Maria Paristiowati - Academia.edu (original) (raw)

Papers by Maria Paristiowati

Research paper thumbnail of Development of TPACK of chemistry teacher on electrolyte and non-electrolyte topic through lesson study

Nucleation and Atmospheric Aerosols, 2021

This research aims to develop the Technological Pedagogical Content Knowledge (TPACK) of chemistr... more This research aims to develop the Technological Pedagogical Content Knowledge (TPACK) of chemistry teachers in teaching Electrolyte and Non-Electrolytes through Lesson Study. The research method used is a qualitative method with an interpretive paradigm. The sample in this study is the chemistry teachers at SMAN 1 Talaga and SMAN 1 Bantarujeg, Majalengka. The data collection instruments are TPACK questionnaires, observations, interviews, and reflective journals. Stages of research following the stages of the lesson study activities consist of 1) making lesson plans that are integrated with TPACK components, 2) implementing lesson plans in learning and observing the learning process, and 3) reflecting learning activities. The data analysis method used is the analysis method of Miles and Huberman. The results showed that the abilities of TPACK chemistry teachers before lesson study activities were at no perception level, where teachers could not implement learning technology. After doing the lesson study activities, TPACK teachers have developed from the perception level in the first cycle of lesson study to the conception level in the second cycle. So, it can be concluded that lesson study is one of the effective alternative methods to develop TPACK of chemistry teachers.

Research paper thumbnail of Development of students’ creative thinking skills in chemistry using Mobile Game-Based Learning (M-GBL) with integrated creative problem-solving

CRC Press eBooks, Jun 7, 2019

This study explored the development of creative thinking skills by using a Mobile Game-Based Lear... more This study explored the development of creative thinking skills by using a Mobile Game-Based Learning (M-GBL) media chemistry using the topic of ion equilibrium in salt solution. The M-GBL media used in this research has been validated regarding chemistry content by educational experts, while the pilot study has been validated by experts, students and teachers. The research was conducted in three chemistry classrooms of three secondary schools. Data were collected through participant observation using interviews, observation, a reflective journal and a questionnaire. The research quality standards included prolonged engagement, persistent observation, progressive subjectivity and member checking. The interview results show that the students developed their creative thinking skills in flexibility to find ideas in different ways, original ideas, fluency in generating ideas and elaborative thinking. The results concluded that in learning chemistry, especially in the topic of ion equilibrium in salt solution, M-GBL had a positive effect and can also develop students' creativity.

Research paper thumbnail of Development of Android-Based Mobile learning media on Atomic Structure and Periodic Table

IOP conference series, Dec 3, 2018

This study aims to develop an Android-Based Mobile Learning Media on Atomic Structure and Periodi... more This study aims to develop an Android-Based Mobile Learning Media on Atomic Structure and Periodic Table. The development of mobile learning media adapted the research and development stages by Borg & Gall which was reduced to three stages: needs assessment, media development, and media testing. Mobile learning media that has been developed is an Android-based application (.apk) named ATOMOB, with size less than 45 MB compatible on Android devices with variety of screen resolution sizes. It was reviewed by expert of chemistry, expert of multimedia, chemistry teachers, and students. The quality of this media was determined based on the aspect of subject matter, language, operating process, audio and visual display. The assessment data are collected from 10 experts, 5 chemistry teachers and 100 senior high school students by using Likert questionnaire. Overall interpretation of assessments by experts, students, and teachers resulted in very good criteria on each assessment indicator. This mobile learning media can motivate students to learn more about chemistry because students said this media is interesting, attractive, and make learning more meaningful. Therefore, mobile learning media that has been developed is feasible to be used as learning media and suitable with students' needs.

Research paper thumbnail of Oxidative polymerization of polyaniline and its microwave absorbing properties

AIP Conference Proceedings

Research paper thumbnail of Developing Preservice Chemistry Teachers’ Engagement with Sustainability Education through an Online Project-Based Learning Summer Course Program

Sustainability

The aim of this research was to develop the sustainability competencies of preservice chemistry t... more The aim of this research was to develop the sustainability competencies of preservice chemistry teachers’ through the use of a project-based learning model. Preservice chemistry teachers were engaged in a summer course program in collaboration with national and international universities. The summer course program was conducted online due to the COVID-19 pandemic. The research involved 26 preservice chemistry teachers from a pedagogical university in Jakarta, Indonesia, which joined with other university students from other universities in Indonesia, America, Thailand, and Malaysia. We used a qualitative methodology. Data were collected through interviews, questionnaires, observations, preservice chemistry teachers’ portfolios, and reflective journals. The data were coded into themes and interpreted to reveal that all students engaged successfully in developing their sustainability perspectives, environmental awareness, project development engagement, communication, and collaboratio...

Research paper thumbnail of Pelatihan model pembelajaran daring untuk meningkatkan kompetensi guru di Kabupaten Bekasi

ABSYARA: Jurnal Pengabdian Pada Masyarakat

There has been a COVID-19 pandemic outbreak since the end of 2019 requiring learning not to be ca... more There has been a COVID-19 pandemic outbreak since the end of 2019 requiring learning not to be carried out in school but as distance learning (PJJ). Technology plays an important role in PJJ such as learning through video, learning video, learning web applications, or video conference using any platforms. Teachers as facilitators must have skills in technology and create fun learning models that can facilitate the student in PJJ. So, it is necessary to carry out the activity to update the knowledge and skills of teachers so that they can adapt to pandemic conditions by conducting fun online learning model training for teachers. Therefore, they can create interesting online learning that can motivate and facilitate PJJ according to the 2013 Curriculum. As an area that is very close to Jakarta, Bekasi Regency is located just to the east of Jakarta, so it is appropriate that Universitas Negeri Jakarta as a higher education institution makes Bekasi Regency the target area for the traini...

Research paper thumbnail of The Effect of Electrodeposition Current and Electrolyte Composition on Electrodeposition of Fe-Ni Alloys

Chemistry and Materials

This research was conducted to determine the effect of solution variations, electrical current, t... more 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 cente...

Research paper thumbnail of The Application of Mobile Learning for University Students in the Pancasila Education Modul in Developing Character of Students' Empathy

Universal Journal of Educational Research, 2020

The main purpose of this study is to improve students' empathy attitudes in Pancasila education c... more The main purpose of this study is to improve students' empathy attitudes in Pancasila education courses using applications in mobile phones. It is a tool application or media that is used by educators to be able to transfer knowledge to their students. This is used to be able to increase the interaction and learning motivation of students, so they can obtain maximum learning resources. The name of the application is Pancasila Mobile learning, and it is available on Playstore for Android users and web-based page. Meanwhile, the empathy characters need to be developed by the school to be able to grow in students. As such, this study focuses on growing empathy by using mobile learning applications. The research method used is quantitative. The data collection technique used was an online questionnaire, which was filled by 119 students at universities in Jakarta. They are students who have already or are studying Pancasila in college. The results of this study indicate that the use of mobile learning applications in learning Pancasila in the classroom can increase empathy attitudes towards students. They can carry out positive activities, and feel pleasure and comfort when using mobile learning applications in the learning process. Thus, the use of mobile learning needs to be continuously developed by educators both in universities and schools.

Research paper thumbnail of The Effect of Flipped Classroom-Project Based Learning Model and Learning Independence toward Students' Achievement in Chemical Bonding

Proceedings of the 2017 International Conference on Education and E-Learning, 2017

This study aims to determine the effect of flipped classroom-project based learning model and lea... more This study aims to determine the effect of flipped classroom-project based learning model and learning independence toward student achievement on Chemical Bonding. The sample of this research is the tenth grade students of SMA Santa Ursula Jakarta taken by cluster random sampling. The research uses quasi experiment method with two ways analysis of variance (ANOVA). The result shows that the flipped classroom-project based learning model have positive effect on students who have high learning independence. There is interaction between learning model and learning independence toward students' achievement. Tukey test shows that students' achievement with high independence in the model of flipped classroom-project based learning is higher than they have taught by the conventional-project based learning model. While students' achievement with lower learning independence shows lower achievement on flipped classroom-project based learning than conventional-project based learning model. It can be concluded that the flipped classroom-project based learning model can be applied in learning chemistry to improve students' achievement when it is supported by high learning independence.

Research paper thumbnail of Fabrication of an Immobilized Polyelectrolite Complex (PEC) Membrane from Pectin-Chitosan and Chromoionophore ETH 5294 for pH-Based Fish Freshness Monitoring

Coatings, 2022

Considering the significance of its demand around the world, the accurate determination of fish f... more Considering the significance of its demand around the world, the accurate determination of fish freshness with a simple and rapid procedure has become an interesting issue for the fishing industry. Hence, we aimed to fabricate a new optical pH sensor based on a polyelectrolyte (PEC) membrane of pectin–chitosan and the active material chromoionophore ETH 5294. A trial-and-error investigation of the polymer compositions revealed that the optimum ratio of pectin to chitosan was 3:7. With an optimum wavelength region (λ) at 610 nm, the constructed sensor was capable of stable responses after 5 min exposure to phosphate-buffered solution. Furthermore, the obtained sensor achieved optimum sensitivity when the PBS concentration was 0.1 M, while the relative standard deviation values ranged from 2.07 to 2.34%, suggesting good reproducibility. Further investigation revealed that the sensor experienced decreased absorbance of 16.67–18.68% after 25 days of storage. Employing the optimum condit...

Research paper thumbnail of RGB-ColorMeter on smartphones as a simple spectrophotometer: An alternative method of teaching spectrophotometry at the vocational high school of chemical analysts

Journal of Physics: Conference Series, 2021

This study aims to improve students’ understanding at the Vocational High School of Chemical Anal... more This study aims to improve students’ understanding at the Vocational High School of Chemical Analysts on spectrophotometric concepts through experiments using smart phone technology. For this research, The ColorMeter application with matching red green blue (RGB) colors is used as a simple spectrophotometry. The use of smartphone as a simple spectrophotometry in practicum can maximize spectrophotometric learning activities in the classroom since these are often constrained by the limited access to the instrument. Through finding an alternative method, learning objectives can be properly achieved and practical application is easily attained. This RGB – ColorMeter application can be used to read the transmittance of a colored solution by utilizing the complementary colors of the solution being tested. Transmittance data obtained is used to find the absorbance of the solution, so that it can determine the concentration of a substance in the solution. The results showed that the applica...

Research paper thumbnail of The Effect of Google Classroom as A Tool in Chemistry Learning

Proceedings of the International Joint Conference on Science and Engineering (IJCSE 2020), 2020

The development of information and communication technology in the 21st century has had an impact... more The development of information and communication technology in the 21st century has had an impact in the field of education. One of them is the development in the learning model that uses a lot of information and communication technology-based media. One of the technologies in learning that is currently widely used is Google Classroom. Google classroom is an open-source application from Google that can be used for learning and can be referred to as e-learning. This study was aimed to understand the effect of using Google Classroom in chemistry learning on student learning outcomes. Google Classroom in this study was used as a medium that contains learning videos and LKPD that could be accessed by students. This research was conducted in one of the State High Schools in Jakarta with a sample of 72 students in class X. The research method used was quasi experiment with posttest only control group design. The sampling technique in this study was purposive random sampling. The instrument in this study was in the form of a test of learning outcomes in the form of descriptions and questionnaires for students' online learning readiness. The results showed that the average student learning outcomes of the experimental class were 83.972, while the control class was 78.528. These results differed significantly at α= 0.05. So it could be concluded that Chemistry Learning with the help of Google Classroom media had a positive influence on student learning outcomes.

Research paper thumbnail of Development of TPACK of chemistry teacher on electrolyte and non-electrolyte topic through lesson study

THE 2ND SCIENCE AND MATHEMATICS INTERNATIONAL CONFERENCE (SMIC 2020): Transforming Research and Education of Science and Mathematics in the Digital Age, 2021

This research aims to develop the Technological Pedagogical Content Knowledge (TPACK) of chemistr... more This research aims to develop the Technological Pedagogical Content Knowledge (TPACK) of chemistry teachers in teaching Electrolyte and Non-Electrolytes through Lesson Study. The research method used is a qualitative method with an interpretive paradigm. The sample in this study is the chemistry teachers at SMAN 1 Talaga and SMAN 1 Bantarujeg, Majalengka. The data collection instruments are TPACK questionnaires, observations, interviews, and reflective journals. Stages of research following the stages of the lesson study activities consist of 1) making lesson plans that are integrated with TPACK components, 2) implementing lesson plans in learning and observing the learning process, and 3) reflecting learning activities. The data analysis method used is the analysis method of Miles and Huberman. The results showed that the abilities of TPACK chemistry teachers before lesson study activities were at no perception level, where teachers could not implement learning technology. After doing the lesson study activities, TPACK teachers have developed from the perception level in the first cycle of lesson study to the conception level in the second cycle. So, it can be concluded that lesson study is one of the effective alternative methods to develop TPACK of chemistry teachers.

Research paper thumbnail of Soap and its function: Introduction of a simple concept of chemistry to primary students

THE 2ND SCIENCE AND MATHEMATICS INTERNATIONAL CONFERENCE (SMIC 2020): Transforming Research and Education of Science and Mathematics in the Digital Age, 2021

This study aims to introduce chemistry to the 3rd-grade of primary students to develop the studen... more This study aims to introduce chemistry to the 3rd-grade of primary students to develop the students' critical thinking skills through science learning. A learning style habituation certainly needs to be started at an early stage to promote scientific thinking, which affects them in making individual choices daily. This study applied a guided inquiry learning model using soap to create concrete learning to understand abstract concepts better. The learning model consisted of seven hands-on activities to lead students to learn chemistry concepts such as density, polarity, emulsifying agent, and emulsion phenomenon. The study used qualitative research methods and employed interviews, observations, and reflective journals during the hands-on activities process. The findings showed that primary students were observed to have a high curiosity towards the uses of soap in everyday life and demonstrated the ability to analyze a phenomenon based on the science concepts introduced to them. This study concluded that the introduction of chemical concepts could also be given to students since elementary school. Early education is a good idea to prepare the students to grow into people who can think scientifically.

Research paper thumbnail of Online project-based learning on surface tension during Covid-19 pandemic

THE 2ND SCIENCE AND MATHEMATICS INTERNATIONAL CONFERENCE (SMIC 2020): Transforming Research and Education of Science and Mathematics in the Digital Age, 2021

The Covid-19 outbreak in Indonesia and other countries requires students to study at home and eng... more The Covid-19 outbreak in Indonesia and other countries requires students to study at home and engage in online learning. In this research, the online Project-Based Learning (PBL) model is applied, which facilitates students to learn in online learning and enables them to solve real-world problems in their way. This study used a descriptive qualitative method, which involved 36 students in 10 th-grade Vocational School. The data was collected through online observation, product assessment, interviews, and process. The project that the students did was developing experimental devices to measure surface tension in soap or detergent solutions. The stages of online PBL learning in this study: 1) planned and determined the idea of making simple surface tension measurement tools, 2) designed tools, 3) reported the progress of making tools through Google Classroom, and the teacher provided feedback, 4) implemented tools through self-designed experiments students, 5) recorded video of tools making and its implementation, 6) sent video footage through Google Classroom, 7) students presented projects by making the video, and 8) teacher gave an assessment and evaluation of the resulting project. There was no face-to-face interaction of doing project assignments but through online discussion. The results showed that students could make simple surface tension measurement tools and design experiments using these tools. Students could actively participate in learning activities and got learning results above the minimum criteria value. In conclusion, online PBL can be an alternative learning model in situations that require students to be at home.

Research paper thumbnail of Engaging university students in multidisciplinary, project-based learning through the Southeast Asia mobility (SAM) program

THE 2ND SCIENCE AND MATHEMATICS INTERNATIONAL CONFERENCE (SMIC 2020): Transforming Research and Education of Science and Mathematics in the Digital Age, 2021

Improving students chemical literacy and cultural awareness through ethnopedagogy in chemistry ed... more Improving students chemical literacy and cultural awareness through ethnopedagogy in chemistry education

Research paper thumbnail of Sustainability Development-Based Agroindustry in Chemistry Learning to Improve the Preservice Chemistry Teachers’ Competence

Tadris: Jurnal Keguruan dan Ilmu Tarbiyah, 2021

This research aims to integrate agroindustry and sustainability development into chemistry learni... more This research aims to integrate agroindustry and sustainability development into chemistry learning through the Project-Based Learning model (PjBL) to improve the competence of preservice chemistry teachers. This research employed the qualitative method. The Summer Course program was held collaboratively by Universitas Negeri Jakarta, Institut Pertanian Bogor, and Villanova University. The program was implemented online within six weeks due to the COVID-19 pandemic. The participants consisted of 25 students. The data had been collected through interviews, questionnaires, observations, student portfolios, and reflection journals. Based on the analysis, several projects developed by preservice chemistry teachers increased the application to solve sustainability problems in the agroindustry field. Furthermore, the project was expected to be developed into a natural product that can increase the agroindustry value for coffee farmers. The findings also foster the preservice chemistry tea...

Research paper thumbnail of Kirkpatrick’s Model for Evaluation of Financial Management Training

Proceedings of the 5th International Conference on Food, Agriculture and Natural Resources (FANRes 2019), 2020

This study aims to identify and describe the Regional Financial Management Training Program which... more This study aims to identify and describe the Regional Financial Management Training Program which in principle leads to improvement. The method used in this evaluation study is a quantitative descriptive method with a qualitative study. The research design used in this study was Kirkpatrick's model. This design was chosen because the Kirkpatrick model can evaluate training programs to determine whether the program can be continued, improved or stopped. Evaluation of the implementation of this training was conducted at the Human Resources Development Agency (BPSDM) of North Maluku Province, the number of respondents used was 40 people who were training participants. Based on the evaluation of the evaluation component aspects, it can be concluded that the evaluation of this training can be continued with improvements to improve the quality of training in the future. This research can be used as a recommendation for Public Administration Institutions (LAN) and BPSDM throughout Indonesia in order to increase ASN capacity for financial management.

Research paper thumbnail of Video Kimia Online Berbasis Pembelajaran Kontekstual Sebagai Alternatif Media Pada Materi Asam Basa DI Sma

This study aims to produce video of contextual learning as an alternative media on the acid-base ... more This study aims to produce video of contextual learning as an alternative media on the acid-base in grade 11. The study was conducted using method of Research and Development (R&D) of Borg and Gall. Stages of the study are: (1) research and information collecting, (2) planning, (3) develop primary form of product, (4) preliminary field testing, (5) main product revision, (6) main field testing, (7) operational product revision, (8) operational field testing, (9) final product revision. The results of product testing at the final stage by subject matter experts and media experts give score from 75% -100%. This criterion are good and very good. While the results of trial by users (students and teachers) give score from 81.3% -88.9%, which means very good. The result of this study was concluded that video online can used as a media of learning contextual-based chemistry.

Research paper thumbnail of Classification of Gayo Arabica coffee ethanol extract using FTIR-PCA

IOP Conference Series: Earth and Environmental Science, 2021

The classification of the bean and powder ethanol extracts of Gayo Arabica coffee has been carrie... more The classification of the bean and powder ethanol extracts of Gayo Arabica coffee has been carried out using Fourier Transform Infrared (FTIR) and Principal Component Analysis (PCA). Coffee samples were obtained from 3 locations in Bener Meriah Regency, namely Pegasing, Celala, Jagong, and 3 locations in Aceh Tengah regency, namely Permata and Bandar and Wihpesam. Each extract was analyzed by FTIR at wavenumbers in the range of 4000 - 400 cm-1. The obtained FTIR spectra were identified by PCA. The results showed that only the PCA plot of coffee powder extract showed a grouping pattern based on the sample location, namely Bener Meriah and Aceh Tengah. This showed that the ethanol extract of coffee powder could be used as a reference in the classification of coffee samples using FTIR-PCA.

Research paper thumbnail of Development of TPACK of chemistry teacher on electrolyte and non-electrolyte topic through lesson study

Nucleation and Atmospheric Aerosols, 2021

This research aims to develop the Technological Pedagogical Content Knowledge (TPACK) of chemistr... more This research aims to develop the Technological Pedagogical Content Knowledge (TPACK) of chemistry teachers in teaching Electrolyte and Non-Electrolytes through Lesson Study. The research method used is a qualitative method with an interpretive paradigm. The sample in this study is the chemistry teachers at SMAN 1 Talaga and SMAN 1 Bantarujeg, Majalengka. The data collection instruments are TPACK questionnaires, observations, interviews, and reflective journals. Stages of research following the stages of the lesson study activities consist of 1) making lesson plans that are integrated with TPACK components, 2) implementing lesson plans in learning and observing the learning process, and 3) reflecting learning activities. The data analysis method used is the analysis method of Miles and Huberman. The results showed that the abilities of TPACK chemistry teachers before lesson study activities were at no perception level, where teachers could not implement learning technology. After doing the lesson study activities, TPACK teachers have developed from the perception level in the first cycle of lesson study to the conception level in the second cycle. So, it can be concluded that lesson study is one of the effective alternative methods to develop TPACK of chemistry teachers.

Research paper thumbnail of Development of students’ creative thinking skills in chemistry using Mobile Game-Based Learning (M-GBL) with integrated creative problem-solving

CRC Press eBooks, Jun 7, 2019

This study explored the development of creative thinking skills by using a Mobile Game-Based Lear... more This study explored the development of creative thinking skills by using a Mobile Game-Based Learning (M-GBL) media chemistry using the topic of ion equilibrium in salt solution. The M-GBL media used in this research has been validated regarding chemistry content by educational experts, while the pilot study has been validated by experts, students and teachers. The research was conducted in three chemistry classrooms of three secondary schools. Data were collected through participant observation using interviews, observation, a reflective journal and a questionnaire. The research quality standards included prolonged engagement, persistent observation, progressive subjectivity and member checking. The interview results show that the students developed their creative thinking skills in flexibility to find ideas in different ways, original ideas, fluency in generating ideas and elaborative thinking. The results concluded that in learning chemistry, especially in the topic of ion equilibrium in salt solution, M-GBL had a positive effect and can also develop students' creativity.

Research paper thumbnail of Development of Android-Based Mobile learning media on Atomic Structure and Periodic Table

IOP conference series, Dec 3, 2018

This study aims to develop an Android-Based Mobile Learning Media on Atomic Structure and Periodi... more This study aims to develop an Android-Based Mobile Learning Media on Atomic Structure and Periodic Table. The development of mobile learning media adapted the research and development stages by Borg & Gall which was reduced to three stages: needs assessment, media development, and media testing. Mobile learning media that has been developed is an Android-based application (.apk) named ATOMOB, with size less than 45 MB compatible on Android devices with variety of screen resolution sizes. It was reviewed by expert of chemistry, expert of multimedia, chemistry teachers, and students. The quality of this media was determined based on the aspect of subject matter, language, operating process, audio and visual display. The assessment data are collected from 10 experts, 5 chemistry teachers and 100 senior high school students by using Likert questionnaire. Overall interpretation of assessments by experts, students, and teachers resulted in very good criteria on each assessment indicator. This mobile learning media can motivate students to learn more about chemistry because students said this media is interesting, attractive, and make learning more meaningful. Therefore, mobile learning media that has been developed is feasible to be used as learning media and suitable with students' needs.

Research paper thumbnail of Oxidative polymerization of polyaniline and its microwave absorbing properties

AIP Conference Proceedings

Research paper thumbnail of Developing Preservice Chemistry Teachers’ Engagement with Sustainability Education through an Online Project-Based Learning Summer Course Program

Sustainability

The aim of this research was to develop the sustainability competencies of preservice chemistry t... more The aim of this research was to develop the sustainability competencies of preservice chemistry teachers’ through the use of a project-based learning model. Preservice chemistry teachers were engaged in a summer course program in collaboration with national and international universities. The summer course program was conducted online due to the COVID-19 pandemic. The research involved 26 preservice chemistry teachers from a pedagogical university in Jakarta, Indonesia, which joined with other university students from other universities in Indonesia, America, Thailand, and Malaysia. We used a qualitative methodology. Data were collected through interviews, questionnaires, observations, preservice chemistry teachers’ portfolios, and reflective journals. The data were coded into themes and interpreted to reveal that all students engaged successfully in developing their sustainability perspectives, environmental awareness, project development engagement, communication, and collaboratio...

Research paper thumbnail of Pelatihan model pembelajaran daring untuk meningkatkan kompetensi guru di Kabupaten Bekasi

ABSYARA: Jurnal Pengabdian Pada Masyarakat

There has been a COVID-19 pandemic outbreak since the end of 2019 requiring learning not to be ca... more There has been a COVID-19 pandemic outbreak since the end of 2019 requiring learning not to be carried out in school but as distance learning (PJJ). Technology plays an important role in PJJ such as learning through video, learning video, learning web applications, or video conference using any platforms. Teachers as facilitators must have skills in technology and create fun learning models that can facilitate the student in PJJ. So, it is necessary to carry out the activity to update the knowledge and skills of teachers so that they can adapt to pandemic conditions by conducting fun online learning model training for teachers. Therefore, they can create interesting online learning that can motivate and facilitate PJJ according to the 2013 Curriculum. As an area that is very close to Jakarta, Bekasi Regency is located just to the east of Jakarta, so it is appropriate that Universitas Negeri Jakarta as a higher education institution makes Bekasi Regency the target area for the traini...

Research paper thumbnail of The Effect of Electrodeposition Current and Electrolyte Composition on Electrodeposition of Fe-Ni Alloys

Chemistry and Materials

This research was conducted to determine the effect of solution variations, electrical current, t... more 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 cente...

Research paper thumbnail of The Application of Mobile Learning for University Students in the Pancasila Education Modul in Developing Character of Students' Empathy

Universal Journal of Educational Research, 2020

The main purpose of this study is to improve students' empathy attitudes in Pancasila education c... more The main purpose of this study is to improve students' empathy attitudes in Pancasila education courses using applications in mobile phones. It is a tool application or media that is used by educators to be able to transfer knowledge to their students. This is used to be able to increase the interaction and learning motivation of students, so they can obtain maximum learning resources. The name of the application is Pancasila Mobile learning, and it is available on Playstore for Android users and web-based page. Meanwhile, the empathy characters need to be developed by the school to be able to grow in students. As such, this study focuses on growing empathy by using mobile learning applications. The research method used is quantitative. The data collection technique used was an online questionnaire, which was filled by 119 students at universities in Jakarta. They are students who have already or are studying Pancasila in college. The results of this study indicate that the use of mobile learning applications in learning Pancasila in the classroom can increase empathy attitudes towards students. They can carry out positive activities, and feel pleasure and comfort when using mobile learning applications in the learning process. Thus, the use of mobile learning needs to be continuously developed by educators both in universities and schools.

Research paper thumbnail of The Effect of Flipped Classroom-Project Based Learning Model and Learning Independence toward Students' Achievement in Chemical Bonding

Proceedings of the 2017 International Conference on Education and E-Learning, 2017

This study aims to determine the effect of flipped classroom-project based learning model and lea... more This study aims to determine the effect of flipped classroom-project based learning model and learning independence toward student achievement on Chemical Bonding. The sample of this research is the tenth grade students of SMA Santa Ursula Jakarta taken by cluster random sampling. The research uses quasi experiment method with two ways analysis of variance (ANOVA). The result shows that the flipped classroom-project based learning model have positive effect on students who have high learning independence. There is interaction between learning model and learning independence toward students' achievement. Tukey test shows that students' achievement with high independence in the model of flipped classroom-project based learning is higher than they have taught by the conventional-project based learning model. While students' achievement with lower learning independence shows lower achievement on flipped classroom-project based learning than conventional-project based learning model. It can be concluded that the flipped classroom-project based learning model can be applied in learning chemistry to improve students' achievement when it is supported by high learning independence.

Research paper thumbnail of Fabrication of an Immobilized Polyelectrolite Complex (PEC) Membrane from Pectin-Chitosan and Chromoionophore ETH 5294 for pH-Based Fish Freshness Monitoring

Coatings, 2022

Considering the significance of its demand around the world, the accurate determination of fish f... more Considering the significance of its demand around the world, the accurate determination of fish freshness with a simple and rapid procedure has become an interesting issue for the fishing industry. Hence, we aimed to fabricate a new optical pH sensor based on a polyelectrolyte (PEC) membrane of pectin–chitosan and the active material chromoionophore ETH 5294. A trial-and-error investigation of the polymer compositions revealed that the optimum ratio of pectin to chitosan was 3:7. With an optimum wavelength region (λ) at 610 nm, the constructed sensor was capable of stable responses after 5 min exposure to phosphate-buffered solution. Furthermore, the obtained sensor achieved optimum sensitivity when the PBS concentration was 0.1 M, while the relative standard deviation values ranged from 2.07 to 2.34%, suggesting good reproducibility. Further investigation revealed that the sensor experienced decreased absorbance of 16.67–18.68% after 25 days of storage. Employing the optimum condit...

Research paper thumbnail of RGB-ColorMeter on smartphones as a simple spectrophotometer: An alternative method of teaching spectrophotometry at the vocational high school of chemical analysts

Journal of Physics: Conference Series, 2021

This study aims to improve students’ understanding at the Vocational High School of Chemical Anal... more This study aims to improve students’ understanding at the Vocational High School of Chemical Analysts on spectrophotometric concepts through experiments using smart phone technology. For this research, The ColorMeter application with matching red green blue (RGB) colors is used as a simple spectrophotometry. The use of smartphone as a simple spectrophotometry in practicum can maximize spectrophotometric learning activities in the classroom since these are often constrained by the limited access to the instrument. Through finding an alternative method, learning objectives can be properly achieved and practical application is easily attained. This RGB – ColorMeter application can be used to read the transmittance of a colored solution by utilizing the complementary colors of the solution being tested. Transmittance data obtained is used to find the absorbance of the solution, so that it can determine the concentration of a substance in the solution. The results showed that the applica...

Research paper thumbnail of The Effect of Google Classroom as A Tool in Chemistry Learning

Proceedings of the International Joint Conference on Science and Engineering (IJCSE 2020), 2020

The development of information and communication technology in the 21st century has had an impact... more The development of information and communication technology in the 21st century has had an impact in the field of education. One of them is the development in the learning model that uses a lot of information and communication technology-based media. One of the technologies in learning that is currently widely used is Google Classroom. Google classroom is an open-source application from Google that can be used for learning and can be referred to as e-learning. This study was aimed to understand the effect of using Google Classroom in chemistry learning on student learning outcomes. Google Classroom in this study was used as a medium that contains learning videos and LKPD that could be accessed by students. This research was conducted in one of the State High Schools in Jakarta with a sample of 72 students in class X. The research method used was quasi experiment with posttest only control group design. The sampling technique in this study was purposive random sampling. The instrument in this study was in the form of a test of learning outcomes in the form of descriptions and questionnaires for students' online learning readiness. The results showed that the average student learning outcomes of the experimental class were 83.972, while the control class was 78.528. These results differed significantly at α= 0.05. So it could be concluded that Chemistry Learning with the help of Google Classroom media had a positive influence on student learning outcomes.

Research paper thumbnail of Development of TPACK of chemistry teacher on electrolyte and non-electrolyte topic through lesson study

THE 2ND SCIENCE AND MATHEMATICS INTERNATIONAL CONFERENCE (SMIC 2020): Transforming Research and Education of Science and Mathematics in the Digital Age, 2021

This research aims to develop the Technological Pedagogical Content Knowledge (TPACK) of chemistr... more This research aims to develop the Technological Pedagogical Content Knowledge (TPACK) of chemistry teachers in teaching Electrolyte and Non-Electrolytes through Lesson Study. The research method used is a qualitative method with an interpretive paradigm. The sample in this study is the chemistry teachers at SMAN 1 Talaga and SMAN 1 Bantarujeg, Majalengka. The data collection instruments are TPACK questionnaires, observations, interviews, and reflective journals. Stages of research following the stages of the lesson study activities consist of 1) making lesson plans that are integrated with TPACK components, 2) implementing lesson plans in learning and observing the learning process, and 3) reflecting learning activities. The data analysis method used is the analysis method of Miles and Huberman. The results showed that the abilities of TPACK chemistry teachers before lesson study activities were at no perception level, where teachers could not implement learning technology. After doing the lesson study activities, TPACK teachers have developed from the perception level in the first cycle of lesson study to the conception level in the second cycle. So, it can be concluded that lesson study is one of the effective alternative methods to develop TPACK of chemistry teachers.

Research paper thumbnail of Soap and its function: Introduction of a simple concept of chemistry to primary students

THE 2ND SCIENCE AND MATHEMATICS INTERNATIONAL CONFERENCE (SMIC 2020): Transforming Research and Education of Science and Mathematics in the Digital Age, 2021

This study aims to introduce chemistry to the 3rd-grade of primary students to develop the studen... more This study aims to introduce chemistry to the 3rd-grade of primary students to develop the students' critical thinking skills through science learning. A learning style habituation certainly needs to be started at an early stage to promote scientific thinking, which affects them in making individual choices daily. This study applied a guided inquiry learning model using soap to create concrete learning to understand abstract concepts better. The learning model consisted of seven hands-on activities to lead students to learn chemistry concepts such as density, polarity, emulsifying agent, and emulsion phenomenon. The study used qualitative research methods and employed interviews, observations, and reflective journals during the hands-on activities process. The findings showed that primary students were observed to have a high curiosity towards the uses of soap in everyday life and demonstrated the ability to analyze a phenomenon based on the science concepts introduced to them. This study concluded that the introduction of chemical concepts could also be given to students since elementary school. Early education is a good idea to prepare the students to grow into people who can think scientifically.

Research paper thumbnail of Online project-based learning on surface tension during Covid-19 pandemic

THE 2ND SCIENCE AND MATHEMATICS INTERNATIONAL CONFERENCE (SMIC 2020): Transforming Research and Education of Science and Mathematics in the Digital Age, 2021

The Covid-19 outbreak in Indonesia and other countries requires students to study at home and eng... more The Covid-19 outbreak in Indonesia and other countries requires students to study at home and engage in online learning. In this research, the online Project-Based Learning (PBL) model is applied, which facilitates students to learn in online learning and enables them to solve real-world problems in their way. This study used a descriptive qualitative method, which involved 36 students in 10 th-grade Vocational School. The data was collected through online observation, product assessment, interviews, and process. The project that the students did was developing experimental devices to measure surface tension in soap or detergent solutions. The stages of online PBL learning in this study: 1) planned and determined the idea of making simple surface tension measurement tools, 2) designed tools, 3) reported the progress of making tools through Google Classroom, and the teacher provided feedback, 4) implemented tools through self-designed experiments students, 5) recorded video of tools making and its implementation, 6) sent video footage through Google Classroom, 7) students presented projects by making the video, and 8) teacher gave an assessment and evaluation of the resulting project. There was no face-to-face interaction of doing project assignments but through online discussion. The results showed that students could make simple surface tension measurement tools and design experiments using these tools. Students could actively participate in learning activities and got learning results above the minimum criteria value. In conclusion, online PBL can be an alternative learning model in situations that require students to be at home.

Research paper thumbnail of Engaging university students in multidisciplinary, project-based learning through the Southeast Asia mobility (SAM) program

THE 2ND SCIENCE AND MATHEMATICS INTERNATIONAL CONFERENCE (SMIC 2020): Transforming Research and Education of Science and Mathematics in the Digital Age, 2021

Improving students chemical literacy and cultural awareness through ethnopedagogy in chemistry ed... more Improving students chemical literacy and cultural awareness through ethnopedagogy in chemistry education

Research paper thumbnail of Sustainability Development-Based Agroindustry in Chemistry Learning to Improve the Preservice Chemistry Teachers’ Competence

Tadris: Jurnal Keguruan dan Ilmu Tarbiyah, 2021

This research aims to integrate agroindustry and sustainability development into chemistry learni... more This research aims to integrate agroindustry and sustainability development into chemistry learning through the Project-Based Learning model (PjBL) to improve the competence of preservice chemistry teachers. This research employed the qualitative method. The Summer Course program was held collaboratively by Universitas Negeri Jakarta, Institut Pertanian Bogor, and Villanova University. The program was implemented online within six weeks due to the COVID-19 pandemic. The participants consisted of 25 students. The data had been collected through interviews, questionnaires, observations, student portfolios, and reflection journals. Based on the analysis, several projects developed by preservice chemistry teachers increased the application to solve sustainability problems in the agroindustry field. Furthermore, the project was expected to be developed into a natural product that can increase the agroindustry value for coffee farmers. The findings also foster the preservice chemistry tea...

Research paper thumbnail of Kirkpatrick’s Model for Evaluation of Financial Management Training

Proceedings of the 5th International Conference on Food, Agriculture and Natural Resources (FANRes 2019), 2020

This study aims to identify and describe the Regional Financial Management Training Program which... more This study aims to identify and describe the Regional Financial Management Training Program which in principle leads to improvement. The method used in this evaluation study is a quantitative descriptive method with a qualitative study. The research design used in this study was Kirkpatrick's model. This design was chosen because the Kirkpatrick model can evaluate training programs to determine whether the program can be continued, improved or stopped. Evaluation of the implementation of this training was conducted at the Human Resources Development Agency (BPSDM) of North Maluku Province, the number of respondents used was 40 people who were training participants. Based on the evaluation of the evaluation component aspects, it can be concluded that the evaluation of this training can be continued with improvements to improve the quality of training in the future. This research can be used as a recommendation for Public Administration Institutions (LAN) and BPSDM throughout Indonesia in order to increase ASN capacity for financial management.

Research paper thumbnail of Video Kimia Online Berbasis Pembelajaran Kontekstual Sebagai Alternatif Media Pada Materi Asam Basa DI Sma

This study aims to produce video of contextual learning as an alternative media on the acid-base ... more This study aims to produce video of contextual learning as an alternative media on the acid-base in grade 11. The study was conducted using method of Research and Development (R&D) of Borg and Gall. Stages of the study are: (1) research and information collecting, (2) planning, (3) develop primary form of product, (4) preliminary field testing, (5) main product revision, (6) main field testing, (7) operational product revision, (8) operational field testing, (9) final product revision. The results of product testing at the final stage by subject matter experts and media experts give score from 75% -100%. This criterion are good and very good. While the results of trial by users (students and teachers) give score from 81.3% -88.9%, which means very good. The result of this study was concluded that video online can used as a media of learning contextual-based chemistry.

Research paper thumbnail of Classification of Gayo Arabica coffee ethanol extract using FTIR-PCA

IOP Conference Series: Earth and Environmental Science, 2021

The classification of the bean and powder ethanol extracts of Gayo Arabica coffee has been carrie... more The classification of the bean and powder ethanol extracts of Gayo Arabica coffee has been carried out using Fourier Transform Infrared (FTIR) and Principal Component Analysis (PCA). Coffee samples were obtained from 3 locations in Bener Meriah Regency, namely Pegasing, Celala, Jagong, and 3 locations in Aceh Tengah regency, namely Permata and Bandar and Wihpesam. Each extract was analyzed by FTIR at wavenumbers in the range of 4000 - 400 cm-1. The obtained FTIR spectra were identified by PCA. The results showed that only the PCA plot of coffee powder extract showed a grouping pattern based on the sample location, namely Bener Meriah and Aceh Tengah. This showed that the ethanol extract of coffee powder could be used as a reference in the classification of coffee samples using FTIR-PCA.