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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

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 ilmiahÂ Implementation of Guided Inquiry Model to Improve Behaviour Scientific and Studentâ€™s Chemistry Learning AchievementÂ AbstractThe aims of the research were to improve scientific behaviour and studentâ€™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 studentâ€™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 studentâ€™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

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

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

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

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.

Hubungan Konsentrasi Belajar dan Berpikir Kreatif Dengan Hasil Belajar Siswa Kelas VIII SMP pada Materi Pesawat Sederhana Agustin, Yesi; Mulyani, Bakti; Sarwanto, Sarwanto
INKUIRI: Jurnal Pendidikan IPA Vol 13, No 3 (2024): INKUIRI: Jurnal Pendidikan IPA
Publisher : Magister Pendidikan Sains Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/inkuiri.v13i3.80186

Kompetensi abad 21 menuntut kemampuan dan keterampilan siswa, keterampilan yang saat ini diperlukan diantaranya adalah berpikir kreatif. Penelitian ini bertujuan untuk mengetahui ada atau tidaknya hubungan yang positif dan signifikan antara konsentrasi belajar dan berpikir kreatif dengan hasil belajar secara parsial dan simultan. Penelitian ini adalah jenis penelitian kuantitatif dengan metode korelasional. Populasi pada penelitian ini yaitu semua siswa kelas VIII SMP Negeri 1 Baki Sukoharjo Tahun Ajaran 2022/2023. Teknik pengambilan sampel yaitu cluster random sampling. Sampel penelitian ini adalah siswa kelas VIII G dan VIII H. Pengumpulan data dengan teknik survei untuk konsentrasi belajar, berpikir kreatif dan hasil belajar afektif serta lembar tes untuk hasil belajar kognitif dan psikomotor. Analisis data menggunakan uji korelasi sederhana dan berganda dengan taraf signifikansi 5%. Berdasarkan penelitian dapat disimpulkan bahwa terdapat hubungan yang positif dan signifikan antara konsentrasi belajar dan berpikir kreatif dengan hasil belajar baik secara parsial atau simultan. Derajat hubungan antar variabel independen dengan variabel dependen baik secara parsial atau simultan berdasarkan nilai koefisien korelasi hasilnya menunjukan bahwa hubungan yang terbentuk termasuk pada kategori hubungan yang sangat kuat. Hasil pembahasan pada penelitian ini mengandung implikasi agar siswa meningkatkan konsentrasi belajar dan kemampuan berpikir kreatif agar hasil belajar IPA yang didapatkan optimal.21st century competencies require students' abilities and skills, the skills currently needed include creative thinking. This research aims to determine whether or not there is a positive and significant relationship between learning concentration and creative thinking and partial and simultaneous learning outcomes. This research is a type of quantitative research with correlational methods. The population in this study were all students in class VIII of SMP Negeri 1 Baki Sukoharjo for the 2022/2023 academic year. The sampling technique is cluster random sampling. The sample for this research was students in grades VIII G and VIII H. Data were collected using survey techniques for learning concentration, creative thinking and affective learning outcomes as well as test sheets for cognitive and psychomotor learning outcomes. Data analysis used simple and multiple correlation tests with a significance level of 5%. Based on the research, it can be concluded that there is a positive and significant relationship between learning concentration and creative thinking and learning outcomes, either partially or simultaneously. The degree of relationship between the independent variable and the dependent variable, either partially or simultaneously, based on the correlation coefficient value, the results show that the relationship formed is included in the category of a very strong relationship. The results of the discussion in this research contain implications for students to increase their learning concentration and creative thinking skills so that the science learning results obtained are optimal.

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

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

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.

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

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.

Enhancing creativity skills and student learning outcomes through the implementation of creative problem solving model with mind mapping on salt hydrolysis topic Sari, Bella Windira; Ariani, Sri Retno Dwi; Shidiq, Ari Syahidul; Mulyani, Bakti; Yamtinah, Sri; Masykuri, Mohammad; Ulfa, Maria; Saputro, Agung Nugroho Catur
Jurnal Pendidikan Kimia Vol. 16 No. 2 (2024): August
Publisher : Pascasarjana Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jpkim.v16i2.58765

In the face of increasing demands for 21st-century skills, chemistry education must advance to better support students in developing problem-solving abilities. Effective chemistry learning models are crucial in addressing this need. This study examines the impact of the Creative Problem Solving (CPS) model, equipped with the Mind Mapping method, on students' creative thinking skills and cognitive learning outcomes in salt hydrolysis. A quasi-experimental method with a pretest-posttest control group design was used in this research. Cluster random sampling was employed for sample selection. The sample consisted of 72 students from a school in Surakarta City. Data were collected using a test instrument with eight essay questions to assess creative thinking skills and six essay questions to evaluate cognitive learning outcomes. Non-parametric statistical tests were utilized for data analysis. The results of the Kruskal-Wallis™s test produce sig. (0.000 < 0.05) which means the hypothesis is accepted. The results showed that applying the CPS learning model with mind mapping affected students' creative thinking skills and cognitive learning outcomes so that it can be used as an alternative learning model to improve 21st-century skills. This research contributes new insights into applying the Mind Mapping-assisted CPS learning model for chemistry education.

The Impact of the Common Knowledge Construction Model (CKCM) Integrated with Ethnoscience and Podcasts on Science Process Skills in the Topic of Chemical Bonding Nurlatifah, Viki; Masykuri, Mohammad; Ciptonugroho, Wirawan; Yamtinah, Sri; Ulfa, Maria; Mulyani, Bakti; Saputro, Agung Nugroho Catur; Shidiq, Ari Syahidul
International Journal of Pedagogy and Teacher Education Vol 8, No 1 (2024): International Journal of Pedagogy and Teacher Education - April
Publisher : The Faculty of Teacher Training and Education (FKIP), Universitas Sebelas Maret, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/ijpte.v8i1.87665

Technological advances and competition in the 21st-century demand that students enhance their knowledge and skills. The Common Knowledge Construction Model (CKCM) can effectively influence students' academic skills and achievements in chemistry. This study examined the impact of CKCM integrated with ethnoscience and podcasts on improving science process skills and student learning outcomes. A quasi-experimental design with cluster random sampling was employed to select experimental and control groups from the population of specialization 11th-grade science program (five classes) in a senior high school in Boyolali Regency. Multiple-choice questions were used to measure science process skills and learning outcomes. Descriptive analysis and hypothesis testing were conducted using the Kruskal-Wallis test. The results revealed a significance value of 0.000 in both hypothesis tests for science process skills and learning outcomes. A significance value of less than 0.05 indicates that the application of CKCM positively impacts both variables. Integrating ethnoscience provides a deeper understanding by building culturally contextualized logical thinking. Supported by podcast media, it creates a dynamic and engaging learning environment that helps students actively construct their knowledge. This research contributes to developing the CKCM learning model mediated by podcasts to empower chemistry knowledge and science process skills, preparing students to meet the challenges of the 21st century.

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