PENDIPA Journal of Science Education

The development of animation videos based on inquiry learning with the theme 'My Environment' to train the creative thinking skills of grade VII students

Ida Khofifah, Lukman Nulhakim, Vica Dian Aprelia Resti — Wed, 30 Jul 2025 00:00:00 +0000

The uniformity of student responses, which tends to indicate convergent thinking or mere knowledge reproduction, warrants attention as it reveals the students' cognitive process.Therefore, learning media that can stimulate students' creative thinking processes more optimally are needed. This study aimed to obtain data and describe the efficiency level of inquiry learning-based animated videos with the theme "My Environment" to train creative thinking skills of 7th-grade students. The method used is Research and Development (R&D) with the Borg and Gall model, modified into 7 steps: problem analysis, data collection, product design, product validation, product revision, product trial, and revision of trial results. The research subjects are material experts, media experts, practitioners, and students. The data types used are expert validation sheets to test validity by material experts, media experts, and practitioners, as well as student response questionnaires to determine the product's efficiency level. The results show that based on material expert validation, the percentage is 88.6% with the category "Very Valid", media expert validation obtains a percentage of 92.4% with the category "Very Valid", and practitioner validation (science teachers) obtains a percentage of 90.3% with the category "Very Valid". The efficiency level of the animated video product obtains a percentage of 86.9% with the category "Very Efficient".

Pengaruh Model Pembelajaran Problem Based Learning Berbantuan Media Video Terhadap Kemampuan Bepikir Kritis Siswa Pada Materi Bakteri

Rifky, Sri Purwati, Herliani, Sonja V.T Lumowa — Mon, 28 Jul 2025 00:00:00 +0000

This research aims to determine the effect of the Problem Based Learning (PBL) learning model assisted by video media on the critical thinking abilities on the material Bacteria. The ability to think critically is an important competency for the 21st century that needs to be developed in the biology learning process, especially in abstract and complex material such as bacteria. The research method used was quasi-experimental with a pretest-posttest control group design. The research sample consisted of two classes selected purposively, namely the experimental class which received the PBL model treatment assisted by video media, and the control class which used the conventional learning model. The instrument used is a critical thinking test which was developed based on critical thinking indicators according to Ennis. The data analysis technique used is the Independent Sample t-Test with a significance level of 5%. Based on the results of data analysis, it was found that the t test on students' critical thinking skills showed a significance value (0.000 < 0.005). Thus, it can be concluded that there is a significant influence from the use of the Problem Based Learning learning model assisted by video media on students' critical thinking skills in the Bacteria material.

Analysis of Construction Operations for The Development of High Speed Railway Jakarta-Bandung (Project Team Section 3 using The Cement Fly- Ash Gravel Pile Methode)

Ananda Agneshia Putri, Yuda Andika Pratama , Emanuella Ginting, Nisrina Abrar — Sun, 27 Jul 2025 00:00:00 +0000

Construction operation modeling is carried out to understand the behavior of the construction operating system better. Further, construction operation modeling can provide an overview of productivity and duration of completion, as well as make it easier to solve problems from the perspective of the whole model. In this paper, we conduct a CYCLONE modeling simulation in construction operations on the PT Kereta Cepat Indonesia China (KCIC) Project to build the Jakarta-Bandung High Speed Railway (Jakarta- Bandung / KCJB Fast Train using CFG Pile Construction operations. The CFG Pile construction in section 3 is carried out for 21,000 points and has repeated construction work so that it can perform a cyclone method simulation using productivity analysis with the help of MATLAB software (Simulink-Simevent). This simulation is executed for 30 cycles until the productivity results from the simulation have reached steady state conditions. Productivity result from both softwares produce almost the same results, respectively 0.675 from the COST program and 0.7427 from the MATLAB program. Based on the results of the sensitivity analysis, it can be concluded that the addition of resources such as number of drilling rigs, concrete pumps, and mixes truck will increase project productivity.

Kajian Literatur Mobile Learning Berbasis Augmented Reality Sebagai Upaya Melatih Model Mental Siswa Dalam Pembelajaran Sains

Thu, 24 Jul 2025 00:00:00 +0000

Technology is currently developing rapidly in the education era. An Example of technology that used as learning media through a smartphone is Augmented Reality. The purpose of doing this literature review was to determine the effect of using Augmented Reality in training students' mental models of science learning. This research used narrative literature review method, by analyzing several sources of literature related with the relationship between Augmented Reality and mental models in science learning. The result of the review shows that Augmented Reality can be applied in learning science, namely chemistry, physics and biology and can train learners' mental models by combining three levels of learners by combining three levels of representation, namely macroscopic, symbolic, and submicroscopic especially in chemistry.

Pengaruh Penggunaan Model Blended Learning Tipe Station Rotation Terhadap Berpikir Kritis Peserta Didik Pada Materi Struktur Bumi dan Perkembangannya

Ananda Uswatun Ummah, Lukman Nulhakim, Trian Pamungkas Alamsyah — Thu, 24 Jul 2025 00:00:00 +0000

This study aimed to examine the use of a mixed learning model of station rotation on the critical thinking skills of junior high school students with the science material of Earth Structure and Its Development. This study uses a quantitative method, a quasi-experimental design with a non-equivalent control group design. Two classes were used, one experimental class and one control class, each of which used a different learning model. The sampling technique used was non-probability sampling or non-random sampling, with the type of sampling being purposive sampling. The results showed that the discovery learning model had a greater influence on students' critical thinking skills compared to the mixed learning model of station rotation. After conducting research and data analysis, a result was obtained that there was no effect of the use of a mixed learning model of station rotation on students' critical thinking skills on the material of Earth Structure and Its Development. These result were obtained from a non-parametrik test (Mann Whitney test), namely the Assymp.2 sig(2 tailed) value of 0,151 > 0,05 which can be said to reject the research hypothesis.

Pengembangan E-Modul IPA Berbasis Question Prompt Scaffolding Tema Tekanan Hara Pada Si Hijau Untuk Menumbuhkan Kemampuan Argumentasi Siswa Kelas VIII

DINI NURGHAISANI FAHRANA, LISKA BERLIAN, R. AHMAD ZAKY EL ISLAMI — Wed, 23 Jul 2025 00:00:00 +0000

The ability to argue well is one of the important requirements in science learning. However, learning that aims to develop students' argumentation skills has not been implemented properly. One solution is to provide learning materials that contain indicators of argumentation skills. These indicators will be presented in the form of an E-Module based on Question Prompt Scaffolding. The purpose of this research and development was to test the validity and readability of the E-Module. This E-Module focuses on the theme of Nutrient Pressure on Green Plants with the aim of improving the argumentation skills of eighth-grade students. The research method used is Research and Development (R&D). The Research and Development (R&D) model is based on the ADDIE model (Analyze, Design, Development, Implementation, Evaluation). Various instruments were used in this study, including a validation questionnaire evaluated by three experts. These experts included subject matter experts, media experts, and science teachers. Additionally, a readability questionnaire was used to measure the readability of the E-Module. The validation results showed that the E-Module achieved an average score of 86% and fell into the “Highly Valid” category. This assessment was based on the subject matter expert's score of 82%, the media expert's score of 91%, and the science teacher's score of 86%. The readability of the E-Module was determined based on students' responses and achieved a score of 94%, categorized as “Very Good.” This proves that the Science E-Module based on Question Prompt Scaffolding with the theme of Nutrient Pressure on Green Plants is considered valid by all validators.

Analisis Penggunaan Media Pembelajaran Digital dalam Meningkatkan Pemahaman Konsep Siswa pada Pembelajaran Kimia

Tue, 22 Jul 2025 00:00:00 +0000

This study aimed to analyze the effect of using digital chemistry learning media on students' concept understanding in chemistry learning. The method used is a literature review with a qualitative descriptive approach. Data were obtained from five scientific articles published between 2019 and 2025, focusing on the use of digital media such as learning videos, interactive multimedia, augmented reality, and online evaluation platforms. The results of the study show that the use of digital media can improve students' concept understanding of chemical materials, especially on abstract concepts. Learning videos and interactive multimedia help visualize concepts, increase learning motivation, and support information retention. The use of augmented reality also provides a more interactive and contextual learning experience, and supports the improvement of students' digital literacy. The conclusion of this study states that digital learning media has great potential in creating more meaningful and in-depth chemistry learning, but it needs to be balanced with infrastructure readiness and teacher competency development in integrating technology effectively.

Pengaruh Penggunaan Media Pembelajaran Berbasis Aplikasi Fisika Gerak Lurus Terhadap Pemahaman Konsep Fisika SMA

Tue, 22 Jul 2025 00:00:00 +0000

The low conceptual understanding of straight motion among high school students, often caused by conventional and less interactive teaching methods, served as the foundation of this study. This research to examine the influence of using a straight motion physics learning application on students’ conceptual comprehension. A quantitative approach was employed through a quasi-experimental method using the Nonequivalent Control Group Design. The experimental group engaged with an interactive Android-based application, while the control group received instruction through traditional methods. The study addresses the gap in the lack of empirically tested game-based educational media in high school physics learning. Analysis revealed a statistically significant difference in posttest results (p = 0.039), with the experimental group scoring higher on average than the control group. The findings suggest that interactive application-based media exerts a positive influence on students’ learning motivation, which in turn enhances their conceptual understanding, particularly in the study of straight motion.

Development of Diagnostic Test Instruments as Placement Tests to Determine Students’ Cognitive Learning Levels on Acid-Base Material

Fida Saifatun Nur Hafidzah Z, Rinaningsih — Fri, 18 Jul 2025 00:00:00 +0000

This study aims to determine the validity and discriminatory power of diagnostic test instruments as placement tests on acid-base material and to determine the level of students' cognitive learning. This study was conducted in June - May of the 2024/2025 Academic Year. This diagnostic test instrument development research refers to the Research & Development (R&D) development method. Data collection in this study used tests, interviews, and questionnaires. The research stage begins with potential problems, data collection, product design stage, development of diagnostic test instruments and validation by experts, validity tests, difficulty level tests, and discriminatory power tests on small-scale tests and interpretation of students' cognitive levels on large-scale trials. The results of the assessment by expert validators showed that the criteria for the developed instrument were valid. The results of the analysis of the validity of the test items obtained 25 valid question items. The results of the test of the level of difficulty of the questions obtained 11 easy criteria questions and 14 medium criteria questions. The results of the discriminatory power test obtained 25 question items with very good discriminatory power. The results of the large-scale trial showed that the average interpretation of the results of the diagnostic test instrument was 78.81%. The percentage of students who passed the test was 70.3% while the percentage of students who failed was 30%. This shows that the diagnostic test instrument is effective in that it can improve students' understanding of acid-base chemistry material.

The Influence of the TPS (Think Pair Share) Learning Model on the Environmental Literacy Skills of Class X Students

Wafi Sayyidaturrofi'ah, Ruqoyyah Nasution, Masitah Masitah, Sri Purwati — Thu, 17 Jul 2025 00:00:00 +0000

This study aimed to determine the effect of the Think Pair Share (TPS) learning model on students’ environmental literacy skills in Grade X at MAN 1 Samarinda. The research employed a quantitative approach using a quasi-experimental method with a Pretest-Posttest Control Group Design. The sample consisted of class XF and XG, each comprising 30 students. Sampling was conducted using the Simple Random Sampling technique, resulting in class XF as the experimental group and class XG as the control group. To measure students’ environmental literacy covering knowledge, cognitive skills, attitudes, and environmental behavior the N-Gain test was applied. The results of the N-Gain analysis showed that the control group experienced an increase in the low to moderate category, while the experimental group demonstrated more significant improvement, particularly in the behavioral domain, which obtained an N-Gain score of 0.86 categorized as high. This indicates the effectiveness of the TPS model in encouraging changes in students’ environmental behavior. Furthermore, hypothesis testing was conducted using the Mann-Whitney U test with a 5% significance level. The results showed a p-value of 0.001 < 0.05, indicating that H₀ was rejected and H₁ was accepted, meaning there was a statistically significant difference. Thus, it can be concluded that the Think Pair Share learning model has a significant effect on students’ environmental literacy in Grade X at MAN 1 Samarinda.

Analisis Penggunaan Media Canva Untuk Meningkatkan Minat Belajar Siswa

Wed, 16 Jul 2025 00:00:00 +0000

This study aimed to explore the effectiveness of using Canva application as a learning media in increasing students' interest in learning. Learning media has an important role in creating an interactive and fun learning process, especially in today's digital context. Canva is a web-based graphic design application that provides various features and attractive templates to support learning activities. Through the literature study method, this research examined a number of relevant articles and previous research results regarding the utilization of Canva in the educational environment. The results of the literature review show that the use of Canva as a learning media can provide a more visual, creative, and interesting learning experience for students. The five main articles analyzed showed a significant increase in learning interest after Canva was used in the learning process, both in the form of presentations, infographics, learning videos, and other visual media. In addition to increasing interest in learning, the use of Canva is also proven to make it easier for teachers to develop teaching materials that are more innovative and in accordance with the characteristics of today's students. The use of Canva not only affects the motivational aspect, but also has an impact on better student learning outcomes. Therefore, Canva is recommended as an alternative digital learning media that can create an effective and fun learning atmosphere.

Analisis Quantitative Strategic Planning Matrix (QSPM) dan Perumusan Strategi Bisnis Berbasis Business Model Canvas pada Apotek Permata Pondok Gede

Rosiyana Rosiyana, Kosasih Kosasih, I gede Made Wirabarata — Tue, 15 Jul 2025 00:00:00 +0000

This study aimed to analyze and formulate new business strategies to optimize the performance of Apotek Permata Pondok Gede using the Quantitative Strategic Planning Matrix (QSPM) and Busniness Model Canvas (BMC) approaches. An exploratory quantitative method was employed, incorporating internal and external strategic analyses through tools such as SWOT, IFE, EFE, IE Matrix, Grand Strategy Matrix, and TOWS analysis. These findings were integrated into the QSPM framework to prioritize strategic alternatives and mapped onto the nine elements of the BMC to design an adaptive business model. Data were collected through interviews, observation, documentation, and triangulation. The analysis identified six priority components within the BMC-Customer Relationships, Value Propositions, Channels, Revenue Streams, Key Activities, and Key Resources-as critical to the pharmacy’s strategic development. The QSPM results indicated that forming strategic patnerships with technology providers to support the implementation of the PSEF (Electronic System for Pharmaceutical Services) and integrate it with the pharmacy’s operations yielded the highest Total Attractiveness Score (TAS) of 6.19, making it the top strategic priority.

Analisis Kesulitan Belajar Peserta Didik dalam Memahami Materi Pembelajaran Kimia Kelas XI MIA SMA

Tue, 15 Jul 2025 00:00:00 +0000

Many high school students consider chemistry to be a difficult subject. Most students still have difficulty understanding chemical concepts comprehensively, but the obstacles they experience have not been fully identified by teachers. Chemistry is one of the subjects that is less favored by students, because science, especially chemistry, is studied abstract things. Students' difficulties in learning chemistry result in many students experiencing failure in learning chemistry material. This study aims to describe and explain various learning difficulties and the factors causing difficulties in learning chemistry experienced by high school students. This study involved 44 students from all grades XII MIA and one chemistry teacher as the subjects. This study used a phenomenological research type with a qualitative approach. The data collection process was carried out using document study methods, observation, questionnaires, and interviews. Based on the results of the study, the level of student learning difficulties is categorized as slightly difficult (43%), quite difficult (48%), and difficult (9%). Internal factors that cause learning difficulties include a lack of understanding of chemistry material, low mathematical ability, and minimal motivation in learning chemistry. External factors that influence learning difficulties include the teacher's teaching methods, the negative impact of socializing with peers, and less conducive learning situations and times.

Pengembangan Permainan MATCHEL (Matching Chemical Elements) Berbasis Android sebagai Media Pembelajaran Kimia Unsur untuk Meningkatkan Hasil Belajar Peserta Didik

Fadia Mu'minatus Solekha, Rudiana Agustini — Sun, 13 Jul 2025 00:00:00 +0000

Penelitian ini bertujuan untuk mengetahui kelayakan media permainan MATCHEL berbasis android sebagai media pembelajaran dalam upaya meningkatkan hasil belajar peserta didik pada materi kimia unsur. Kelayakan media ditinjau berdasarkan tiga aspek, yaitu validitas, kepraktisan, dan keefektifan. Instrumen yang digunakan meliputi lembar validasi untuk mengukur validitas, angket respon peserta didik dan lembar observasi aktivitas untuk menilai kepraktisan, serta soal pretest dan posttest untuk mengevaluasi keefektifan. Jenis penelitian yang digunakan adalah Research and Development (R&D) dengan model pengembangan 4D oleh Thiagarajan, namun penelitian dibatasi hingga tahap pengembangan (development). Uji coba dilakukan pada 29 peserta didik kelas XI-Merdeka 1 di SMA IPIEMS Surabaya. Hasil penelitian menunjukkan bahwa media permainan MATCHEL memiliki tingkat validitas isi dan konstruk dengan skor modus masing-masing sebesar 3 dan 4, yang menunjukkan kategori valid. Aspek kepraktisan ditunjukkan melalui persentase angket respon peserta didik sebesar 95,97% dan hasil observasi aktivitas sebesar 91,67%, yang termasuk dalam kategori sangat praktis. Aspek keefektifan dianalisis melalui uji Paired Sample T-Test yang menunjukkan adanya peningkatan hasil belajar setelah penggunaan media, serta persentase ketuntasan klasikal sebesar 89,65%. Dengan demikian, dapat disimpulkan bahwa media permainan MATCHEL berbasis android layak digunakan sebagai media pembelajaran untuk meningkatkan hasil belajar peserta didik pada materi kimia unsur.

Development of Four-Tier Multiple Choice (4TMC) Test Instrument Based on Higher Order Thinking Skill (HOTS) on Elements, Compounds and Mixtures Material

Berliana Wanodya Diva Saputra, Lulu Tunjung Biru, R. Ahmad Zaky El Islami — Sun, 13 Jul 2025 00:00:00 +0000

It is known that some schools in Serang City are still not optimal in empowering students' Higher Order Thinking Skill (HOTS) habits and tend to lead to the C1 - C3 cognitive domain. The purpose of this study was to describe the level of validity and analyze students' responses to the Higher Order Thinking Skill (HOTS)-based Four-Tier Multiple Choice (4TMC) on Elements, Compounds, and Mixtures material in class VIII junior high school students (Phase D). Research and development was conducted using the R n D (Research and Development) method. The research was conducted using the ADDIE model which refers to the Analysis, Design, Development, Implementation, and Evaluation stages. The instruments used are interview instruments, validation questionnaires and learner response questionnaires. The subjects in this study were 3 expert lecturers of Science Education and 60 junior high school students in grade VIII. The validity level of the HOTS-based test instrument reached a value of 93.20% with the category “Very Feasible” and obtained the results of students' responses with the category “Good” at a percentage of 79.98%. Therefore, the HOTS-based 4TMC test instrument is very feasible to be used by teachers as a reference for conducting tests on science materials, especially elements, compounds, and mixtures.

Efektivitas Penggunaan Media Augmented Reality berbasis Pendekatan Joyful Learning Terhadap Kognitif dan Literasi Digital Siswa

Dhuwi Putri Meilinda, Dodi Rahayu Prasetyo — Sun, 13 Jul 2025 00:00:00 +0000

The purpose of the study was to determine the effectiveness of the use of Augmented Reality (AR) media based on the Joyful Learning approach to cognitive abilities and digital literacy of students and describe students' perceptions of learning on the material of the circulatory system. This study used a quantitative approach with a pre-experiment One Group Pretest-Posttest Design. The research subjects were 35 students from Class VIII of SMP Negeri 1 Gebog. The data collection process was through multiple choice tests (pretest and posttest) and digital literacy scores. Wilcoxon test results showed a significance of 0.000 (<0.05), indicating a difference. The average value of N-Gain is 0.5790, indicating the effectiveness of learning. The digital literacy questionnaire shows an average score of 41.83 (83.66%) which is in the high-very high category. The results of the study state that Augmented Reality (AR) media combined with the Joyful Learning approach is said to be effective in improving learning outcomes (cognitive), digital literacy and positive student perceptions of science learning.

Analisis Pengendalian Kualitas Produksi dengan Menggunakan Pendekatan Logika Fuzzy Failure Mode and Effect Analysis (FMEA)

M. Aldi Muzani, Saufik Luthfianto — Mon, 30 Jun 2025 00:00:00 +0000

The rapid growth of the manufacturing industry demands that companies continuously enhance product quality to meet consumer needs and maintain competitiveness in the global market. In this context, quality control becomes a strategic element that not only ensures product consistency but also influences corporate reputation and operational efficiency. This study was conducted at PT Industri Komkar Indonesia, a manufacturing company specializing in rubber components, particularly rubber bust boots. The research aims to identify the factors contributing to product defects and uncover the root causes that may reduce customer satisfaction. The method employed is Fuzzy Failure Mode and Effects Analysis (Fuzzy FMEA), an approach capable of addressing uncertainty in risk assessment through the application of fuzzy logic. Calculations are carried out by evaluating the Fuzzy Risk Priority Number (FRPN) for each potential failure mode. The analysis reveals that machine breakdowns or suboptimal machine conditions are the primary causes of product defects. Therefore, corrective actions are essential, including routine machine maintenance, enhanced operator training, and stricter monitoring of the production process. These measures are expected to reduce product failure rates, improve customer satisfaction, and lower production costs resulting from defective products.

Model Bisnis Klinik POLTRADA berbasis Blue Ocean Strategy (BOS) sebagai Fasilitas Kesehatan Tingkat Pertama (FKTP) Tabanan Bali

Reinaldy Yuda Afriza, Sahat Saragi, Lies Putriana — Thu, 26 Jun 2025 00:00:00 +0000

Poltrada Clinic is one of the First Level Health Facilities in Bali that serves 634 ‘BPJS Kesehatan’ participants. The clinic under the Ministry of Transportation has the opportunity to develop its services and business reach along with the development of the number of industries in Tabanan. Therefore, its performance needs to be evaluated to formulate an optimal business strategy. The analysis method uses SWOT analysis followed by the Quantitative Strategic Planning Matrix and Blue Ocean Strategy approaches to obtain the right strategic priorities and business models. Data collection was carried out by interviewing 8 informants. The results of the data analysis show: The SWOT matrix produces (x, y = 0.84; 1.89) where this point is in quadrant I, which means the clinic is in a favorable situation. Based on the CPM results from 7 key factors, Poltrada Clinic has a score of 3.49 which is in the first position compared to 3 existing clinics. This means that Poltrada Clinic has a stronger competitive advantage in various key factors for the success of the health service industry. The results of the QSPM matrix processing show that the highest value lies in alternative strategy 1, namely "Utilizing qualified facilities, existing human resources, complete health services, fast-accurate services and 24-hour services to attract cooperation with companies and transportation agencies in conducting basic MCU tests (S3, S4, S7, S8, S9, O3)". The strategy canvas shows a high offering value for each competency factor. Based on the blue ocean strategy, the Bali Poltrada Clinic must eliminate the inpatient room facility which is now an observation room to reduce operational costs. Reduce Operational costs due to excess human resources by maximizing the role of each profession. Raise ongoing digitalization, work motivation with performance-based incentives, and improve the clinic’s image through active promotion. Create basic MCU services, telemedicine services and collaborate with BPJS, companies including hotel/resorts, department of Transportation and physiotherapy. Poltrada Clinic is also advised to introduce a new tagline, namely: "Accurate examination, ready in 25 hours" which means accurate examination with the support of telemedicine technology, quality MCU services, and readiness more than just 24 hours for better health.

Development of Learning Video Media Based on Contextual Teaching Learning on the Theme of My Environment is Polluted to Develop Creative Thinking Skills of Junior High School Students

Yani Kurniasih, Suroso Mukti Leksono, Adi Nestiadi — Wed, 25 Jun 2025 00:00:00 +0000

This study is based on the constraints found in the field regarding the science learning process in junior high schools. Learning activities oriented towards contextual learning and students' creative thinking skills have not been implemented optimally. Creative thinking skills can be implemented by developing them through video learning media based on Contextual Teaching Learning. This study aims to determine the level of validation of video learning media based on Contextual Teaching Learning on the theme of my polluted environment to develop the creative thinking skills of junior high school students. The method used is Research & Development (with the 4D model), namely the define, design, development and dissemination stages. The development stage shows the results of the validity of video learning media based on contextual teaching learning on the theme of my polluted environment to develop the creative thinking skills of junior high school students that based on validation by material experts, the percentage value is obtained 88,40% In the category "Very valid", expert validation by media experts obtained a percentage value of 81,67% In the category "Very Valid" And practitioner validation obtained a percentage value of 93,33% % in the category "Very valid". The results of the validity level of the learning video media product reached a percentage value of 87,80 % in the category “Very valid”.

The Influence of the PjBL-STEM Learning Model on Students' Learning Independence in the Circulatory System Material

Nurillah Nurillah, R. Ahmad Zaky El Islami, Lulu Tunjung Biru — Mon, 23 Jun 2025 00:00:00 +0000

Low learning independence is a challenge in science learning. The right learning model, such as PJBL-STEM, can be an alternative for students' understanding of the material in depth. This study was conducted to determine the influence of the PjBL-STEM learning model on students' independence in learning the circulatory system material. The method used is a quasi-experiment with a pretest-posttest control group design, involving two classes, namely, the experimental class and the control class. This research instrument includes a learning independence questionnaire and an observation sheet on learning implementation. The results of the research that have been carried out show that the PjBL-STEM learning model has an influence on student independence in learning. The data was analyzed through IBM SPSS version 26. The results of this hypothesis test show that the PjBL-STEM model significantly increases student independence in learning, obtaining a significance value (2-tailed) of 0.022 < 0.05, thus H0 is rejected and H1 is accepted, which corroborates that the PjBL-STEM model has a significant effect on increasing student learning independence in circulatory system materials.

Validitas LKPD Strategi Konflik Kognitif untuk Mereduksi Miskonsepsi pada Materi Hidroakrbon

Dwi Irmayanti, Bertha Yonata — Mon, 23 Jun 2025 00:00:00 +0000

The development of the cognitive conflict-based Student Worksheet (LKPD) plays a role in reducing students' misconceptions regarding hydrocarbons. In this study, the LKPD was created in print format to facilitate the completion of exercises. This LKPD contains information presentations, true statements, and ambiguous statements to create cognitive conflicts for students, as well as reflection questions for conceptual reconstruction. The aim of this research is to determine the validity of the cognitive conflict strategy LKPD. This study employs a Research and Development (R&D) approach based on the 4D development model, which includes Definition, Design, Development, and Dissemination. However, it only reaches the development stage. The research utilized a validation sheet instrument for the LKPD. The validation results indicate that the developed LKPD received a median score ranging from 4 to 5, indicating that the LKPD is valid based on content validity and construct validity. The conclusion of this study states that the developed cognitive conflict strategy LKPD is valid and can serve as an effective learning medium to reduce students' misconceptions about hydrocarbons based on validity aspects.

The Effect of Implementing the Padlet-Based Socrates Method on Students' Critical Thinking Skills

Nadya Leony Iskandar, Trian Pamungkas Alamsyah, Vica Dian Aprelia Resti — Wed, 25 Jun 2025 00:00:00 +0000

This research aimed to evaluate the effect of applying the Socratic Method based on the Padlet platform on students' critical thinking abilities. This research used a quantitative approach with a quasi-experimental design, pretest-posttest control group type. The research subjects were class IX students of SMP Muhammadiyah 4 Tangerang. The instruments used were essay questions to measure critical thinking skills and observation sheets to assess the implementation of learning. The results of the analysis show that there was a significant difference between the posttest scores of the experimental group and the control group, which is indicated by a significance value of 0.000 (p < 0.05). Apart from that, the average N-Gain score achieved by the experimental group was 0.8, which is in the high category. These findings indicate that the integration of the Socratic Method with Padlet can significantly improve students' critical thinking abilities. Thus, this learning method is worthy of consideration as an alternative strategy in the learning process, especially in developing critical thinking skills at the secondary education level.

Pengembangan LKPD Berbasis Model SSCS (Search, Solve, Create, And Share) Materi Pemisahan Campuran Untuk Menumbuhkan Keterampilan Berpikir Kritis Siswa Kelas VIII SMP

Titi Dewi Anggraeni, R. Ahmad Zaky El Islami, Adi Nestiadi — Sun, 22 Jun 2025 00:00:00 +0000

Penelitian ini mempunyai tujuan untuk mencari tahu tingkat validitas dan respon siswa terhadap bahan ajar LKPD berbasis model SSCS untuk menumbuhkan keterampilan berpikir kritis siswa. Digunakan model pengembangan 4-D dengan tahapan define, design, develop, disseminate. Metode yang peneliti pakai ialah metode Research and Development (R&D) dengan instrumen berupa angket wawancara, angket respon siswa, dan angket validasi. Data dianalisis secara deskriptif kuantitatif dan kualitatif. Hasil persentase validasi bahan ajar LKPD yang diperoleh dari validator ahli materi 90,20% (sangat valid), validator ahli bahan ajar 87,70% (sangat valid), validator ahli praktisi 90,97% (sangat valid). Hasil dari tingkat respon siswa menunjukkan nilai persentase dengan rata-rata 86,07% (sangat valid). Melalui temuan tersebut dapat ditarik simpulan bahwa LKPD berbasis model SSCS materi pemisahan campuran dapat siswa gunakan pada kegiatan pembelajaran IPA.

Worn Rail Handling Process at Curve No.16A KM 4+8/0 Downtrack Line Manggarai – Tanah Abang

Nurmagita Pamursari, Muhamad Farras Fadhilah, Nurwanda Sari — Sun, 22 Jun 2025 00:00:00 +0000

Railways is a unified system consisting of infrastructure, facilities, and human resources, as well as norms, criteria, requirements and procedures for the implementation of railway transportation. Railroad infrastructure is a railway line, train stations and train operating facilities. Railway maintenance activities are preventive measures (preventive) and / or replacement in accordance with the technical age. In this study there are several types of maintenance in handling rail replacement on the Manggarai - Tanah Abang crossing. From this study the total wear that occurred from KM 4+800 to 5+00 reached 232.2 meters of track. Wear occurs in curve number 16A. Then there are several treatments carried out such as checking rail material data, replacing rail roads, maintaining forces and electricity, normalizing arrows, and thermite welding. In this rail replacement, maintenance is carried out by inspecting the railroad, maintaining the lighting force whose height must be adjusted to the radius of the curve, and returning the arrows which require prior calculation in carrying out maintenance. Calculation of arrows and elevation must be in accordance with applicable regulations or standards.

Development of E-LKPD Based on Guided Inquiry on Earth Structure Material and Its Development to Facilitate Students' Creative Thinking Skills in the Independent Curriculum

Ghina Aghniah Malahayati, Lukman Nulhakim, R. Ahmad Zaky El Islami — Sat, 21 Jun 2025 00:00:00 +0000

Teaching materials are one of the important learning supports. Therefore, the teaching materials used by teachers must be interactive and creative. The purpose of this study was to produce valid E-LKPD teaching materials and to describe the results of student responses to teaching materials in the form of E-LKPD based on guided inquiry on the material of earth structure and its development to facilitate students' creative thinking skills in the independent curriculum. The research method used in this study, namely the Research and Development (R&D) method according to Thiagarajan (1974) which has been adjusted to the needs of researchers, namely only up to the dissemination stage, up to the limited trial stage only. The research instruments used in this study, namely the Science Education expert validation sheet which had previously been validated by instrument experts and student response questionnaire sheets. Data analysis in this study was carried out descriptively quantitatively and qualitatively. The research data obtained the results of the validity level of the development of E-LKPD teaching materials based on guided inquiry on the material of the earth's structure and its development with an assessment by a validator of science education experts obtained a percentage of 88.36% and was included in the category of "Very Valid". For the results of student responses to E-LKPD, the percentage was 88% with the category of "Very Good". So that the use of E-LKPD teaching materials based on guided inquiry on the material of the earth's structure and its development can facilitate students' creative thinking skills and can be used for science learning.

Karakteristik Morfologi Polen Rotan Jernang Endemik Aceh (Calamus acehensis (Rustiami) W.J.Baker)

Revis Asra, Silvia Wahyuni, Ade Adriadi, Arikah Febrianti — Sat, 21 Jun 2025 00:00:00 +0000

Calamus acehensis (Rustiami), known as Aceh jernang rattan, is an endemic plant with high economic value in Aceh Province. This jernang produces red resin from its fruit which is used as a natural dye for rattan handicrafts as well as in traditional medicine, such as wound medicine, headaches, and post-natal pilis. The advantage of C. acehensis over other jernang species lies in its rapid growth and high resin production at a young age. At the age of two years, the plant has reached a height of two meters and started to bear fruit. Distinctive morphological features include stem internodes up to 50 cm, leaves up to 2 meters long, petioles 35 cm long, and black leaf sheaths with long and dense spines. This study aims to assess pollen morphology to determine its pollination system and taxonomic status. Pollen samples were taken from C. acehensis growing in Rieseh Tengoh Village, Aceh and from cultivation in Jambi. Analysis was conducted using a Scanning Electron Microscope (SEM) at the UGM Integrated Research and Testing Laboratory. Results showed that both samples had small pollen size, 1.212 µm (Aceh) and 1.116 µm (Jambi), with a single monocolpate aperture shape and flat exine ornamentation. These characteristics indicate the potential for wind-assisted cross-pollination (xenogamy) (anemogamy), providing important insights for the conservation and cultivation of Acehnese jernang.

Development of E-Booklet Based on Student Independent Learning on Temperature, Heat, and Expansion for Grade VII

Amara Dhiva Shifani Ramadhan, Sjaifuddin Sjaifuddin, Lulu Tunjung Biru — Sat, 21 Jun 2025 00:00:00 +0000

Penelitian ini bertujuan untuk mengembangkan E-Booklet berbasis pembelajaran mandiri pada topik Suhu, Kalor, dan Pemuaian, sebagai upaya untuk mendukung peningkatan pemahaman konsep dan pengembangan sikap belajar mandiri yang selaras dengan Kurikulum Merdeka. Inisiatif ini dilatarbelakangi oleh temuan lapangan yang menunjukkan rendahnya tingkat kemandirian dan prestasi belajar siswa, serta terbatasnya fasilitas laboratorium yang menghambat pemahaman konsep secara mendalam. Proses penelitian mengikuti model pengembangan ADDIE (Analysis, Design, Development, Implementation, Evaluation) yang termasuk jenis Penelitian dan Pengembangan. Pada tahap pengembangan, e-booklet divalidasi oleh ahli media, ahli konten, dan praktisi, dengan hasil sebesar 81,08%, 93,06%, dan 86,11% masuk dalam kategori “Sangat Valid”. Sementara itu, respon siswa pada tahap implementasi mencapai 86,81% masuk dalam kategori “Sangat Baik”. Temuan ini menunjukkan bahwa E-Booklet yang dikembangkan tidak hanya layak digunakan sebagai bahan ajar alternatif, tetapi juga efektif dalam meningkatkan pembelajaran mandiri di kalangan siswa SMP kelas VII, khususnya dalam menguasai konsep Suhu, Kalor, dan Pemuaian.

Pengembangan Video Interaktif Berbasis Etnosains Papua untuk Pengajaran IPA Terpadu

Lina Kumalasari, Mustika Irianti, Tamsi Nurfadia Rumagesan — Wed, 11 Jun 2025 00:00:00 +0000

This study discussed the development of Integrated Science teaching materials in the form of an Interactive Video Based on Papua's Local Ethnoscience. The local wisdom of Papua explained in the video includes sago trees, red fruit, matoa trees, and areca nut trees. This research used research and development (R&D) methods with the ADDIE model (Analysis, Design, Development, Implementation, and Evaluation). The subjects of this study include one subject matter expert teacher, one media expert lecturer, and seventh-grade students from SMP Negeri 26 in Sorong Regency. The instruments used to assess the feasibility of the interactive video based on Papua's local ethnoscience include a feasibility sheet by subject matter and media experts, a questionnaire to gauge students' responses to the use of the interactive video, and pretest and posttest trials to evaluate the effectiveness of the interactive video based on Papua's local ethnoscience. The data analysis results showed a score of 97.92% from the subject matter expert and 86.98% from the media expert, both of which fall into the very feasible category. The effectiveness of the Interactive Video Based on Papua's Local Ethnoscience was measured by student learning outcomes, which were categorized as high, with an n-gain score of ≥ 0.7. The students' responses indicated that 15 students 87% gave positive feedback on the use of the Interactive Video Based on Papua's Local Ethnoscience.

Pembuatan Produk Bioplastik sebagai Proyek dalam Pembelajaran STEM-PjBL untuk Meningkatkan Kemampuan Berpikir Kritis Siswa

Diana Melidyah Ardi, Henry Setya Budhi — Wed, 11 Jun 2025 00:00:00 +0000

This research project aimed to obtain data on learning outcomes using the Project-Based Learning (PjBL) method related to STEM activities in honing students' critical thinking skills in bioplastic manufacturing projects. This research used quantitative method with one group pretest-posttest design. The research targets were VII A students of SMP Negeri 1 Nalumsari as many as 22 students. The research instruments were pretest and posttest tests with analysis of homogeneity test, normality test, and N-Gain test. The test results showed that all data were normally distributed and homogeneous, so it was feasible to analyze further. The overall N-Gain average was 0.6029 (medium category), indicating an increase in critical thinking by 60.29% after learning. The indicators with the highest improvement were problem identification and analysis, while problem solving and drawing conclusions experienced low improvement. Although there are differences in each indicator, all stages of PjBL from problem determination to experience evaluation are proven to contribute to the development of students' critical thinking. This research shows that STEM-PjBL through bioplastic projects can be an alternative to contextualized science learning and 21st century skill oriented.

Hubungan Kekerabatan Lima Spesies Dari Family Poaceae Berdasarkan Karakter Morfologi

Wed, 11 Jun 2025 00:00:00 +0000

Indonesia is known as one of the countries with the highest biodiversity in the world, including in the Poaceae family or grasses that have important ecological and economic values. This study aimed to determine the kinship of five species from the Poaceae family based on morphological characters. The species observed include Cenchrus longispinus, Paspalum plicatum, Imperata cylindrica, Setaria parviflora, and Eleusine indica. The study was conducted quantitatively with a descriptive approach, through direct observation of morphological characters such as roots, stems, leaves, flowers, fruits, and seeds. Data were analyzed using a similarity index and visualized in the form of a dendogram. The results show that the five species have many morphological similarities, especially in root type, stem shape, growth direction, and flower type. The species with the closest kinship are Eleusine indica with Paspalum plicatum, and Cenchrus longispinus with Setaria parviflora. Meanwhile, the most distant relationship was found between Imperata cylindrica with Cenchrus longispinus and Setaria parviflora. PCA analysis was also used to identify the most influential morphological characters in distinguishing species. The results of this study provide an initial overview of the taxonomic relationships in the Poaceae family and the importance of morphological characters in plant systematics studies.

Pemeriksaan TiLV (Tilapia Lake Virus) Pada Ikan Nila (Oreochromis niloticus) Budidaya

Wed, 04 Jun 2025 00:00:00 +0000

Nile Tilapia (Oreochromis niloticus) is highly sought after by Indonesian consumers and is one of the leading commodities cultivated in freshwater. However, tilapia farming still frequently encounters challenges that lead to a decline in production, one of which is infection by pathogens such as Tilapia Lake Virus (TiLV). TiLV can infect fish in waters with temperatures above 25°C, with mass mortality peaking at 30°C, reaching a 50% death rate. Proper handling and control measures are essential to manage TiLV outbreaks effectively. TiLV detection in fish can be conducted using the Polymerase Chain Reaction (PCR) method. PCR-based virus detection is a diagnostic technique that identifies the presence of viral genetic material with high specificity and accuracy. This study aimed to detect TiLV infection in farmed Nile tilapia. The procedures included sample collection, necropsy, organ fixation, RNA extraction, PCR amplification, electrophoresis, and gel documentation analysis. Based on the PCR results, Nile tilapia samples tested positive for TiLV infection, as indicated by the presence of a 250 bp DNA band in the gel documentation system, aligning with the TiLV positive marker. Among the three fish showing suspected TiLV symptoms, two (66.6%) were confirmed infected.

Analisis Persepsi Guru Terhadap Efektivitas Pembelajaran Biologi Berbasis Technological Knowledge di SMA Kecamatan Samarinda Ulu

Nirza Pradana, Masitah, Ruqoyyah Nasution, Nelda Anasthasia Serena — Tue, 03 Jun 2025 00:00:00 +0000

The development of technology in the education sector today is not accompanied by wise use by students. One way to increase the productivity of technology use by students is through schools, where teachers act as facilitators. This certainly poses a challenge for teachers to maximize the role of technology in schools despite differences and limitations so that learning becomes effective. Teachers' perceptions of technology are important to analyze in efforts to improve the quality of technology-based learning. This study aims to determine teachers' perceptions of the effectiveness of biology learning based on technological knowledge at Samarinda Ulu District High School and the factors influencing it. The methods used are qualitative and quantitative, with measurement tools in the form of questionnaires and interview sheets. Data were analyzed using descriptive statistical analysis. Based on the questionnaire responses from 7 biology teachers at SMA Kecamatan Samarinda Ulu, the analysis of teachers' perceptions of the effectiveness of technology-based biology learning revealed a score of 71.42%, indicating that the majority of teachers have a very positive perception of the effectiveness of technology-based learning. Factors influencing this include teachers' and students' ability to use technology, the availability of infrastructure, the suitability of technology to the material presented, the diversity of applications used in learning, and discipline and motivation in learning.

The Influence of Product Variations, Service Quality, Delivery Methods on Purchasing Decisions in E-Commerce PT W Pharmacies with Moderating Promotional Variables

Dian Kurniasih, Kosasih, Nurmala Ahmar — Sun, 01 Jun 2025 00:00:00 +0000

The rapid growth of e-commerce in the pharmaceutical sector requires companies to understand key factors influencing consumer purchasing decisions. This study analyzes the effects of product variety, service quality, and delivery methods on purchasing decisions on PT W Pharmacy’s e-commerce platform, with promotion as a moderating variable. A quantitative approach using SEM-PLS was applied to data from 301 respondents. The results show that product variety has a positive and significant effect (coefficient = 0.207; t = 3.623; p = 0.000), as does service quality (coefficient = 0.157; t = 2.150; p = 0.032). Delivery methods show the strongest positive and significant effect (coefficient = 0.227; t = 4.223; p = 0.000). Promotion also directly has a positive and significant effect on purchasing decisions (coefficient = 0.362; t = 4.853; p = 0.000). As a moderating variable, promotion significantly strengthens the effect of service quality (coefficient = 0.196; t = 2.135; p = 0.033), does not significantly moderate product variety (coefficient = -0.090; t = 1.373; p = 0.170), and has a significant negative moderating effect on delivery methods (coefficient = -0.120; t = 2.019; p = 0.044). These findings emphasize the strategic role of delivery, service quality, and targeted promotion in enhancing online purchasing decisions

Development of Problem Solving Based E-LKPD to Improve Students' Metacognitive Skills on Acid-Base Material

Afrilia Dwi Adeliani, Rusly Hidayah — Sun, 01 Jun 2025 00:00:00 +0000

This study aims to develop problem solving-based e-worksheet to improve students' metacognitive skills on acid-base material. The components of metacognitive skills used are planning, monitoring and evaluation skills. The feasibility of problem solving-based e-worksheet is reviewed from its validity, practicality, and effectiveness. This research refers to the 4D design which consists of four main stages, namely defining (Define), Designing (Design), Developing (Develop) and Disseminating (Disseminate), but in this study it is limited to the third stage, namely Development (Develop). Limited trials were conducted on 32 students of class XI M1 at SMA IPIEMS Surabaya. The research results obtained include (1) The mode score for content and construct validity is 4, which is included in the valid category; (2) students' responses are included in the very good category with a percentage of 97.9%; (3) students' activities and learning implementation are included in the very good category with a percentage of 96.11%. (4) the normality test results show a Sig value of > 0.061 and 0.068, which means greater than the error rate (α) of 0.05, so the data is normally distributed; and (5) the Paired sample t-test results show a Sig value of 0.000, which means less than 0.05 so that H₀ is rejected and Ha is accepted. Thus, there is an increase in students' metacognitive skills after using problem-based e-worksheet.

Pengaruh Model Pembelajaran CTL (Contextual Teaching and Learning) terhadap Kemampuan Kolaborasi dan Hasil Belajar Siswa SMA pada Pembelajaran Biologi

Thu, 29 May 2025 00:00:00 +0000

Grade X students of SMA Negeri 2 Bontang experienced problems of low biology learning outcomes and lack of collaboration skills due to conventional teacher-centered learning. This study aimed to determine the effect of implementing the CTL (Contextual Teaching and Learning) model on students' collaboration skills and learning outcomes. The CTL model emphasizes active student involvement in the learning process, connecting material with real-life contexts, and encouraging collaboration and group discussion. This study used a quantitative approach with a quasi-experimental method and a non-equivalent control group design. Sampling was carried out by purposive sampling, with class X5 as the experimental class implementing the CTL model and class X6 as the control class using conventional methods. Data analysis was carried out using the N-Gain test and the Independent Sample t Test. The results showed that the experimental class had an N-Gain value of 0.72 (high category) while the control class had 0.59 (moderate category). The t test showed a significance value of 0.000 <0.05 for collaboration skills and learning outcomes. These results indicate a significant difference between the experimental class and the control class after the CTL model was implemented. Based on these results, it can be concluded that the application of the CTL model has a positive and significant effect on improving the collaboration skills and learning outcomes of class X students of SMA Negeri 2 Bontang in biology subjects.

Pengaruh Project Based Learning dengan Media Digital Microsite terhadap Keterampilan Berpikir Kritis Siswa pada Klasifikasi Makhluk Hidup

Thu, 29 May 2025 00:00:00 +0000

This study aimed to determine the effect of the project based learning model with digital microsite media on the critical thinking skills of class VII students at SMP Negeri 1 Samarinda. This study used a quasi-experimental design method with a non-equivalent control group design. The sample consisted of 20 students, with the experimental class using the project based learning model and the control class using the conventional model. The results showed that in the experimental class, the average pre-test and post-test scores increased from 60.35 to 86.95 with an N-Gain of 0.67. While in the control class, the average pre-test and post-test scores increased from 59.7 to 71.65 with an N-Gain of 0.29. The T-test results show that the significance value is 0.000 <0.0005 with t count> t table, so it can be concluded that the project based learning model with digital microsite media has a significant effect on the critical thinking skills of class VII students of SMP Negeri 1 Samarinda on the material of classification of living things.

Penerapan Model Pembelajaran Problem Based Learning untuk Meningkatkan Kemampuan Mengambil Keputusan Peserta Didik pada Materi Ekologi dan Keanekaragaman Hayati

Fitria Nur Mahmudah, Liwis Murihati, Supeno, Dewi Novi Wardani — Thu, 29 May 2025 00:00:00 +0000

Latar belakang penelitian adalah rendahnya kemampuan mengambil keputusan pada peserta didik kelas VIIA SMP Negeri 11 Jember Tahun Ajaran 2024/2025. Tujuan penelitian ini yaitu untuk meningkatkan kemampuan mengambil keputusan peserta didik kelas VIIA pada materi Ekologi dan Keanekaragaman Hayati Indonesia dengan menggunakan model pembelajaran Problem Based Learning (PBL). Jenis penelitian yang digunakan adalah Penelitian Tindakan Kelas (PTK). Desain penelitian meenggunkan model penelitian Kemmis dan Mc Taggart dengan empat tahap yaitu perencanaan, pelaksanaan, pengamatan dan refleksi. Penelitian ini dilaksanakan sebanyak dua siklus, pad tiap siklus terdiri dari dua pertemuan. Teknik pengumpulan data berupa pretest, posttest, Lembar Kerja Peserta Didik, dan lembar observasi pembelajaram. Teknik analisis data menggunakan Uji N-Gain Score. Hasil penelitian menunjukkan terdapat peningkatan kemampuan mengambil keputusan peserta didik berdasarkan Uji N-Gain Score pada siklus I sebesar 0,31 dengan kategori sedang dan siklus II sebesar 0,70 dengan kategori sedang. Kesimpulan dari penelitian ini yaitu model pembelajaran Problem Based Learning dapat meningkatkan kemampuan mengambil keputusan peserta didik kelas VIIA.

The Effectiveness of Student Worksheet with Problem Based Learning and Ethnoscience to Improve Critical Thinking Skills on Chemical Bonding Material

Audy Via Rahmawati, Muchlis Muchlis — Thu, 29 May 2025 00:00:00 +0000

Learning chemistry through the merdeka curriculum prioritize on enhancing 21^st century skills include students' critical thinking skills. Due to a number of critical thinking skill constraints, students find out the difficulties to comprehend theory-based in chemistry materials, such as chemical bonding materials. By problem-based learning that integrates ethnoscience content can make learning more meaningful is a way to train and enhance critical thinking skills. This research conducted in terms to quantify the effectiveness of Problem Based Learning and ethnoscience-based student worksheet on chemical bonding material to enhance the critical thinking skills of XI grade senior high school students. The research method used are descriptive quantitative and qualitative of One Group Pretest-Posttest Design. With 36 students of class XI-8 in SMAN 16 Surabaya as the subject, the worksheet stated effective according to the increasingly of N-gain value with an average of 0.7206 that is in the high category. As much as 26 students include into the high category, 8 fall into the medium category, and 2 fall into the low category. Therefore, the finding suggest that student worksheet with Problem Based Learning and ethnoscience-based student worksheet on chemical bonding materials can significantly improve students’ critical thinking abilities.

Development of Greenhouse Effect Teaching Tool to Develop Science Process Skills in Class VII Middle School Students on the Theme of Global Warming

Yulianah Yulianah, Suroso Mukti Leksono, R. Ahmad Zaky El Islami — Thu, 29 May 2025 00:00:00 +0000

The purpose of this research is to create a greenhouse effect teaching tool in science learning on the theme
of global warming to foster Science Process Skills (PPP) in students. The development model used is a 4-
D development model which consists of four stages: define, design, develop, and disseminate. Product
validation was carried out by science education experts and practitioner experts who showed the level of
product validity with a value of 86.18% included in the "excellent" category. The implementation of the use
of greenhouse effect props was carried out by grade VII students at one of the junior high schools in Serang
City. The data of the student response questionnaire showed that the teaching aids were able to grow PPP
with a score of 80.37% with the "very good" category. The results of this study prove that the use of teaching
aids in science learning on the theme of global warming can help grow students' PPP through practicum
activities.

Hubungan Keterampilan Public Speaking Dengan Kemampuan Berpendapat Peserta Didik Pada Materi Keanekaragaman Hayati Di Kelas X MAN 1 Samarinda Plus Keterampilan Dan Riset

Noor Wanda, Vandalita M Magdalena Rambitan — Thu, 29 May 2025 00:00:00 +0000

This study investigates the relationship between students' public speaking abilities and their capacity to articulate opinions on biodiversity topics in Class X at MAN 1 Samarinda (specializing in skills and research). Employing a quantitative approach with a correlational design, the researcher selected participants using purposive sampling from classes X-A and X-C. Data were analyzed using the Spearman correlation test, which produced a p-value of 0.001 indicating statistical significance (p < 0.05). The findings reveal a strong, positive, and significant relationship between public speaking proficiency and students’ ability to express views on biodiversity.