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All Journal International Journal of Evaluation and Research in Education (IJERE) Matematika dan Sains Tadris: Jurnal keguruan dan Ilmu Tarbiyah Indonesian Journal of Educational Review (IJER) Jurnal Tadris Kimiya Seminar Nasional Pendidikan IPA Orbital: Jurnal Pendidikan Kimia JKPK (Jurnal Kimia dan Pendidikan Kimia) Jurnal Riset Pendidikan Kimia (JRPK) Jurnal Lentera Pendidikan Pusat Penelitian LPPM UM Metro Jurnal Riset Sains dan Kimia Terapan Edunesia : jurnal Ilmiah Pendidikan Journal of Educational Chemistry (JEC) ABSYARA: Jurnal Pengabdian Pada Masyarakat International Journal of Social and Management Studies (IJOSMAS) Devotion: Journal of Research and Community Service International Journal of STEM Education for Sustainability Chemistry and Materials Prosiding Seminar Nasional Pengabdian Kepada Masyarakat LAVOISIER: Chemistry Education Journal Mitra Teras: Jurnal Terapan Pengabdian Masyarakat Journal of Educational Management and Learning LAVOISIER: Chemistry Education Journal Proceeding of the International Conference on Global Education and Learning

Maria Paristiowati

Universitas Negeri Jakarta

Author-ID : 3182586

Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Mathematics Public Health Social Sciences Other

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Analisis Soft Skills Peserta Didik pada Pembelajaran Redoks dengan Model Flipped Classroom-Collaborative Learning Maria Paristiowati; Yusmaniar Yusmaniar; Catur Ahda Darojatun
Jurnal Riset Pendidikan Kimia (JRPK) Vol 8 No 1 (2018): Jurnal Riset Pendidikan Kimia (JRPK), Volume 8 Nomor 1 (2018)
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/JRPK.081.06

Penelitian ini bertujuan untuk mengetahui soft skills peserta didik pada pembelajaan materi redoks dan tata nama senyawa kimia dengan model flipped classroom-collaborative learning. Penelitian dilakukan di salah satu SMA Negeri di Jakarta dengan 36 peserta didik kelas X sebagai subyek penelitian. Metode penelitian yang digunakan adalah metode penelitian kualitatif dengan menggunakan instrumen wawancara, lembar observasi, reflektif jurnal, catatan lapangan, kuesioner serta tes hasil belajar. Flipped classroom-collaborative learning adalah model pembelajaran dimana peserta didik mempelajari materi pelajaran di luar kelas melalui video pembelajaran, dan kegiatan belajar di dalam kelas dilakukan dengan pembelajaran kolaboratif yang menekankan pada aktivitas peserta didik dalam kelompok, meliputi kerja sama, sharing knowledge, mengkonstruksi pemahaman bersama, dan bertanggung jawab terhadap kelompok. Hasil penelitian menunjukkan soft skills peserta didik yang muncul meliputi keterampilan komunikasi, keterampilan kolaborasi dan literasi teknologi informasi dan komunikasi (TIK). Penerapan model flipped classroom-collaborative learning memberikan kemudahan bagi peserta didik untuk memahami materi pelajaran di dalam maupun di luar kelas, mereview materi pelajaran, membantu peserta didik yang pasif, dan dapat digunakan sebagai panduan dalam mengerjakan tugas serta mempersiapkan tes. Selain itu, model pembelajaran ini juga berdampak positif terhadap hasil belajar peserta didik. Kata kunci : Flipped classroom, Collaborative learning, Soft skills, Redoks

Analisis Literasi Digital (ICT) Peserta Didik Melalui Pemanfaatan Web Kahoot dalam Pembelajaran Koloid Jumila Jumila; Maria Paristiowati; Zulhipri Zulhipri; Edith Allanas
Jurnal Riset Pendidikan Kimia (JRPK) Vol 8 No 2 (2018): Jurnal Riset Pendidikan Kimia (JRPK), Volume 8 Nomor 2 (2018)
Publisher : LPPM Universitas Negeri Jakarta

This study aims to determine the digital literacy of students after learning process on colloidal topic using the Kahoot web. The study was conducted at SMA Negeri 22 Jakarta, Indonesia in 2017/2018 school year using qualitative research methods. Web Kahoot is used as an evaluation tool in the learning process on colloidal topic. Data collection techniques through observation, interviews, reflective journals, and dissemination of questionnaires for needs analysis and digital literacy. The dimensions of digital literacy analyzed in this study consist of information, communication, content-creation, safety and problem-solving. The results of this study show that students have a good category in the dimensions of information, communication, content-creation, and problem-solving, while the safety dimensions are categorized very well. Based on the results of the research, Kahoot web can foster studentsâ€™ digital literacy in the learning process of colloidal topic. Keywords: Digital Literacy, Web Kahoot, Colloid

THE EFFECT OF LEARNING MODEL CONCEPTUAL CHANGE BASED INSTRUCTION (CCBI) AND GENERATIVE LEARNING MODEL (GLM) AND CRITICAL THINKING SKILLS TO THE LEARNING OUTCOMES OF ACID-BASE Wiwik Setiawan; Suwirman Nuryadin; Maria Paristiowati
JURNAL LENTERA [PENDIDIKAN PUSAT PENELITIAN LPPM UM METRO] Vol 1, No 1 (2016): JUNE 2016
Publisher : Lembaga Penelitian UM Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/jlplppm.v1i1.89

The purpose of this study was to determine effect of learning model Conceptual Change Based Instruction (CCBI) and Generative Learning Model (GLM) and critical thinking skills to the learning outcomes of acid-base.The research was conducted in SMA Bakti Mulya 400 lesson year 2015-2016. In this study were randomly selected sample (cluster random sampling). Data of learning outcomes and critical thinking skills are collected in the form of multiple-choice written test type. Data were analyzed using descriptive statistics and two ways ANOVA. Based on research, it was found. First there is a difference in student learning outcomes significantly between models CCBI with GLM model (F = 4.288, p <0.05), the second there is a difference in student learning outcomes significantly in the group of students with high critical thinking skills among models CCBI with GLM model (F = 4.34, p<0.05), the third there was no difference in student learning outcomes significantly in the group of students who have the ability to think critically low between models CCBI with GLM model (F = 0.194, p<0.05), and the fourth there are significant interaction between the learning model with the ability to think critically (F = 5.122, p<0.05).

The Effect of Electrodeposition Current and Electrolyte Composition on Electrodeposition of Fe-Ni Alloys Ghina Imani Rofi; Maria Paristiowati
Chemistry and Materials Vol. 1 No. 2 (2022)
Publisher : Pusat Inovasi Sains

This research was conducted to determine the effect of solution variations, electrical current, thickness, weight, metal composition, and the characteristics of the Fe-Ni alloy synthesized using the electrodeposition method. The instruments used in this study were atomic absorption spectroscopy (AAS) to determine the metal composition in the deposit, X-ray diffraction to determine the diffraction patterns, and scanning electron microscopy (SEM) to observe morphology and energy dispersive X-ray spectroscopy for elemental analysis. The SEM micrographs obtained showed that morphology of the Fe-Ni alloy was in the form of refined grains. The percentage of Fe in the deposit decreases with the increase in the used current. The AAS data also showed that a high Ni composition in solution will affect the atomic percent of each metal in the deposit. The formation of the alloy was confirmed by diffraction peaks at 2θ of 44°, 53°, and 76° that associated with reflection planes of the face centered cubic structure of Fe-Ni with the crystallite size range from 5 nm to 35 nm.

SINTESIS DAN UJI ADSORPSI SILIKA TERMODIFIKASI 3-Aminopropiltrietoksisilan (APTS) PADA LOGAM Cu (II) DALAM LARUTAN Yusmaniar Yusmaniar; Maria Paristiowati; Nathasya Jofita
Jurnal Riset Sains dan Kimia Terapan Vol 4 No 2 (2014): JRSKT - Jurnal Riset Sains dan Kimia Terapan, Volume 4 Nomor 2 Desember 2014
Publisher : Program Studi Kimia Universitas Negeri Jakarta

Pada penelitian ini dibuat adsorben silika termodifikasi APTS yang disintesis menggunakan bahan dasar sekam padi. Abu sekam padi ini diolah sedemikian rupa menjadi larutan natrium silikat hingga menghasilkan produk silika gel. Silika gel kemudian dimodifikasi secara kimia dengan reagen 3-aminopropiltrietoksisilan (APTS) sehingga menghasilkan silika termodifikasi APTS. Hasil FTIR menunjukkan bahwa silika termodifikasi APTS mengandung serapan gugus fungsi amino (-NH2), silanol (Si-OH), siloksana (Si-O-Si), dan rantai alifatik (-CH2-). Kandungan dari silika termodifikasi APTS yang ditunjukkan melalui hasil analisis EDX juga menunjukkan bahwa produk memiliki persentase massa masing-masing atom 35.26% silika, 48.47% oksigen, dan 16.27% nitrogen. Hasil penelitian menunjukkan bahwa pH optimum yang diperlukan untuk adsorpsi ion Cu(II) dengan silika termodifikasi APTS adalah 4.0 dan konsentrasi optimum sebesar 100 mg/L. Adsorpsi ion Cu(II) oleh silika termodifikasi APTS mengikuti isoterma adsorpsi Langmuir dengan nilai qmaks sebesar 48.36 mg/g. Dengan demikian adsorpsi terjadi secara kimia dengan membentuk lapisan monolayer. APTS modified silica adsorbent which has been synthesized, using rice hull ash as a raw material. This rice hull ash was carried out to sodium silicate which will be produced to silica gel product. Silica gel was modified with 3-Aminopropyltriethoxysilane (3-APTS) so that produced APTS modified silica. FTIR data indicated APTS modified silica showed the presence of amine (-NH2), silanol (Si-OH), siloxane (Si-O-Si) groups, and aliphatic chains (-CH2-). Contents of APTS modified silica were determined by EDX which had 35.26% silica, 48.47% oxygen, and 16.27% nitrogen. Research results showed that a pH value is 4.0 which is favorable for copper adsorption and optimum concentration value is 100 mg/L Cu(II). Adsorption process of Copper(II) ion by APTS modified silica followed Langmuir isotherm with qmaks 48.36 mg/g. Therefore adsorption happened chemically with monolayer.Key words: APTS modified silica, sol-gel, rice hull ash, adsorption, copper.

Analysis of Students’ Critical Thinking Skills by Applying Flipped Classroom Learning Model using Powtoon Application on The Topic of Salt Hydrolysis Maria Paristiowati; Elsa Vera Nanda; Nur Azizah Putri Hasibuan; Miska Zidna Ilmana
JKPK (Jurnal Kimia dan Pendidikan Kimia) Vol 7, No 3 (2022): JKPK (Jurnal Kimia dan Pendidikan Kimia)
Publisher : Program Studi Pendidikan Kimia FKIP Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/jkpk.v7i3.67802

This study aims to determine students' critical thinking skills by applying flipped classrooms using the Powtoon application on the topic of salt hydrolysis. This study, which included 36 participants—15 men and 21 women—used a descriptive methodology and was carried out at one of Jakarta's public high schools. The instrument used was an observation sheet to observe the flipped classroom model’s learning process, critical thinking skills tests, reflective journals, and depth interviews. The flipped classroom method entails four steps: pre-class by studying independently and providing stimuli. In-class by fostering critical thinking; and post-class by evaluating. Combining asynchronous and synchronous activities was the process. Students learn independently during the pre-class stage by answering pre-learning questions and watching videos. During the class phase, Zoom meetings are used for synchronous learning to discuss salt hydrolysis applications in particular contexts. Discussion assignments on the salt hydrolysis case help students learn asynchronously after class. The study results showed that the flipped classroom using the Powtoon application can be an alternative for distance learning and can influence the students’ critical thinking at a very good level. It also helps them be more active and critical in learning, like exchanging opinions with others and doing assignments on the topic of salt hydrolysis.

Electrodeposition of PANI-NiO as Electrode for Deionization K+ and Cl- Auliya, Annisa; Deswara, Raka; Paristiowati, Maria; Budi, Setia
Chemistry and Materials Vol. 1 No. 1 (2022)
Publisher : Pusat Inovasi Sains

This study aims to synthesize thin film of polyaniline-nickel oxide (PANI-NiO) as an electrode in capacitive deionization (CDI) technology. Thin film PANI-NiO were synthesized by electrodeposition method with different applied potentials. The FTIR spectrum and XRD pattern confirmed that PANI-NiO has been successfully synthesized. Based on the SEM-EDX data, PANI-NiO has a tightly stacked granular morphology, which consist of Fe, Cr, S, Ni, O, and C elements. Based on experimental results, the highest capacitance come from PANI-NiO 1.25 V with a value of 475.24 F/g. PANI-NiO 1.25 V also has a small resistance, which is 13.55 Ω. Salt reduction efficiency test for PANI-NiO 1.25 V also shows the highest salt reduction efficiency compared to other electrodes. Owing to its high capacitance, low charge transfer resistance, and high salt reduction capacity, the PANI-NiO prepared at 1.25 V might be a potential material to be developed for the electrolyte deionization application.

The Effects of Aniline Concentration and Deposition Time on Polyaniline Conductance as Substrate in Fe/Ni Electrodeposition Sutrisno, Mega; Paristiowati, Maria; Nailah Fauziyyah
Chemistry and Materials Vol. 1 No. 1 (2022)
Publisher : Pusat Inovasi Sains

The research aims to determine the influence of aniline concentration and deposition time on the characteristics of polyaniline prepared using potentiostatic and galvanostatic electrodeposition methods. FTIR characterization data shows the typical peak of polyaniline in the form of the presence of a quinoid functional group at a wavenumber of 1596.16 cm-1. The typical diffraction pattern of polyaniline using XRD was detected at peaks of 2θ 21.1007o and 23.5995o. Polyaniline formed using SEM has a surface morphology that grows in a stacked and irregular manner and has a high conductance value so that it can be used as a substrate in Fe/Ni electrodeposition. The results of the Fe/Ni electrodeposition process when viewed using SEM cause the polyaniline surface morphology to be covered by a Fe/Ni alloy by having an elemental composition from the EDS test data, are iron (Fe) 68.15% and nickel (Ni) 24.83%. Fe/Ni levels from AAS data attached to PANI(pot)-Fe/Ni are 1.1912 ppm and 0.8288 ppm; in PANI(gal)-Fe/Ni are 1.2219 ppm and 0.8392 ppm.

Synthesis and Characterization of High Conductivity Polyaniline Prepared at Room Temperature Budi, Setia; Puspa Rini, Eka; Paristiowati, Maria; Imaduddin, Agung; Syafei, Devi
Chemistry and Materials Vol. 1 No. 1 (2022)
Publisher : Pusat Inovasi Sains

In this study, polyaniline was successfully synthesized using an oxidative polymerization method at room temperature. The polymerizations were carried out with and without stirring process under ultraviolet (UV) irradiation. The polyaniline was characterized by FTIR, XRD, SEM, SAA, and Four Point Probe. It is found that UV irradiation and stirring could increase the surface area and conductivity of polyaniline. The surface area obtained for stirred and unstirred polymerization were 37.9 m2/g and 29.0 m2/g, respectively. Moreover, conductivity values for stirred and unstirred polymerization were found as 1.22 S/cm and 1.08 S/cm respectively. This result shows that polyaniline synthesized by stirring treatment obtained uniform morphology, smaller size, greater crystallinity, higher BET surface area, and higher conductivity than that that of without stirring.

Optimizing University Admissions: A Machine Learning Perspective Maulana, Aga; Noviandy, Teuku Rizky; Sasmita, Novi Reandy; Paristiowati, Maria; Suhendra, Rivansyah; Yandri, Erkata; Satrio, Justinus; Idroes, Rinaldi
Journal of Educational Management and Learning Vol. 1 No. 1 (2023): August 2023
Publisher : Heca Sentra Analitika

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.60084/jeml.v1i1.46

The university admission process plays a pivotal role in shaping the future of aspiring students. However, traditional methods of admission decisions often fall short in capturing the holistic capabilities of individuals and may introduce bias. This study aims to improve the admission process by developing and evaluating machine learning approach to predict the likelihood of university admission. Using a dataset of previous applicants' information, advanced algorithms such as K-Nearest Neighbors, Random Forest, Support Vector Regression, and XGBoost are employed. These algorithms are applied, and their performance is compared to determine the best model to predict university admission. Among the models evaluated, the Random Forest algorithm emerged as the most reliable and effective in predicting admission outcomes. Through comprehensive analysis and evaluation, the Random Forest model demonstrated its superior performance, consistency, and dependability. The results show the importance of variables such as academic performance and provide insights into the accuracy and reliability of the model. This research has the potential to empower aspiring applicants and bring positive changes to the university admission process.

Co-Authors , Woro Sumarni - Afrizal Afrizal Afrizal Aftuni Aftuni Agung Imaduddin, Agung Ahmad Syakur Al Husna Alysa Hestaviana Amyyana, Afwu Hayyi Andini Lestari Syah Putri Annisa Nur Fitria Arinda Putri Nurhaliza Ariyatun, Ariyatun Aulia, Faizah Auliya, Annisa BUDI SETIADI DARYONO Catur Ahda Darojatun Cecep Kustandi Chaeruman, Uwes Anis Cyntia Melawati Darsef Darwis Deby Virgiawan Deswara, Raka Dewi Fitriyani Diska Ariani Silalahi Edith Allanas Emran, Talha Bin Erdawati Erdawati Erdawati Erdawati, Erdawati Erkata Yandri Fahmi Anhar Muladi Fajriah, Sari Nur Fitriani, Roisyah Ghazi Mauer Idroes Ghina Imani Rofi Hanhan Dianhar Hasibuan, Nur Azizah Putri Ilmiyati, Dian Irma Ratna K Irwanto Irwanto Isa, Illyas Md Istianah Istianah Jumila Jumila Karepesina, Mohammad Asrul Ashmi Karyadi, Prita Atria Kurniadewi, Fera Maulana, Aga Miska Zidna Ilmana Moersilah, Moersilah Muhamad Fazar Nurhadi MUHAMMAD ILHAM Mukhlisuddin Ilyas Muktiningsih Nurjayadi N, Muktiningsih Nailah Fauziyyah Nainggolan, Icha Ananda Nanda, Elsa Vera Nathasya Jofita Neli Nilawati Noviantika Nurul Nabillah Nur Azizah Putri Hasibuan Nurasiah Nurasiah Nurbaity Nurbaity Nurhaliza, Arinda Putri Prabowo, Norbertus Krisnu Prita Atria Karyadi Puspa Rini, Eka Puteri, Hana Alya Putri Hasibuan, Nur Azizah Putri, Andini Lestari Syah R.A Murti Kusuma Wirasti Rahma, Wanda Amelia Rahma, Wanda Amelia Rahmawati, Rahmawati Ratna Choiryana Rinaldi Idroes Risky, Elsyafahriza Sadam, Padya Adisty Putri Sasmita, Novi Reandy Satrio, Justinus Setia Budi Setia Budi Setiawan, Wiwik Setyorini, Triyana Wahyu SRI WARDANI Stephanie, Mian Maria Sudarmin Suhartono Suhartono Suhendra, Rivansyah Sulistyowati Nur Astuti Sutrisno, Mega Suwirman Nuryadin SUWIRMAN NURYADIN, SUWIRMAN Syafei, Devi Syifa Nur Muttaqin Teuku Rizky Noviandy Tri Retnosari Ucu Cahyana Umayah, Anisa Uwes Anies Chaeruman Virgiawan, Deby Widjonarko, Kelik Wiwik Setiawan Yuli Rahmawati Yusmaniar Yusmaniar Yusmaniar Yusmaniar Zahriah, Zahriah Zulhipri Zulhipri Zulhipri, Zulhipri Zulmanelis Zulmanelis

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