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This study aims to develop Student Worksheets (LKPD) incorporating the traditional serok kuali game on multiplication material for third-grade students at SDN Deket Wetan Lamongan and to determine their validity, effectiveness, and practicality. The research method employed was Research and Development (R&D) using the ADDIE model, which consists of the analysis, design, development, implementation, and evaluation stages. The research subjects included two expert validators, namely a media expert and a subject-matter expert, as well as 15 third-grade students at SDN Deket Wetan Lamongan. Data were collected using expert validation questionnaires, conceptual understanding tests (pretest and posttest), and student response questionnaires. The results showed that the developed LKPD demonstrated a very high level of validity, with a score of 97.5% from the media expert and 95.55% from the subject-matter expert. The effectiveness test indicated an improvement in students’ learning outcomes, with an N-Gain score of 0.803 (80.3%), which falls into the effective category. In addition, students’ responses to the use of the LKPD reached a percentage of 95.6%, categorized as very good. Based on these findings, it can be concluded that the LKPD incorporating the traditional serok kuali game is feasible, effective, and practical for use as instructional material to enhance third-grade elementary school students’ understanding of multiplication concepts.

Teaching plane geometry often faces challenges due to the abstract nature of geometric concepts, which are often detached from students’ real-life contexts. This study is a development research (Research and Development) using a modified 4D model reduced to 3D (Define, Design, Develop) aimed at producing and testing the validity of a Student Worksheet based on ethnomathematics with Batik Sekundang motifs on plane geometry material oriented toward Contextual Teaching and Learning (CTL). Validation was conducted by two mathematics education experts who assessed the feasibility of content/material, media, and language/readability using a Likert scale instrument. The data were analyzed quantitatively in a descriptive manner using percentage formulas to determine the level of validity. The results showed that the student worksheet obtained a validity percentage of 87.50% in content feasibility (very valid), 80.76% in media (valid), and 87.50% in language (very valid), with an overall average of 85.25%, which falls into the very valid category. Based on these results, the ethnomathematics-based student worksheet with Batik Sekundang motifs is declared suitable to be used as a supporting teaching material for contextual and meaningful plane geometry learning for students in South Bengkulu.

Learning geometric transformations requires a strong conceptual understanding due to their abstract nature. One effort to enhance students’ conceptual understanding of mathematics is through the development of contextual and meaningful instructional materials that incorporate local culture. This study is a research and development (R&D) study employing the 4D model (Define, Design, Develop, and Disseminate) aimed at examining the validity of the developed Student Worksheets. The validation of the Student Worksheets was conducted by two experts in mathematics education who evaluated the aspects of content feasibility, media, and language and readability. The data were analyzed using descriptive quantitative methods with percentage scores to determine the level of validity of the Student Worksheets. The results showed that the developed Student Worksheets obtained a validity percentage of 93.75% for the content feasibility aspect (very valid), 80.77% for the media aspect (valid), and 87.50% for the language and readability aspect (very valid), with an overall average of 87.34%, which falls into the very valid category. Based on these results, the ethnomathematics-based Student Worksheets using the Kepahiang Traditional House context are considered feasible for use as supporting instructional materials in learning geometric transformations.

Science lessons in primary school significantly contribute to the early development of logical, scientific and systematic reasoning skills.   However, learning science can be challenging, especially when it comes to understanding abstract concepts and cause-and-effect interactions.   This is due to the fact that, as per Piaget's theory, primary school students are still in the concrete operational stage and have limited cognitive growth. Data regarding abstraction ability and causal reasoning in the context of science education were collected from various scientific sources using the literature review research methodology.  According to the research findings, STEAM integration, project-based learning strategies such as Project Based Learning (PBL), and the use of real and visual aids can help lower learning barriers. Successful learning is also influenced by the teacher's role as facilitator, which involves presenting the material in a relevant and contextualized way and fostering a positive learning environment. Real-world examples and exceptional examples, such as the use of worksheets based on cause-and-effect relationships and basic experiments, demonstrate how useful these strategies are for improving abstract thinking and understanding of cause-and-effect relationships. Developing innovative teaching methods based on practical, exploratory and integrative experiments is essential for maximizing the scientific understanding of primary school students.

Contextual Teaching and Learning (CTL) is a pedagogical approach that links the learning material to students' everyday life, making the learning process more meaningful and easier to understand. The aim of this literature review is to identify the effectiveness of context-based teaching materials in enhancing students' conceptual understanding, motivation, and learning outcomes in elementary schools. Studies focusing on the development of teaching materials, interactive modules, contextual worksheets, and e-modules were analyzed in depth. The findings show that the contextual approach consistently enhances student engagement, conceptual understanding, and critical thinking skills. However, several challenges need to be addressed, such as limited resources, lack of teacher competence, and the scarcity of relevant local learning resources. This article provides strategic recommendations related to the development and implementation of more effective and sustainable context-based teaching materials, taking into account resource availability and the improvement of teacher competencies to ensure the success of contextual learning in elementary schools.

In the learning process, educators often face challenges in helping students achieve optimal learning outcomes. One of the contributing factors is the dominance of teacher-centered learning models, which frequently leads to low student engagement and reduced motivation. This condition affects students’ curiosity, particularly in Science learning, which requires active participation and exploration. Therefore, innovative teaching materials are needed to encourage student involvement while simultaneously stimulating their curiosity. One alternative that can be utilized is the Student Worksheet (Lembar Kerja Peserta Didik/LKPD), which can be designed systematically and contextually to support active learning. This study aims to determine the effectiveness of using LKPD in enhancing students’ curiosity in Grade VII Science learning at SMPN 1 Sanrobone. The research employed a Classroom Action Research (CAR) approach carried out in two cycles, each consisting of planning, implementation, observation, and reflection stages. The findings indicate a significant increase in students’ curiosity after the implementation of LKPD, as shown by improvements in questioning behavior, interest in the material, and the ability to observe and explore scientific phenomena. Based on these results, it can be concluded that the use of LKPD is effective in fostering students’ curiosity and contributes to a more interactive and meaningful Science learning experience.

This research aims to improve the mathematics learning outcomes of Grade VII B students at SMP Darul Ulum 5 Rebalas through the implementation of Madurese language-based ethnomathematics. The study is motivated by the students' difficulties in understanding mathematical concepts delivered in formal Indonesian, as their daily communication relies on the specific Madurese dialect of Rebalas Village. This study employs the Classroom Action Research (CAR) method using the Kemmis and McTaggart model, conducted in two cycles. Each cycle consists of planning, action, observation, and reflection stages. The subjects of this research were 28 students from class VII B. The research instruments included test instruments in the form of group Student Worksheets (LKPD) and observation sheets for both teacher and student activities. The material focused on the topic of Lines and Angles. The results indicated an improvement in student learning outcomes from Cycle I to Cycle II. In Cycle I, the average group score was 80.2, which increased to 88 in Cycle II. Observations of student activities also showed a shift from passive participation in Cycle I to active and enthusiastic engagement in Cycle II. Furthermore, teacher observations showed significant improvement; initial issues regarding time management and excessive workloads were resolved, resulting in more enthusiastic and punctual teaching delivery. These findings demonstrate that the use of Madurese-based ethnomathematics helps students grasp mathematical terms more easily, increases discussion participation, and creates a more comfortable and interactive classroom atmosphere, thereby leading to improved learning outcomes.

This study investigates the effect of added sugar on the stability of soap bubbles through a hands-on science activity titled “Magic Bubbles” conducted with third-grade students at SDN 1 Karangrejo. The activity was implemented collaboratively, where students observed, experimented, and drew conclusions together under teacher guidance, without the use of individual worksheets. Using a participatory observation method, the research described students’ engagement, reactions, and learning behavior during the process. Findings revealed that soap bubbles containing added sugar demonstrated greater stability and a longer lifespan compared to those without sugar. Students showed high levels of enthusiasm, curiosity, and active participation throughout the experiment. The activity not only fostered engagement but also enhanced students’ gross motor coordination, observation skills, and early scientific reasoning. Furthermore, it encouraged cooperative learning and communication among peers. The results highlight the effectiveness of simple laboratory-based learning as a medium to introduce scientific inquiry at the elementary level. The “Magic Bubbles” activity aligns with the inquiry-based learning approach in science education, emphasizing direct experience, experimentation, and concept discovery through observation and guided reflection. This study demonstrates that contextual, play-based science activities can meaningfully improve motivation and conceptual understanding among young learners.

The Hazard and Operability (HAZOP) methodology is a qualitative risk analysis technique commonly used to detect potential work hazards. CV. Suryadi Sentosa, also known as Bapak Suryadi's Home Tempe Industry, is a home-based business that produces tempeh. Almost all of the production procedures are still carried out manually, and occupational accident analysis measures have not been implemented. The factory conditions indicate inadequate lighting and ventilation, as well as relatively slippery floors. It is also observed that the industry workers do not pay much attention to their posture, and they do not use personal protective equipment (PPE). This research was conducted directly at the CV. Suryadi Sentosa Tempe Factory, using interviews and observations of seven workers involved in the production process. The steps taken in this study are compiling the sequence of the production process. By using a Hazard and Operability (HAZOP) worksheet, identify potential risks, conduct risk control analysis, monitor and evaluate, implement improvements, and draw conclusions. The analysis found 9 stages of tempeh production at Mr. Suryadi's facility. Several improvements are needed, including involving several workers to handle soybean processing, creating ventilation to provide good and healthy air circulation for workers, adding lighting as a light source so that workers can perform their tasks comfortably, and using ergonomic chairs and work tables to prevent fatigue and increase factory productivity.

This classroom action research evaluates the effectiveness of Problem Based Learning in learning Biology on the topic of environmental change at Rosa de Lima Catholic High School Tondano, with the aim of improving the activities and learning outcomes of grade X students. The method used is two action cycles with stages of planning, implementation, observation, and reflection. The subjects are 10 students. Tools include Teaching Modules and Student Worksheets; Data was collected through observation sheets of teacher and student activities (scales 1–4) and 10-item learning outcome tests each cycle. The descriptive analysis calculates the grade average and classical completeness against the Minimum Completeness Criterion of 75. The results showed consistent improvement from cycle I to cycle II. Classical completeness increased from 66% (6 out of 9 students attended; average 76.67) to 90% (9 out of 10 students; average 81.00). The teacher's activity observation score increased from 3.75 to 3.91, while the student's activity from 3.50 to 3.60. The increase is fueled by the formulation of contextual problems, facilitation of guiding questions, individualized feedback, and more disciplined time management, which strengthens engagement, collaboration, and scientific reasoning. The findings indicate that Problem Based Learning is effective in improving Biology learning activities and outcomes on the topic of environmental change. This study adds to the empirical evidence in the context of high schools with low initial completeness and suggests further exploration of other Biology topics along with measurements of critical thinking skills and scientific attitudes for a more comprehensive picture of impact.

This study aims to analyze and describe mathematics learning planning at SMK Negeri 6 Padang, specifically including the preparation of Teaching Modules, implementation of assessments, and enrichment and remedial programs. Furthermore, this study also examines the role and implementation of mathematics Olympiad preparation, the use of Student Worksheets (LKPD), and the availability and utilization of Teacher's Handbooks and Student Handbooks. A qualitative approach with a case study method was used in this study. Data were collected through observation, in-depth interviews with mathematics teachers, and analysis of documents related to learning planning. The results of the study indicate that mathematics learning planning at SMK Negeri 6 Padang has referred to the applicable curriculum. The Teaching Modules are systematically arranged covering learning objectives, materials, activities, and evaluations. Assessments are carried out formatively and summatively, using various techniques to measure student understanding. In addition, the school also implements remedial programs for students who have not achieved learning completion and enrichment programs for students who have mastered the material, including preparation for the Olympiad. LKPD has been shown to facilitate students' understanding and active participation, while the Teacher's Handbook and Student Handbook are important resources. However, several challenges were found in the implementation, such as time constraints in compiling varied teaching modules and optimizing the use of assessment results for continuous learning improvements. So it ca be concluded that learning planning is effective, namely . Therefore, it is recomended that further training is needed to improve the quality of independent curriculum-based learning planning  

This study aims to assess the impact of using Talking Stick game as a learning media on students' learning outcomes and scientific communication skills in science lessons. This study was conducted using the Systematic Literature Review (SLR) method, by analyzing various relevant previous studies from elementary to secondary education levels. The research findings indicate that the Talking Stick learning technique can significantly improve student learning outcomes. This model has also been proven effective in improving science communication skills, conceptual understanding, active participation, and students' courage to express opinions during the learning process. The Talking Stick method emphasizes collaboration and involvement between students in a fun and interesting atmosphere. The use of various supporting media, such as question cards, posters, audio visuals, and student worksheets (LKS), increases the effectiveness of this method. The use of alternating sticks in question and answer sessions encourages students to be more confident and actively involved in the learning process. This also provides benefits for the development of students' critical thinking skills and emotional skills, which are very much in line with the needs of learning in the 21st century. The findings of this Talking Stick model research are recommended as an innovative strategy in science learning. Teachers are advised to combine it with interesting learning media to make the learning process more meaningful and enjoyable. tested the effectiveness of this method in various educational conditions. Furthermore, consistent application of the Talking Stick method can create an inclusive learning environment that is responsive to individual student needs. In the context of science learning, which often demands understanding of abstract concepts and problem-solving, this method can bridge the gap between theory and practice through active and reflective interaction.

Critical thinking skills are a fundamental aspect that needs to be instilled early in the educational process in elementary schools. However, the application of conventional learning media such as textbooks and worksheets tends to be less supportive of the development of these skills, especially in complex materials such as the solar system. To overcome this, the use of solar system diorama media is considered capable of bridging students' conceptual understanding with more contextual visual and exploratory experiences. Through a constructivist approach, students are given space to be actively involved in observing, discussing, and linking materials to real phenomena, so that their critical thinking skills can be honed more optimally. This study aims to evaluate the effectiveness of the use of diorama media in improving the critical thinking skills of elementary school students and examine students' responses to this learning method. The results of this study are expected to contribute to the development of innovative learning strategies that can support the quality of elementary education.

This research was conducted at the Foreign Language Laboratory of the Faculty of Languages and Arts, Universitas Negeri Medan, with the aim of developing a student worksheet (LKPD) for learning the topic "Guten Tag" for Grade XI students in the first semester. The worksheet was designed based on the ADDIE development model, which consists of five phases: analysis, design, development, implementation, and evaluation. The data for this research were sourced from the textbook Netzwerk Neu A1, specifically from pages 8–17, which cover the subtopics: greetings and farewells, introducing oneself and others, and asking about and responding to well-being. The developed worksheet was evaluated by a content expert and a media expert. The content expert assigned a score of 87.5, which falls into the “good” category, while the media expert assigned a score of 92.8, categorized as “very good”. The worksheet was also implemented and evaluated with a group of ten students from MAN 1 Medan, yielding an average score of 86.95, indicating it is “very suitable”. These findings suggest that the worksheet is appropriate for supporting A1-level German language instruction and can serve as an alternative teaching material for enhancing vocabulary, grammar understanding, and communicative competence in contextually relevant situations.

This research aims to review the teaching tools used at Madrasah Aliyah Negeri (MAN) 2 Kota Padang in order to support the implementation of the Independent Curriculum. Observations were carried out for two months, focusing on analysis of learning documents, interviews with teachers, and direct observation of the learning process in the classroom. Observation results show that the teaching tools at MAN 2 Padang City have been prepared in accordance with the principles of the Independent Curriculum, including teaching modules, student worksheets, and formative assessments that support differentiated learning. The teachers at this madrasa show good adaptability to curriculum changes, by applying varied and contextual learning methods. Students also show a positive response to learning that is more interactive and relevant to everyday life. However, several challenges were found, such as the need for further training for teachers and the provision of more diverse learning resources. Overall, the teaching tools at MAN 2 Padang City support a more meaningful and student-centered learning process, in line with the objectives of the Independent Curriculum.  

This study aims to determine the effectiveness of the use of Electronic Student Worksheets (E-LKPD) based on Liveworksheets in improving the learning outcomes of class VII students of SMP Negeri 14 Kota Serang on the Earth and Solar System material. LKPD functions to connect teaching and learning activities so that effective interactions occur between students and teachers, which can increase student activity to improve academic achievement. This study aims to identify improvements in student learning outcomes using ELKPD liveworksheet. This study uses a quantitative research type with a Pre-experimental design that collects and analyzes numerical data using research instruments. One Group Pretest - Posttest Design is a written design used which is combined with library research, namely using various supporting literature references in the data collection process without going into the field. Thus, it can be concluded that E-LKPD Liveworksheet is effective as a learning medium to improve student learning outcomes on the Earth and Solar System material

This study aims to describe the process of learning mathematics on percentage material through the use of play money with the Indonesian Realistic Mathematics Education (PMRI) approach in class VII SMP. The PMRI approach is used to link mathematical concepts with real contexts, in this case buying and selling activities using play money. This research is a descriptive qualitative research conducted at MTs Al-Mu'aawanah Pemulutan, Ogan Ilir. The research subjects were seventh grade students. The instruments used include Learner Worksheets (LKPD), observation, and interviews. The results showed that the use of play money can help students understand the concept of percentage more concretely and contextually. Students become more active in the learning process and are able to connect the concept of percentage with everyday situations. The PMRI approach proved to be effective in increasing students' engagement and understanding of percentage material.

This research aims to develop online mathematics learning tools based on the local wisdom of Papua in the form of Lesson Plan and E-Worksheet products that are oriented to students' critical thinking skills and mathematical problem-solving in materials of polyhedra which (1) validity aspects, (2) practicality aspects, (3) effectiveness aspects. The cultures used in this research are the kariwari traditional house and the kaki seribu traditional house as illustrations to explain the concept of polyhedra. The research method is research and development (R&D) using the ADDIE (Analysis, Design, Development, Implementation, and Evaluation) development design model. The subjects in this study are 8 students who are in grade VIII at Golden Gate Junior High School, Sorong City. The instruments used in this study are validation sheets, learning implementation observation sheets, teacher response questionnaires, student response questionnaires, and tests. The learning tool is valid if the results of the experts' assessment are at least in the "good" category. Learning tools are said to be practical if the results of teacher’s responses, student responses, and observations of learning implementation are at least in the "good" category. The learning tool is effective if the percentage of students who complete the critical thinking skills test and the math problem-solving ability test is at least 60%. This research produced online learning tools in Lesson Plan and E-Worksheet mathematics form based on local Papuan wisdom oriented to critical thinking skills and problem-solving skills of grade VIII junior high school students on flat-side space building materials. The validation results show that the product developed meets the valid criteria with a good category. The results of the test show that the product developed meets the practicality and effectiveness criteria. Practicality achieved the category “very good” based on teacher assessment, student responses, and the observation of learning implementation. Effectiveness achieves the effective category based on the test of critical thinking skills and mathematical problem-solving. The percentage of students who completed the critical-thinking skills test reached 87.50%, and the mathematical problem-solving ability test reached 75.00%.

This study explores the implementation of Lesson Study within the teaching practicum (PPL) program to enhance student engagement, learning outcomes, and the teaching competencies of pre-service teachers. Employing a Classroom Action Research (CAR) approach, the research was conducted in three cycles involving second-grade students at UPT SD Negeri Latsari. Each cycle consisted of the Lesson Study stages: planning, execution, and reflection. The findings indicate significant improvements in all targeted areas. Student engagement showed a steady increase, starting from 63% in Cycle 1 and reaching 91% in Cycle 3, supported by interactive strategies such as group worksheets, flipbook media, and the Team Games Tournament (TGT) model. Correspondingly, learning outcomes improved, with average test scores rising from 68.2 in Cycle 1 to 83.7 in Cycle 3. Furthermore, pre-service teachers demonstrated notable development in key teaching competencies, particularly in lesson planning, classroom management, and reflective practices. Overall, the study underscores the effectiveness of Lesson Study in promoting collaborative teaching practices, improving the quality of instruction, and fostering professional growth among pre-service teachers. The integration of innovative and interactive learning strategies within the Lesson Study framework contributed significantly to creating a more engaging and impactful learning environment for students.

This study aims to examine the impact of the Project-Based Learning (PBL) model in improving critical thinking skills (Higher Order Thinking Skills/HOTS) and mastery of Social Science (IPS) concepts among 8th-grade students at UPT SPF SMPN 4 Makassar. A quasi-experimental design with a nonequivalent control group was used, involving an experimental group (PBL) and a control group (conventional learning). The sample consisted of two classes (30 students per class) selected purposively. Data were collected through HOTS essay tests (pretest-posttest), PBL-based worksheets, and observation sheets. Data analysis was conducted using parametric statistical tests (independent sample T-test) supported by IBM SPSS Statistics 22 and Cohen’s d for effect size. The results show that, 1) the pretest indicated critical thinking and concept mastery were in the "Sufficient" category (96.67%), with only a small portion in the "Good" category (3.33%). After PBL implementation, post-test results revealed a significant improvement, with 93.33% in the "Good" category for critical thinking and a 23.33% increase in concept mastery. 2) PBL significantly enhanced critical thinking skills and 3) PBL significantly improved concept mastery in Social Science.