability Education
Bakti Mulyani
Chemistry Education Department, Universitas Sebelas Maret, Surakarta
Agriculture, Biological Sciences & Forestry Astronomy Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Environmental Science Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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Penerapan model pembelajaran inkuiri terbimbing untuk meningkatkan sikap ilmiah dan prestasi belajar kimia siswa Murningsih, Ira Maya Tri; Masykuri, Mohammad; Mulyani, Bakti
Jurnal Inovasi Pendidikan IPA Vol 2, No 2: October 2016
Publisher : Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (544.658 KB) | DOI: 10.21831/jipi.v2i2.11196

Abstract

Penelitian ini bertujuan untuk meningkatkan sikap ilmiah dan prestasi belajar siswa menggunakan model pembelajaran Inkuiri Terbimbing pada materi pokok kelarutan dan hasil kali kelarutan kelas XI MIPA 3 SMA Negeri 5 Surakarta tahun ajaran 2015/2016. Penelitian ini merupakan Penelitian Tindakan Kelas yang terdiri dari dua siklus. Subjek penelitian adalah siswa kelas XI MIPA 3 SMA Negeri 5 Surakarta tahun pelajaran 2015/2016 yang terdiri dari 30 siswa. Objek penelitian adalah sikap ilmiah siswa dan prestasi belajar kimia siswa. Sumber data adalah siswa dan guru. Teknik pengumpulan data melalui metode observasi, wawancara, dokumen/arsip, angket dan tes. Teknik analisis yang digunakan adalah analisis deskriptif. Berdasarkan hasil penelitian didapatkan bahwa pencapaian sikap ilmiah pada siklus I sebesar 60% dan pada siklus II menjadi 93%. Peningkatan prestasi belajar aspek pengetahuan pada siklus I diperoleh ketuntasan belajar sebesar 63% dan pada siklus II menjadi 93%. Pada prestasi belajar siswa aspek sikap dan aspek keterampilan ketercapaian ketuntasan siswa pada siklus I sebesar 100%,sehingga tidak dilanjutkan ke siklus II karena semua indikator sudah terpenuhi.Kata Kunci: inkuiri terbimbing, kelarutan dan hasil kali kelarutan, penelitian tindakan kelas, prestasi belajar, sikap ilmiah Implementation of Guided Inquiry Model to Improve Behaviour Scientific and Student’s Chemistry Learning Achievement AbstractThe aims of the research were to improve scientific behaviour and student’s learning achievement by implementing guided inquiry model on primary material of solubility and solubility product at XI MIPA 3 students of SMA Negeri 5 Surakarta in the academic year of 2015/2016. This research was a Classroom Action Research (CAR) which was held in two cycles. The research subject was the students of class XI MIPA 3 at SMA Negeri 5 Surakarta in the academic year of 2015/2016 consisted of 30 students. The object of research was the behavior scientific and student’s chemistry learning achievement. Source of data were students and teacher. Data was obtained through observations, interviews, document, questionnaires, and test. The data were analyzed using technique of qualitative descriptive analysis. The result of the research can be seen from cycle I the percentage of student’s scientific behaviour was 60% and increased to 93% in the cycle II. Improved learning achievement on knowledge aspect from 63% in cycle I to 93% in cycle II. Attitude aspect and skill aspect, the improvement has reached 100%, so it was not continued to cycle 2 since all off the indicators have been accomplished before.Keywords: guided inquiry, solubility and solubility product, classroom action research, learning achievement, scientific behaviour
Constructive controversy dan inkuiri terbimbing sesuai representasi tetrahedral pembelajaran kimia ditinjau dari kemampuan berpikir kritis Siti Khoirun Annisak; Nurma Yunita Indriyanti; Bakti Mulyani
Jurnal Inovasi Pendidikan IPA Vol 5, No 1: April 2019
Publisher : Faculty of Mathematics and Natural Sciences, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (910.493 KB) | DOI: 10.21831/jipi.v5i1.20448

Abstract

Materi kimia kelarutan dan hasil kali kelarutan (Ksp) merupakan salah satu materi yang sulit sehingga dibutuhkan kemampuan berpikir kritis. Inovasi pembelajaran untuk meningkatkan kemampuan berpikir kritis sangat penting. Penelitian ini bertujuan untuk mengetahui: (1) pengaruh penerapan model pembelajaran Constructive Controversy (CC) dan inkuiri terbimbing berdasarkan representasi tetrahedral kimia terhadap prestasi belajar siswa pada materi Ksp; (2) pengaruh kemampuan berpikir kritis siswa terhadap prestasi belajar siswa pada materi Ksp; (3) interaksi antara penerapan model pembelajaran CC dan inkuiri terbimbing berdasarkan representasi tetrahedral kimia dengan kemampuan berpikir kritis terhadap prestasi belajar siswa pada materi Ksp. Penelitian ini merupakan penelitian eksperimen semu dengan desain faktorial 2x2. Hasil penelitian menunjukkan bahwa: (1) tidak ada pengaruh penerapan model pembelajaran CC dan inkuiri terbimbing berdasarkan representasi tetrahedral kimia terhadap prestasi belajar aspek pengetahuan, sikap dan keterampilan pada materi Ksp; (2) ada pengaruh kemampuan berpikir kritis siswa terhadap prestasi belajar siswa aspek pengetahuan tetapi tidak ada pengaruh terhadap aspek sikap dan keterampilan pada materi Ksp; (3) tidak ada interaksi antara penerapan model pembelajaran CC dan inkuiri terbimbing berdasarkan representasi tetrahedral kimia dengan kemampuan berpikir kritis terhadap prestasi belajar aspek pengetahuan, sikap, dan keterampilan pada materi Ksp. Constructive controversy and guided inquiry corresponding to the tetrahedral representation chemistry learning viewed from critical thinking ability AbstractChemical subject of solubility and solubility product constant (Ksp) is one of the materials that is difficult so it needs critical thinking ability. Learning innovation to improve critical thinking skill is very important. This research aimed to determine: (1) the influence of implementing Constructive Controversy (CC) and guided inquiry learning model based on chemical tetrahedral representation towards students achievement on Ksp subject matter; (2) the influence of the student’s critical thinking ability towards students achievement on Ksp subject matter; and (3) the interaction between implementing CC and guided inquiry learning model based on chemical tetrahedral representation with critical thinking ability towards students achievement on Ksp subject matter. This research was quasi experiment research with factorial design of 2x2. The results show that: (1) there is no influence of implementing CC and guided inquiry learning model based on chemical tetrahedral representation towards students achievement of cognitive, affective, and phycomotor aspect on Ksp subject matter; (2) there is an influence of the student’s critical thinking ability towards student’s achievement of cognitive aspect while there is no influence of critical thinking ability toward student’s achievement of affective and phycomotor aspect on Ksp subject matter; (3) there is no interaction between implementing CC and guided inquirylearning model based on chemical tetrahedral representation with  critical thinking ability towards students achievement of cognitive, affective, and phycomotor aspect on Ksp subject matter.
Secondary School Science Teacher Response to Minimum Competency Assessment: Challenges and Opportunities Sri Yamtinah; Budi Utami; Mohammad Masykuri; Bakti Mulyani; Maria Ulfa; Ari Syahidul Shidiq
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.v8i1.1075

Abstract

Teachers have an essential role in preparing students for Minimum Competency Assessment (MCA) or Asesmen Kompetensi Minimum (AKM). It takes preparation, readiness, and a good teacher's perception of the AKM so that the implementation of this program goes well. This study aims to analyze teachers' perceptions in secondary schools related to the opportunities and challenges of implementing AKM. A total of 66 secondary school science teachers participated as respondents in this study. Respondents in this study were randomly selected based on their willingness to fill out a given survey. The data collection instruments were six open-ended questions. This instrument is distributed online using Google Forms. The data obtained were then analyzed qualitatively and quantitatively. The results of this study reveal that the majority of science teachers have the perception that AKM policy is appropriate and suitable for implementation. However, the availability of supporting facilities and ICT literacy of students and teachers is considered a challenge that must be met. On the other hand, AKM and National Assessment (NA) are considered opportunities to improve the quality of education both nationally and locally in schools. This research is expected to reference the perception of science teachers about the challenges and opportunities for implementing AKM policies in junior high schools
Penguatan Kemampuan Guru-Guru Kimia SMA di Surakarta dalam Menyiapkan Instrumen AKM Literasi Membaca dan Numerasi berbasis Sains Kimia Ari Syahidul Shidiq; Sri Yamtinah; Mohammad Masykuri; Maria Ulfa; Bakti Mulyani
Bubungan Tinggi: Jurnal Pengabdian Masyarakat Vol 4, No 4 (2022)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/btjpm.v4i4.6158

Abstract

Asesmen Kompetensi Minimum (AKM) merupakan bagian dari Asesmen Nasional yang merepresentasikan survey pengetahuan siswa dan kualitas Pendidikan Nasional. Pada AKM diukur kompetensi berpikir atau bernalar siswa ketika membaca teks (literasi) dan menghadapi persoalan yang membutuhkan pengetahuan matematika (numerasi). Selama ini guru-guru biasa menyusun instrumen tes yang berorientasi pada penguasaan materi, dan belum terbiasa untuk mengembangkan instrumen yang berorientasi pada literasi membaca dan numerasi. Terlebih, pada guru-guru Kimia yang dianggap memiliki kontribusi kecil pada keterampilan literasi dan numerasi. Oleh karena itu, pengabdian ini bertujuan untuk melakukan penguatan kemampuan guru-guru kimia SMA di Kota Surakarta dalam menyiapkan instrumen AKM literasi membaca dan numerasi berbasis sains kimia.  Kegiatan pengabdian akan dilakukan melalui pelatihan dengan bentuk penyuluhan, focus group discussion (FGD) dan pendampingan menyusun butir-butir soal instrumen literasi membaca dan numerasi berbasis konteks sains kimia. Sebanyak 33 orang guru kimia dari Surakarta berpartisipasi aktif sebagai peserta pelatihan. Berdasarkan hasil evaluasi terhadap program pengabdian yang dilakukan, sebanyak 63.6% peserta sangat setuju, dan 36.4% peserta setuju bahwa kegiatan yang dilakukan sangat sesuai dengan kebutuhan mereka. Selain itu, sebanyak 72.7% peserta sangat setuju, dan 27.3% setuju bahwa kegiatan pengabdian ini dapat meningkatkan pengetahuan dan keterampilan mereka untuk mengembangkan instrumen literasi membaca dan numerasi berbasis sains kimia. Hasil ini diharapkan dapat menjadi acuan bagi para guru kimia dan bidang lainnya untuk dapat mengembangkan instrumen AKM berbasis konteks materi pelajaran
Socio-Scientific Issues Using Two-Tier Instruments Based on Literacy Analysis Fadhilah, Zahra Ayu; Ulfa, Maria; Indriyanti, Nurma Yunita; Yamtinah, Sri; Shidiq, Ari Syahidul; Mulyani, Bakti; Masykuri, Mohammad
Jurnal Penelitian dan Pengembangan Pendidikan Vol. 7 No. 3 (2023): October
Publisher : LPPM Undiksha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23887/jppp.v7i3.63763

Abstract

Chemical literacy is important for someone to have to understand scientific problems that occur in everyday life so that they can choose wise decisions in solving them. The objectives to be achieved in this study are to analyze the students' chemical literacy skills on acid-base material using a two-tier multiple-choice instrument SSI based. The research design used is a descriptive qualitative method. The sample in this study was taken or selected using a purposive sampling technique. Data collection techniques are used by researchers in the form of tests and interviews. The steps taken to analyze the data are data collection, data reduction, data presentation, and drawing conclusions. The results of this study indicate that 1. The results of the students' chemical literacy test on acid-base material showed that as many as 15% of students were in the high category, 62% of the students were in the medium category, and 23% of the students were in a low category. 2. Students' chemical literacy was sufficient in the aspect of content (79%), context (70%), HOTS (69%), and attitudes (66%). The sub-indicator that students mastered the most in context indicators was analyzing the strategies and benefits of chemical applications. In the HOTS indicator, the students' most dominant skills are asking questions and seeking information on chemical issues. The attitude indicator shows the lowest achievement among other indicators due to the lack of student interest in issues related to chemistry.
Hexagonal TiO2/SiO2 Porous Microplates for Methylene Blue Photodegradation Ulfa, Maria; Anggreani, Cindy Nur; Mulyani, Bakti; Sholeha, Novia Amalia
Bulletin of Chemical Reaction Engineering & Catalysis 2024: BCREC Volume 19 Issue 1 Year 2024 (April 2024)
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20120

Abstract

Hexagonal TiO2/SiO2 Porous Microplates have been successfully synthesized by incorporation of Ti precursors into SiO2 synthesized from Si precursors in a gelatin-CTAB mixture via the hydrothermal method. The prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), EDX, nitrogen adsorption-desorption and Fourier transform infrared spectroscopy (FTIR). The sample has a surface area of 735 m2/g, pore volume of 0.67 cc/g, and pore diameter of 3.2 nm, according to the results of the characterization of hexagonal TiO2/SiO2 porous microplates. The transformation of SiO2 microspheres into hexagonal TiO2/SiO2 porous microplates is revealed by a microparticle size increase of 84% and the transition of Si−O bonds into Ti−O and Si−O as measured by FTIR. The photocatalytic activity of hexagonal TiO2/SiO2 porous microplates resulted in 81.15% photodegradation of methylene blue under UV light irradiation within 60 min, which was 21 % better than SiO2. Copyright © 2024 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).
Characteristics analysis of integrated science question items with the rasch model Yamtinah, Sri; Ashadi, Ashadi; Mulyani, Bakti; Utami, Budi; Kristyasari, Marantika Lia
Journal of Environment and Sustainability Education Vol. 1 No. 1 (2023)
Publisher : Education and Development Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62672/joease.v1i1.1

Abstract

This study aims to analyze the characteristics of the Integrated Science question item. This is quantitative descriptive research. The research subjects were 90 students of class VIII Junior High School in the high, medium, and low categories in Surakarta City. The characteristics of the items were analyzed using the Winstep program with the Rasch Model. Based on data analysis, the results obtained are: 1) the validity of conformity level of the items is valid; 2) the reliability value of the students was 0,79 which was sufficient, the reliability of the items was 0,93 which was very good, and the reliability between the students and the items (Alpha Cronbach) was 0,81 which was very good; 3) the value of separation item > value separation of students; 4) the distribution of the difficulty level of the questions is generally in the medium category; and 5) the difference power of the questions in the very good category is 35%, 25% in the good, 30% in the moderate, and 10% in the unable to distinguish category. Thus, it can be concluded that the analysis of the characteristics of the Integrated Science question items using the Rasch Model is considered good.
Strengthening ASEAN STEAM Collaboration: Empowering Chemistry Teachers through Training on Developing STEAM-Based Assessment Instruments Sri Yamtinah; Bakti Mulyani; Mohammad Masykuri; Maria Ulfa; Ari Syahidul Shidiq
Bubungan Tinggi: Jurnal Pengabdian Masyarakat Vol 6, No 4 (2024)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/btjpm.v6i4.11686

Abstract

STEAM (Science, Technology, Engineering, Art, and Mathematics) is a learning approach that encourages students to think broadly about real-world problems. However, the limited knowledge of chemistry teachers about the STEAM-based learning and assessment process causes this approach to be rarely implemented. This service aims to train teachers' skills to develop STEAM-based assessment instruments. The workshop method is used with implementation stages including preparation, implementation, evaluation, and reporting. This activity was carried out in a hybrid manner, with presentations by lecturers from Universiti Sains Malaysia and Sebelas Maret University. Participants in this activity were 68 chemistry teachers from various regions of Indonesia. Test instruments totaling 15 questions in the pretest and posttest, as well as questionnaire instruments totaling 18 questions, were used to evaluate the results of this training. As a result, participants' knowledge and skills about STEAM learning increased after the training. In addition, as many as 44% of participants are very interested in implementing STEAM in the chemistry learning process in schools. As evaluation materials, participants gave suggestions to increase the explanation time and provide more examples of STEAM-based instruments.
Pengaruh Model Pembelajaran Inkuiri Terbimbing terhadap Keterampilan Proses Sains Siswa Kelas VIII Materi Pesawat Sederhana: The Influence of the Guided Inquiry Learning Model on the Science Process Skills of Class VIII Students with Simple Plane Material Ristiani, Nia Pratama; Mulyani, Bakti; Supurwoko
Edu-Sains: Jurnal Pendidikan Matematika dan Ilmu Pengetahuan Alam Vol. 14 No. 1 (2025): Januari 2025
Publisher : Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jmpmipa.v14i1.34625

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran inkuiri terbimbing terhadap keterampilan proses sains peserta didik kelas VIII SMPN 4 Karanganyar pada materi pesawat sederhana. Penelitian ini termasuk jenis penelitian kuasi eksperimen dengan desain penelitian non-equivalent control group. Sampel dalam penelitian ini adalah kelas VIII B sebagai kelas eksperimen menerapkan model inkuiri terbimbing dan kelas VIII H sebagai kelas kontrol. Teknik pengambilan sampel menggunakan cluster random sampling. Teknik pengumpulan data menggunakan tes pilihan ganda keterampilan proses sains dengan indikator yang meliputi aspek mengamati, mengelompokkan, menafsirkan, meramalkan,  mengajukan pertanyaan dan aspek merumuskan hipotesis untuk keterampilan proses sains dasar, merencanakan percobaan, menggunakan alat/bahan, menerapkan konsep dan berkomunikasi untuk keterampilan proses sains terpadu. Uji hipotesis yang digunakan adalah uji t. Penelitian ini dapat disimpulkan bahwa terdapat pengaruh penggunaan model pembelajaran inkuiri terbimbing terhadap keterampilan proses sains siswa kelas VIII SMP. Didapatkan nilai Sig. 0,000 kurang dari 0,05 sehingga H0 ditolak yang artinya terdapat pengaruh model inkuiri terbimbing dalam meningkatkan keterampilan proses sains peserta didik. Selain itu dilihat dari perbedaan nilai n-gain, dimana kelas eksperimen memperoleh nilai n-gain sebesar 0,56 dengan kategori sedang. Implikasi dari penelitian ini menunjukkan bahwa penerapan model pembelajaran inkuiri terbimbing memiliki pengaruh positif terhadap peningkatan keterampilan proses sains siswa kelas VIII SMP. Oleh karena itu, penerapan model pembelajaran inkuiri terbimbing dapat dijadikan alternatif yang baik dalam upaya peningkatan kualitas pembelajaran sains di sekolah, terutama dalam mengembangkan keterampilan proses sains yang penting bagi siswa. Diharapkan temuan ini dapat mendorong guru untuk lebih mengoptimalkan penggunaan model ini dalam kegiatan pembelajaran di kelas.
Metal Oxide for Fast Adsorption System in the Methylene Blue Removal Ulfa, Maria; Oktaviani, Sukmaningrum Latifah; Mulyani, Bakti; Sholeha, Novia Amalia
Indonesian Journal of Chemistry Vol 25, No 2 (2025)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.92617

Abstract

Rapid adsorption systems utilizing metal oxide-based materials represent a promising technology to address adsorption challenges, particularly for the effective removal of methylene blue (MB). These systems enhance the continuous MB elimination process by leveraging metal oxide (MO)-based adsorbents with high accessibility and optimized adsorption conditions. The preparation process involves selecting metal oxides with high surface area and strong adsorbate affinity, ensuring efficient interaction with MB. Process parameters such as adsorbent dosage, contact time, temperature, pH, initial concentration, waste volume, and pressure are modified to develop a rapid and sustainable system for MB removal. This configuration enables efficient application in water treatment, achieving faster and more effective MB degradation. Moreover, the scalability of MO-based adsorbents ensures low-cost production and broad applicability, further supporting sustainable waste management. This review critically evaluates experimental findings from various studies on MO-based materials in rapid adsorption systems, highlighting their potential for large-scale implementation in wastewater treatment to mitigate environmental pollution.
Co-Authors Agung Nugroho Catur Saputro Agung Nugroho Catur Saputro Agung Nugroho Catur Saputro Anggreani, Cindy Nur Ari Syahidul Shidiq Ari Syahidul Shidiq Ashadi Aulia Rahmah Bella Windira Sari Budi Utami Endang Susilowati Fadhilah, Zahra Ayu Lina Mahardiani Maria Ulfa Maria Ulfa Mohammad Masykuri Mohammad Masykuri Murningsih, Ira Maya Tri Nunuk Nurcahyani A Nurma Yunita Indriyanti Oktaviani, Sukmaningrum Latifah Ristiani, Nia Pratama Salma Fauzia Wardani Sari, Bella Windira Sarwanto Sarwanto Sholeha, Novia Amalia Siti Khoirun Annisak Sri Retno Dwi Ariani Sulistyo Saputro Supurwoko Ulfa, Maria Yamtinah, Sri Yesi Agustin Yuli Iswanti