Environmental Pollution Material Research Articles

Comparison of the Creative Thinking Abilities of Class XI High School Students on Environmental Pollution Material Given Gender Differences

Creative thinking skills are skills that develop an idea or ideas based on existing problems or solve problems from various points of view. The results of the 2015 GCI survey show that the creative thinking ability of Indonesian people is still low, ranking 86th in the creative class 93 countries. This research aims to determine the creative thinking abilities of high school students regarding environmental pollution material in terms of gender differences. This type of research is descriptive research with a quantitative approach. The research subjects were class XI students of SMA Negeri 4 Sidrap for the 2023–2024 academic year, with a sample of 30 students. The sample was determined by random sampling. Data collection techniques use tests. The data analysis technique uses descriptive statistical processing. The results of the research show that the percentage score of students' creative thinking ability on the indicators of fluency is 65.52%, originality is 71.97%, flexibility is 69.97%, and elaboration is 73.64%.

Profil Tingkat Kemampuan Berpikir Kritis Siswa pada Materi Pencemaran Lingkungan Kelas VII SMPN 3 Lirik Tahun Ajar 2023/2024

Critical thinking skills are very necessary in life because in the 21st century critical thinking skills are really needed for students, because the 21st century is the era of information and technology. This research aims to determine the level of students' critical thinking abilities in science lessons and how often teachers give questions aimed at making students accustomed to and able to manage their thoughts to be more critical. This research uses research instruments in the form of 12 multiple choice critical thinking questions and 10 essays. In this study there were 6 multiple choice indicators and 5 essay indicators. This research method is quantitative research with a survey approach. Surveys are generally a way of collecting data from a number of units or individuals over a large and broad period of time. Based on the results of data processing and analysis regarding the ability to think critically of class VII students at SMPN 3 Lirik for the 2023/2024 academic year, they are categorized as less critical. Based on the results of research conducted by researchers in class VII at SMPN 3 Lirik, the percentage based on material about environmental pollution is multiple choice 53.7 % in the less critical category and the critical thinking ability essay is 6.09% in the less critical category. Based on the results of data processing and analysis of research data that have been described, it can be concluded that the profile of the level of critical thinking abilities of science students in environmental pollution material for class VII SMPN 3 Lirik for the 2023/2024 academic year is in the less critical category.

IMPLEMENTASI PENDEKATAN STEAM BERBASIS MODEL PjBL MELALUI PEMBELAJARAN ONLINE DALAM MENINGKATKAN KETERAMPILAN BERPIKIR KRITIS DAN KREATIVITAS SISWA PADA MATERI PENCEMARAN LINGKUNGAN DI KELAS X SMA NEGERI 1 DUKUPUNTANG

The aim of study is to improve students’ creativity and critical thinking skills after implementing STEAM approach based on project based learning with online. The research method used a quasi-experimental design with a pretest-posttest control group. The sample used with purposively was 20 students, which were divided into experimental and control groups. Data was taken by using critical thinking skills test, questionnaires, observation, and documentation. The data analysis technique used descriptive analysis and the average difference test.The conclusions of the study was: (1) There is a significant average difference in critical thinking skills between the experimental class and the control class after implementing the STEAM approach with the class that does not use the STEAM approach on Environmental Pollution Material in Class X SMA Negeri 1 Dukupuntang as evidenced by the value probability (p) 0.015 0.05. (2) Student creativity in the experimental class on fluency indicators reaches 82.5%, flexibility indicators 90%, originality indicators 90% and elaboration indicators 86.88%, with an overall average score of 86.88% which is included in the very good category.

PENGARUH MODEL PEMBELAJARAN PROJECT BASED LEARNING (PjBL) TERHADAP KEMAMPUAN BERPIKIR KREATIF SISWA KELAS X MA MU’ALLIMAT NWDI PANCOR

This study aims to determine the effect of the Project Based Learning (PjBL) learning model on students' creative thinking skills on environmental pollution material. This type of research uses Quasi Experimental Design. The population of this study were all grade X students at MA Mu'allimat NWDI Pancor. The sample of this study was determined by Simple Random Sampling technique. Class X B as an experimental class using the Project Based Learning (PjBL) model and class X A as a control class using the lecture method. The research design used is Posttest-Only Control design which has been modified on the posttest value which is not obtained from student test scores after learning, but student creative thinking after learning. Data collection techniques used documentation, LKPD, and flower vase creativity assessment sheets. Data were analyzed using independent t-test analysis. The hypothesis results show that tcount> ttable, namely (2.795> 1.161) which means H0 is rejected and Ha is accepted, so it can be concluded that there is an effect of the Project Based Learning (PjBL) learning model on the Creative Thinking Ability of Class X MA Mu'allimat NWDI Pancor Students.

Application Creative Problem Solving to Improve Junior High School Students' Creative Thinking Skills in Environmental Pollution Materials

Education is an effort to improve the quality of life and human resources. One of these educational goals is to increase student creativity in learning at school. The purpose of this study was to determine the increase in students' creative thinking skills, learning implementation, and the responses of class VII E students of SMP Negeri 2 Semen after implementing the learning process by applying the creative problem solving learning model to environmental pollution material. The research method used is Pre-Experimental Design with the experimental design used is One-Group-Pretest-Posttest. The research subjects in this study were students of class VII E with a total of 34 students at SMP Negeri 2 Semen Kediri. Data collection using tests (pretest-posttest), observation sheets of learning implementation, and student response questionnaires. Based on the results of the study after carrying out learning by applying creative problem solving it was found that students' creative thinking skills increased with an N-Gain value of 0.75 with very high criteria. The application of the creative problem solving learning model in class VII E of SMP Negeri 2 Semen was carried out well, this can be seen from the mode value of the results of observing the implementation of learning, namely 4. Student responses to the application of creative problem solving learning models in environmental pollution material received a value of 85, 10% with very high criteria which means students give a positive response. The conclusion from this study is that the creative problem solving learning model influences the creative thinking skills of class VII E students of SMP Negeri 2 Semen Kediri.

Structural and sound absorption properties of polyethylene terephthalate (PET) and recycled polyethylene terephthalate (r-PET) nanofibers

Sound-absorbing materials are used to reduce noise pollution since noise is one of the important environmental factors affecting human health. Due to their high porosity and large specific surface area, nanofibers can be preferred as a better sound absorption material. In this study, nanofiber-based sound-absorbing materials are produced using polyethylene terephthalate (PET) and recycled polyethylene terephthalate (r-PET) in the electrospinning method in order to obtain a thin and high-sound absorbing material. Another objective of this study is to investigate the performance of r-PET compared to PET from the sound absorbing properties points of view to contribute sustainability which is one of the most important issues of today. For these purposes, solutions of three different concentrations (10%, 15% and 20% owf) were prepared by dissolving PET and r-PET polymers in trifluoroacetic acid (TFA):dichloromethane (DCM) solvent mixture. It will also be possible to help sustainability issues by reducing environmental pollution and raw material costs by using r-PET. Samples were electrospun on a polypropylene based nonwoven structure using solutions at different flow rates (0.1-0.3-0.5 ml/h) and needle tip-collector distances (4–8 cm). The fiber diameter, thickness, bulk density, porosity and pore size properties of the produced samples were investigated. The sound absorption coefficient (SAC) was measured with a dual microphone impedance tube device. The relationship between the structural properties of the samples and the SAC was evaluated. SAC decreased with increasing fiber diameter, bulk density, pore size and increased with high porosity. These values were compared with different sound absorbing materials which are commonly used. According to the results, the developed nanofiber-based material with a 0.3 mm thickness has high SAC values compared to conventional sound absorbing materials with 10–16 mm thickness values, especially in middle frequency levels. Recycled polymer may be preferred when PET and r-PET nanofibers show similar results.

Development of a Flipbook-Based Digital Pocketbook on Environmental Pollution Material on the Critical and Creative Thinking Skills of Class VII Students at SMPN 1 Sojol Utara

This study aims to develop and see the effectiveness of flipbook-based digital pocketbooks on environmental pollution material on the critical and creative thinking skills of grade VII students at SMPN 1 Sojol Utara. The method used in this research is research and development (Research and Development) with 4D instructional design. This research was conducted on grade VII students at SMPN 1 Sojol Utara totaling 40 students. The results of this study showed that: (1) The flipbook-based digital pocket book developed obtained a percentage of 86.96% of the very valid category and for media practicality obtained a percentage of 80% of the practical category for use in science learning, critical thinking skills obtained a value of 70.83% in the critical thinking category (2) The ability to think creatively obtained a score of 84.37% with the category of creative thinking (3) The effectiveness of the book The flipbook-based digital pocket developed is very effective in improving students' critical thinking skills with an effect size value of 1.95 very large categories, (4) The effectiveness of the flipbook-based digital pocketbook developed is very effective in improving students' creative thinking skills with an effect size valueThe 1.95 categories are huge. Based on the results of the development that has been carried out, flipbook-based digital pocketbooks can be a learning medium that can improve students' critical and creative thinking skills in science learning.

DEVELOPMENT OF SCIENCE LEARNING DEVICES ORIENTED ESD ON ENVIRONMENTAL POLLUTION MATERIALS TO IMPROVE STUDENTS' CRITICAL THINKING SKILLS AND ENVIRONMENTAL LITERACY

This research aims to develop Education for Sustainable Development (ESD)-oriented science learning tools on environmental pollution material to improve critical thinking skills and environmental literacy for junior high school students. This research is development research (R&D) using a 4D model which includes the define, design, develop and disseminate stages. The tools developed consist of Teaching Modules, Student Worksheets, learning media, and evaluation instruments. Expert validation results show the device is feasible with an average score of 4.2/5. In a limited trial at SMP Negeri 2 Bojong Tegal, the implementation of the Teaching Module was 89%, 81% of students were actively involved, 87% gave positive responses. There was an increase in students' critical thinking skills (average 80.2) and environmental literacy (average 84.5). Success was supported by the application of the ESD approach with project learning, case studies, group discussions, and contextual-interactive media. Implementation of the Independent Curriculum with Teaching Modules and ATP increases student learning independence. The constraints of limited time and inadequate facilities were overcome by efficient time management and teacher creativity. Overall, the tools are valid, practical, effective, in accordance with the Independent Curriculum and 21st century learning with high-level thinking skills, environmental literacy and learning technology.

Application of Learning Cycle 7e on Environmental Pollution Material Toward Students' Interest and Learning Outcomes in Class X

This study aims to describe the learning interest and cognitive learning outcomes of students with the Learning Cycle 7E learning model on environmental pollution material. This research uses a quantitative approach with the type of Pre-Experimental Design and One Group Pretest-Posttest design. The research sample was all students of class X SMA Negeri 1 Antang Kalang. The research instruments included learning interest questionnaire, cognitive learning outcomes test, and learning applicability observation sheet. Questionnaires and tests were given before and after the implementation of the Learning Cycle 7E model, while observations were made during the learning process. Data analysis shows that interest in learning based on the calculation of N-gain testing using excel shows there is an increase but still low. While the cognitive learning outcomes between pretest and postest experienced changes but classically said to be incomplete. This model also shows a high level of applicability, indicating its suitability for the context of biology learning at the high school level.

PENERAPAN MODEL CONTEXTUAL TEACHING AND LERANING (CTL) PADA MATERI PENCEMARAN LINGKUNGAN UNTUK MENINGKATKAN HASIL BELAJAR SISWA SMP NEGERI 6 SATAP LIKUPANG BARAT

This research aims to improve student learning outcomes at SMP Negeri 6 SATAP West Likupang by using the application of the contextual teaching and learning (CTL) model on environmental pollution material. The subjects of this research were 16 students in class VII of SMP Negeri 6 SATAP West Likupang, consisting of 6 male students and 10 female students. This type of research is classroom action research which consists of four stages, namely: planning, implementation, observation and reflection. Data was collected using observation methods, documentation studies, and tests in each cycle. The research results obtained showed that there was an increase in the completeness value of learning outcomes, namely from the pre-cycle of 31.25% to the first cycle of 85.71%. In cycle I, the teacher teaching observation stage obtained 86.69% (good) and student activity observation 82.69% (good) and these results had reached the success indicator (KKM 75%) so that the classroom action research was stopped, until cycle I. From The research results prove that lessons through the Contextual Teaching and Learning model on environmental pollution material can improve student learning outcomes.

Development of Canva Application-Based Motion Audio-Visual Media For The Creative Thinking Skills of Grade X Students at SMAN 1 Parigi Utara

Canva application-based motion audio-visual media is one form of learning media that can support 21st century learning. This study aims to develop and see the effectiveness of canva application-based motion audio-visual media on environmental pollution material on the ability to think creatively and science communication of grade X students at SMAN 1 North Parigi. The method used in this research is research and development (Research and Development) with 4D instructional design. This research was conducted on grade X students at SMAN 1 North Parigi totaling 48 students. The results of this study show that: (1) Canva application-based motion audio-visual media developed obtained a percentage of 86% of the very valid category and for practicality of media obtained a percentage of 87.5% of the very practical category for use in biology learning, (2) The effectiveness of motion audio-visual media based on the Canva application developed is very effective in improving students' creative thinking skills with effect size values 1.37 very large categories Based on the results of the development that has been carried out, Canva application-based motion audio-visual media can be a learning medium that can improve students' creative thinking skills in biology learning.

The students creative thinking on environmental pollution material using video-assisted problem based learning model

The ability to think creatively has an important role in 21st century learning. This study aims to determine the effect of applying the video-assisted Problem Based Learning (PBL) model on the creative thinking skills of class VII students of SMP Negeri 1 Sekampung Udik on environmental pollution material. The research sample was selected by purposive sampling technique. The design of this study used a quasi-experimental design with a non-equivalent control group design. The type of data taken is quantitative data and qualitative data. Quantitative data in the form of mean values of pretest, posttest, and N-gain ability to think creatively tested using the Independent Sample t-Test with a significance level of 5% obtained Sig. (2-tailed) 0.00 <0.05. Qualitative data in the form of a questionnaire on student responses to the use of the video-assisted PBL model. The results showed that the N-gain value for the experimental class was 0.57 in the "medium" category and the control class was 0.29 in the "low" category. These results indicate that there is a significant effect of using the video-assisted PBL model on students' creative thinking abilities in environmental pollution material. Student responses showed a positive response with an average score of 71.2% in the "good" category. Therefore, it can be concluded that the application of the video-assisted PBL model has an effect on the creative thinking abilities of students.Abstrak. Kemampuan berpikir kreatif memiliki peranan penting pada pembelajaran abad 21. Penelitian ini bertujuan untuk mengetahui pengaruh penerapan model Pembelajaran Berbasis Masalah (PBL) berbantu video terhadap kemampuan berpikir kreatif siswa kelas VII SMP Negeri 1 Sekampung Udik pada materi pencemaran lingkungan. Sampel penelitian dipilih dengan teknik purposive sampling. Metode penelitian ini menggunakan quasi eksperiment dengan bentuk desain penelitian non-equivalent control group design. Data kuantitatif berupa rerata nilai pretest, posttest, dan N-gain kemampuan berpikir kreatif yang diuji menggunakan uji Independent Sample t-Test dengan taraf signifikansi 5% didapatkan nilai Sig. (2-tailed) 0,00 < 0,05. Data kualitatif berupa tanggapan peserta didik pada penggunaan model PBL berbantu video. Hasil penelitian menunjukan bahwa nilai N-gain kelas eksperimen mencapai 0,57 dengan kategori “sedang” dan kelas kontrol mencapai 0,29 dengan kategori “rendah”. Hasil tersebut memperoleh terdapat pengaruh yang signifikan penggunaan model PBL berbantu video terhadap kemampuan berpikir kreatif siswa pada materi pencemaran lingkungan. Respon peserta didik terhadap pembelajaran menunjukan respon yang positif dengan rata-rata nilai 71,2% dengan kategori “baik”. Dengan demikian, disimpulkan bahwa penerapan model PBL berbantu video berpengaruh terhadap kemampuan berpikir kreatif siswa.

The Development of Assessment Instrument Based on Wordwall to Measure Process Science Skills for Environmental Pollution

This study aims to determine the validity, practicality, and effectiveness of an assessment instruments based on Wordwall in measuring students' science process skills of junior high school science learning in environmental pollution materials. This research is a type of development research (Research and Development) that refers to the procedure of the Borg and Gall development model which has stages including research and information collecting, planning, develop the preliminary form of the product, product design validation, main product revisions, main field testing, operational product revision, operational field testing, final product revision. The subject of the study was a grade VII student of SMPN 2 Ajung, Jember. This study used instruments in the form of validation sheets, practicality sheets, student questionnaire sheets, and science process skills tests. Data analysis techniques used in research consist of validity test analysis, practicality test analysis, and effectiveness test analysis. The results showed that out of 20 multiple-choice questions developed from aspects of material, construction, and language based on the assessment of 3 validators were declared very valid and worthy of use without revision. The twenty multiple-choice questions tested have valid question item validity. The assessment instrument has a reliability value of 0.612. The difficulty level analysis obtained 5 easy criteria questions, 14 medium criteria questions, and 1 difficult criteria question. The effectiveness of the assessment instrument obtained the average results of students' science process skills of 55%, including the sufficient category and student response questionnaires of 81%, so they were declared very good.

Creative thinking: The Effect of Green School-Based Project Based Learning (PjBL) Model

This study aims to determine the effect of the application of the Green School-based Project Based Learning (PjBL) learning model on students’ creative thinking abilities in waste management at schools using environmental pollution material at SMA Negeri 9 Bandar Lampung. This study uses the Quasy Experiment method. Data collection techniques in this study were in the form of tests, observations, and documentation. The results obtained in this study are that the Green School-based Project Based Learning (PjBL) learning model influences the creative thinking abilities of students at SMA Negeri 9 Bandar Lampung with environmental pollution material. This is indicated by the Sig value obtained in the hypothesis test which is 0.00 or ≤ 0.05.

The Effect of Guided Inquiry Learning Model on Student’s Scientific Communication Skills in SMPN 1 Gempol

One of the important skills to develop is scientific communication skills, communication is very important in everyday life. This research aims to determine the effect of the guided inquiry learning model on the scientific communication skills of class VII students at SMPN 1 Gempol, Pasuruan Regency. This research is a quasi-experiment conducted with a posttest-only design. The research sample was class VII D students as the experimental class and class VII C students as the control class with each class having 32 students. In this study, environmental pollution material was used in the experimental class, which was treated using the guided inquiry learning model, while the control class used the learning model commonly used by teachers at the school. The results of the research show that there are significant differences in value and influence in the guided inquiry learning model on written and oral scientific communication skills. Highlights: Guided Inquiry Impact: Examines effect on scientific communication skills. Quasi-Experiment Framework: Utilizes posttest-only design for structured assessment. Written and Oral Proficiency: Highlights impact on both communication modes. Keywords: Guided Inquiry, Written Communication Skills, Oral Communication Skills

The Effect of Implementing ESD in the PBL Model on Critical Thinking Ability in Environmental Pollution Material

Education for Sustainable Development (ESD) is an effort to realise the goals listed in the SDGs. ESD is an alternative approach to the field of education to prepare a generation that has an awareness of sustainable life. The purpose of this study is to analyze the effect of the application of the problem-based learning model on students' critical thinking skills on SDGs-oriented environmental pollution materials. The research method employed was a quasi-experimental with the control group pretest-posttest design. In determining the sample, the researchers employed purposive sampling techniques by considering the differences in academic achievement, differences between the two classes, and differences in the number of students. Therefore, class VII B with 27 students was chosen as the experimental class and class VII E with 25 students was chosen as the control class. The types of data used were quantitative. The pretest-posttest in the experimental class obtained an N-gain score of 0.58 in the medium criterion. The normality test in the experimental class obtained a score of Sig 0.48, which was lower than 0.05. Conversely, the control class obtained a score of Sig 0.20, which was lower than 0.05. The homogeneity result was Sig 0.12, which was lower than 0.05. The hypothesis testing using the independent-sample t-test, a Sig (2-tailed) value of 0.00 was obtained, and the results of the effect size test were 1.77 with the high criterion. Therefore, there was a significant effect of using the SDG-oriented PBL model towards critical thinking skills on the topic of environmental pollution.

Improving Creative Thinking Skills through Integration of Problem-Based Learning with STEAM In Environmental Pollution Material

The 21st century demands today's students to face increasingly complex life problems and a globally rigorous work environment. A learning model that can facilitate learners in developing their creative thinking skills is necessary. The objective of this research is to determine the influence of PBL-STEAM integration on learners' creative thinking abilities in the topic of environmental pollution. This type of research is quantitative with quasi-experimental research methods. The research sample consisted of 58 learners, with each class consisting of 29 learners selected through simple random sampling. Based on hypothesis testing using independent t-test at α = 0.05, the research findings showed a significance value of 0.00, this suggests that the PBL-STEAM learning model has an effect on learners' creative thinking in the topic of environmental pollution. The influence of the PBL-STEAM model on learners' creative thinking abilities can be analyzed based on the syntax of learning within the PBL-STEAM model. The results of this research imply that the PBL-STEAM learning model can be employed as a substitute for a model that enhances students' creative thinking abilities in the topic of environmental pollution

Boosting decarboxylation of monomethyl adipate coupling to dimethyl sebacate through Pt electrode at high current density

Dimethyl sebacate is an essential organic chemical, yet its conventional high-temperature pyrolytic synthesis process is marked by complexity, energy intensity, environmental pollution, and volatile raw material supplies. Presently, electrochemical synthesis emerges as a promising, environmentally sustainable method for one-step dimethyl sebacate synthesis via anodic decarboxylation coupling with monomethyl adipate. However, the existing process falls short in achieving the desired selectivity and current efficiency, particularly when operating at high current densities, thus impeding its broader industrial adoption. This study, synergizing density functional theory computations with experimental methods, conducts a comprehensive multidimensional analysis of the electrochemical performance at high current densities across four distinct electrode types: Pt plate, RuO2/Ti, PbO2, and graphite electrodes. It underscores the strong electron-orbital hybridization between adsorbed monomethyl adipate and the platinum electrode, resulting in an enhanced propensity for electron transfer at the electrode interface and facilitating the decarboxylation of monomethyl adipate coupling into dimethyl sebacate. Subsequently, through single-factor experiments and response surface methodology, an exhaustive analysis of the various factors influencing the electrolysis process is conducted, including supporting electrolyte, current density, H2O content, neutralization, and monomethyl adipate concentration. The optimal electrolysis operation configuration offers a robust theoretical foundation and technical framework for the large-scale implementation of green, energy-efficient electrochemical synthesis technology for dimethyl sebacate in industrial settings.

STEM-PBL integrative electronic module: Is that effective in improving students’ critical thinking skills?

The aim of this research is to develop an electronic module that integrates STEM and PBL projects to improve students' critical thinking skills. Development research conducted using the ADDIE model. The research was conducted at Muhammadiyah 2 Junior High School (JHS) of Batu. Product trials were carried out involving 25 class VII students. The data collection instrument was carried out using a questionnaire given to media experts, material experts, teachers and students to test the feasibility and practicality of the media, as well as the pretest-posttest to measure students' critical thinking skills. The results of the study show four things: 1) the E-Module learning media is in the very feasible category with a weighting percentage of eligibility, namely 77.5% by media experts and 98% by material experts. 2) E-Module learning media is included in the very practical category by science teachers with a percentage of 97%, and the practical category by students with a percentage of 79%. 3) The results of the implementation show that students are very enthusiastic in participating in learning activities using the E-Module, seen from the percentage of aspects of interest in the media which reaches 86%. 4) E-Module learning media has a significant effect so that it has the potential to improve students' critical thinking skills (Sig = 0.000). Thus, the E-Module with the STEM approach based on the PBL Model can be used in learning environmental pollution material by students.

Development of Problem-Based Learning LKPD Based Local Potential of Baros Mangroves in Biology Subjects Environmental Pollution Material

This research aims to Producing learning media the PBL modeled LKPD based on the local potential of Mangrove Baros on environmental pollution material is suitable, practical and effective in enhancing the problem-solving abilities and environmental care attitudes of students in class X at SMAN 1 Kretek, Bantul, Yogyakarta. This research follows a research and development approach using the Four-D (4D) model, which consists of four stages: Define, Design, Develop, and Disseminate. Field trials of the LKPD PBL based on the local mangrove potential in Baros for environmental pollution materials were conducted through quasi-experimental research with a pretest-posttest control group design. The subjects of the field trial were 60 students from two classes. Data collection involved problem-solving ability test questions and questionnaires on environmental care attitudes. Data analysis was performed using the MANOVA test to analyze differences in students' problem-solving abilities and environmental care attitudes. The results of the MANOVA test indicated differences in the use of PBL modeled LKPD based on the local mangrove potential in Baros for environmental pollution materials concerning problem-solving abilities and environmental care attitudes.