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21st-century skills are a crucial aspect that students must master, equipping them to face the challenges of modern development. In history learning, the use of Problem-Based Learning (PBL) is considered a powerful tool for transforming learning from rote memorization to active, problem-solving-based learning. This study aims to analyze the role of PBL in enhancing 21st-century skills in history learning through the Problem-Based Learning (SLR) approach. The research method used in this study is the SLR with a prism procedure. The data were obtained from a search of scientific articles through Google Scholar using the keywords Problem-Based Learning, 21st-Century Skills, and history learning. From the initial 2,540 articles obtained, after screening based on relevance, quality, and year range, six key articles were obtained. The study results indicate that PBL is effective in enhancing 21st-century skills through discussions, historical source analysis, and contextual problem-solving. This approach is considered appropriate for the curriculum because it encourages student-centered learning, rather than teacher-centered learning. Although PBL still faces several challenges in its implementation, it remains a relevant and effective learning strategy for developing 21st-century skills.

This study aims to determine the effectiveness of using Problem Based Learning (PBL) oriented E-LAPD to improve students' metacognitive skills on chemical equilibrium material, especially on the sub-material of factors that influence chemical equilibrium shifts. This study was conducted at SMAS Hang Tuah 4 Surabaya class XII-2 as many as 25 students. The type of research used is research and development (R&D) with a 4-D model that was tested on a limited basis using a one-group pretest-posttest design. Scoring on the pretest-posttest uses N-gain (normalized gain) which aims to determine the increase in metacognitive skills through the results of students' pretest-posttest scores. The results showed that the N-gain value for each component of metacognitive skills, namely planning skills, monitoring skills, and evaluating skills, obtained values ​​​​sequentially, namely 0.85; 0.73; and 0.74 which are included in the high category, from the assessment shows that the use of PBL oriented E-LAPD is declared effective in improving students' metacognitive skills. This is supported by the results of the Metacognitive Awareness Inventory (MAI) questionnaire, which showed a percentage of planning skills of 82.43% with very good criteria, monitoring skills of 81.86% with very good criteria, and evaluating skills of 77.67% with good criteria. These results indicate that the MAI questionnaire can support pretest-posttest data to determine the improvement of metacognitive skills in students.

This study discusses the development of thematic teaching materials in elementary schools to improve the quality of learning in accordance with the 2013 Curriculum. The research method used is research and development with the ADDIE model (Analysis, Design, Development, Implementation, Evaluation). The results show that the thematic teaching materials developed with approaches such as Project Based Learning (PjBL), Problem Based Learning (PBL), and Contextual Teaching and Learning (CTL) can enhance students' critical thinking, creativity, and social responsibility skills. The integration of local wisdom values as well as the use of digital and contextual teaching materials make learning more engaging, interactive, and meaningful. The thematic teaching materials based on these innovative learning models can help students develop 21st-century skills. Thus, the development of thematic teaching materials based on innovative models is an effective strategy for creating quality learning in elementary schools that is relevant to curriculum demands and the needs of today's learners. The use of technology and contextual approaches enriches students' learning experiences, making them more relevant and beneficial in daily life.

This research was conducted to assess the effectiveness of using the Problem Based Learning (PBL) approach in teaching poetry writing in Indonesian language classes. This method was applied to assess the extent of students' mastery of the material and their response to problem-based learning. Based on the results of the questionnaire distributed, it was found that materials such as procedural texts, expository texts, negotiation texts, poetry, drama, and novels are materials that often use the PBL model. The results show that around 75%–80% of students understand learning with the PBL approach and show active and enthusiastic responses during the learning process. However, the implementation of PBL faces a number of obstacles, including limited time allocation and the level of readiness of students in digesting complex problems. Thus, periodic assessment and adaptation of the learning approach are key to optimising the effectiveness of this method.

This research aims to determine the effect of learning using the Problem Based Learning model assisted by the Powtoon application on the learning outcomes of Class XI Madrasah Aliyah at the Islamic Education Park (TPI) Sawit Seberang. This research is a type of quantitative research with a Quasy Experimental Design. The research population was 36 students in class XI MIA A and 36 students in class XI MIA B, 36 students in class XI MIA C and 36 students in class, and X MIA C totaling 36 people as the control class. The instrument in this research is in the form of a test in the form of 30 multiple choice questions. Data analysis of student learning outcomes using the t-test formula, also with the help of SPSS version 25 data processing. Data analysis of student learning outcomes with the results of calculating the average learning outcomes shows that the experimental class which uses the Problem Based Learning models is higher than the control class. The prerequisite test is proven that the data is normally distributed and homogeneous. The results of the test calculation were obtained under count worth 9.709 and table worth 1.668 so that it shows tcount > table so Ha2 is accepted. The conclusions in this research explain that there are influences and differences before and after the implementation of the Problem Based Learning model on student learning outcomes in class XI Madrasah Aliyah at the Islamic Education Park (TPI) Sawit Seberang.

Fifth grade students' consistently poor reading comprehension abilities, which impeded their overall academic development and participation in language acquisition, served as the driving force for this study. Using a comic assisted problem based learning (PBL) model, the study, which involved 39 students at SDN Purwamekar, aimed to improve learning activities in order to increase teacher and student participation and, eventually, improve fifth grade students' reading comprehension skills. By using comic strips to illustrate issues, this creative method made learning more engaging and accessible for younger students. In order to enable iterative improvements, the study was conducted over two cycles using classroom action research technique. Only 25% of students (eight people) successfully completed the learning objectives in the first cycle, according to preliminary findings, while 75% (24 students) failed, suggesting difficulties with student motivation and comprehension. This led to changes like improving comic material and fostering more cooperative conversations. Significant progress was seen by the second cycle, with 30 students meeting the completion criteria and only four falling short of the objectives, indicating improved engagement and skill growth. In conclusion, the comic assisted PBL model effectively boosted reading comprehension skills among fifth grade students. The research underscores the value of integrating visual aids and problem solving in education, offering practical insights for teachers to create more dynamic classrooms. Nonetheless, factors like time constraints and resource availability warrant further exploration to ensure sustainable implementation in diverse educational settings.

This literature review examines the effectiveness of planning history learning based on the Problem Based Learning (PBL) model in developing students critical thinking skills. The study is motivated by the persistent dominance of teacher-centered instruction in history classes, which limits students analytical and reflective engagement with historical issues. This research aims to analyze how structured PBL, based lesson planning especially in designing problems, learning activities, media, and evaluation tools. Can enhance critical historical reasoning. Using a qualitative descriptive method through a review of journal articles, books, and research reports, the study finds that effective PBL planning requires identifying authentic historical problems, organizing collaborative inquiry activities, providing adequate scaffolding, and using critical thinking oriented evaluation rubrics. The results show that PBL consistently improves students’ analytical, evaluative, and interpretive abilities when supported by systematic planning and sufficient learning resources. The study implies that teachers must strengthen the planning phase, particularly in preparing learning scenarios and assessment instruments, to maximize the impact of PBL on critical thinking development.

This study aims to describe the implementation of the Problem Based Learning (PBL) model in teaching personal and official letter writing, and to examine its impact on improving the writing skills of Grade VII B students at SMP Negeri 2 Banjarmasin. The study is motivated by students’ difficulties in distinguishing the structure and language style of personal and official letters, as well as their low engagement in the learning process. This research employed a descriptive quantitative approach using a One Group Pretest-Posttest design. The instruments included writing tests (pre-test and post-test) and observation sheets to assess students’ activities and attitudes. The results indicate that PBL positively influences students' writing abilities. This is evidenced by a significant increase in the average post-test scores compared to the pre-test, along with improvements in critical thinking, collaboration, and independence. Students also demonstrated better understanding of the structural and linguistic features of both types of letters. Thus, the PBL model is recommended as an effective instructional strategy to enhance the quality of writing instruction, particularly within the framework of the Kurikulum Merdeka.

This study aims to determine the implementation and challenges  of the Promblem Based Learning (PBL) learning model and contextual approach to students. So, by knowing the results of the implementation, it is hoped that teachers can improve the way to teach students better. The method used in this study is descriptive qualitative with interviews via chat via whatsapp and provides google from to be filled in by Yuselvin Beo Wesso as a PPG student who teaches at SMP Negeri 6 Banjarmasin grade 8. She was chosen because she was a student of the Teacher Professional Program and also directly taught at school. The results obtained are the advantages and disadvantages of this model and approach. The advantage of this model is that it helps students to hone critical thinking skills through problem solving that can build students' connectivity with learning. The shortcoming faced in its application is that students find it difficult if they are directly asked for problem-solving discussions. In addition, the challenge faced is that teachers must be able to design learning that varies with the context of problem-solving and not all students can construct their experiences into written text. Therefore, efforts are made by applying the jigsaw method. The result of the application of this model and approach is that the students are quite good. Students can work together to complete assignments and be able to bring up topics relevant to daily life.

This study aims to analyze the influence of the Problem-Based Learning (PBL) model assisted by e-LKPD on students’ problem-solving abilities and self-confidence in vocational high schools. Specifically, the objectives are: (1) to examine the simultaneous effect of the PBL model assisted by e-LKPD on both variables, (2) to determine its effect on problem-solving ability, and (3) to evaluate its effect on self-confidence. A quantitative approach with a quasi-experimental pretest–posttest control group design was applied. The population consisted of all 10th-grade students at SMK Negeri 1 Tarakan, while the sample was selected using purposive sampling, resulting in class X Marketing 1 (35 students) as the experimental group and class X Culinary 2 (34 students) as the control group. Research instruments included a problem-solving test and a self-confidence questionnaire. Hypothesis testing utilized Hotelling’s T² and independent sample t-tests. The findings showed that 97% of students in the experimental class met the Learning Objectives Mastery (KKTP), compared to only 18% in the control group. Improvement in the experimental group was categorized as high, whereas in the control group it was moderate. Self-confidence also increased significantly in the experimental group, with most students moving from low to high categories. Hotelling’s Trace (Fcount = 77.109, p < 0.001) and t-tests confirmed significant effects on both problem-solving (tcount = 11.657) and self-confidence (tcount = 8.140), proving that the PBL model assisted by e-LKPD effectively enhances students’ abilities and confidence.

This study aims to improve student learning outcomes through the implementation of the Problem Based Learning (PBL) model assisted by PowerPoint media in Mathematics for Grade I students at SD IT Riyadhoturrohman. The research employs Classroom Action Research (CAR) conducted in two cycles. Each cycle consists of three meetings, following the stages of planning, implementation, observation, and reflection. The research subjects were 16 students from Grade I of SD IT Riyadhoturrohman. The Problem Based Learning model was chosen because it encouraged students to be actively involved in learning through solving contextual problems, while PowerPoint media was used to help visualize the mathematical concepts being taught. The results showed an improvement in students' learning outcomes from the pre-action stage to Cycle I, and a further increase in Cycle II. Additionally, students demonstrated improved participation, conceptual understanding, and teamwork skills. Thus, the implementation of the Problem Based Learning model assisted by PowerPoint media proved to be effective in improving the mathematics learning outcomes of Grade I students at SD IT Riyadhoturrohman.

Biology education in high school has an important role in shaping students' science literacy and critical thinking skills. However, ecological material, particularly the topic of Ecosystem Components and their Interactions, is often considered difficult because it is abstract and not easy to observe directly. This research aims to improve student learning outcomes through the application of the Problem Based Learning (PBL) model, which emphasizes real problem-solving, collaborative discussion, and active involvement in the learning process. The research uses the design of Classroom Action Research (PTK) which was carried out in two cycles in class X of St. Rosa de Lima Catholic High School Tondano involving 10 students in the odd semester of the 2025/2026 school year. Data was collected through observation of teacher and student activities, learning outcome tests in the form of pretests and posttests, and learning documentation. The analysis was carried out descriptively, qualitatively, and quantitatively by calculating the average score, percentage of completion, and student involvement. The results of the study showed a significant increase. The percentage of teacher activity increased from 58.3% in the first cycle to 87.5% in the second cycle, while student activity increased from 45.83% to 83.33%. The average score of students also increased from 70% in cycle I to 90% in cycle II, with classical completeness reaching 90%. These findings confirm the effectiveness of PBL as a contextual Biology learning strategy, able to bridge ecological concepts with real life, and increase students' curiosity, cooperation, and critical thinking skills.

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 the application of SSPBLS (Socio-Scientific Problem based Learning with Spiritual Value) on digestive system materials at SMA Muhammadiyah 1 Sragen for the academic year 2024/2025 and to find out whether this model can improve student learning outcomes. The type of research used is quantitative with experimental design. Data collection was carried out through learning outcome tests, observations, and interviews. Based on the results of the t-test, a significance value (sig.) of 0.22 was obtained, which was more than 0.05, which showed that there was no significant difference between the experimental group using the SSPBLS model and the control group using conventional learning methods. The results of this study show that the application of the SSPBLS model to the digestive system material in terms of final average scores can improve student learning outcomes. These results show that SSPBLS has the potential to improve student understanding through a problem-based approach that connects scientific phenomena with social issues, and its application in the field has met expectations. This research contributes to enriching contextual learning approaches through the application of the SSPBLS model which is proven to improve student learning outcomes by integrating social issues, critical thinking skills, and character values and provides alternative effective learning strategies to improve learning outcomes, with an emphasis on students' active involvement in solving problems based on social issues.

This study aims to analyze the influence of the Problem Based Learning (PBL) model in science education on students’ environmental literacy and science communication skills at SMK Negeri 3 Pekanbaru, focusing on the topic of disaster mitigation. The research employed a causal comparative approach with a post-test only design, comparing two student groups: an experimental class using the PBL model and a control class using conventional teaching. The results revealed a significant difference in environmental literacy, with the experimental class achieving a higher average score (81.86) compared to the control class (62.05). This indicates that the PBL model is effective in enhancing students' understanding, awareness, and environmentally responsible behavior. The PBL approach encourages active student engagement and the application of knowledge to real-world scenarios, which is particularly beneficial in the context of environmental issues and disaster mitigation. By working through problems related to environmental challenges, students are likely to gain a deeper understanding of the topic, which fosters a sense of responsibility towards environmental sustainability. In terms of science communication, although the experimental class showed a higher average score (75.78) than the control class (72.92), the difference was not statistically significant. This may be due to a lack of intensive training in scientific discussions and presentations. While PBL encourages collaborative problem-solving and idea-sharing, students may still require more structured practice in presenting and communicating their findings clearly and persuasively. The integration of more structured activities focusing on science communication skills could further enhance the effectiveness of the PBL model. Overall, the PBL model demonstrates positive potential in improving both environmental literacy and science communication. However, to achieve its full impact, its implementation must be consistent, with a focus on providing students with additional opportunities to develop their communication skills.

This study is motivated by the difficulty students face in understanding the concept of food chains, which is attributed to the conventional teaching methods still in use. Therefore, the researcher believes that the application of a new teaching model is expected to enhance student engagement in the teaching and learning process, ultimately improving learning outcomes. Natural Science is often considered difficult because of its many theories and the lack of variation in teaching methods, leading to poor student performance. Given these issues, an innovative teaching model is necessary. The aim of this study is to examine the impact of the Problem-Based Learning (PBL) model on students' knowledge in the Natural Science subject. The research method used is an experimental method with a quasi-experimental design. The study population consists of 50 fifth-grade students, with 25 students in the experimental group and 25 students in the control group. The hypothesis tested is that there is an effect of the Problem-Based Learning model on Natural Science learning outcomes. The results of the study show that the Problem-Based Learning model has a significant effect on students' knowledge. This is evidenced by the t-test results, which show a t-value of 12.400, greater than the t-table value of 2.01. Therefore, it can be concluded that the Problem-Based Learning model positively affects the understanding of food chain concepts in fifth-grade students. The findings of this study are expected to be beneficial for teachers in improving the quality of their teaching, for students to better understand the material through more engaging methods, and for the school environment in developing innovative and effective teaching practices.

This study aims to improve the critical thinking skills of fourth-grade elementary school students in understanding the concept of fractions through the application of the Problem Based Learning (PBL) model. The background of this study focuses on students' still low abilities in: (1) analyzing mathematical problems; (2) planning solution strategies; (3) drawing logical conclusions when working on fraction problems. This study uses the Classroom Action Research (CAR) design model Kemmis & McTaggart which was implemented at SD Negeri 2 Tahunan during the even semester of the 2024/2025 academic year. The research subjects consisted of 23 fourth-grade students who were selected purposively based on the results of the initial diagnosis. Data collection techniques were carried out by triangulation through: (1) formative evaluation tests; (2) participatory observation sheets; (3) learning video documentation; and (4) field notes. Data were analyzed quantitatively and qualitatively with a comparative descriptive approach. The results showed that the application of the PBL model was proven to be effective in improving: (1) students' critical thinking skills on average from 39.13 (low category) to 92.61 (very good category); (2) classical completeness from 8.7% to 91.3%; and (3) learning activities became more meaningful. Statistical analysis of paired sample t-test showed a significant difference (t=19.09; p<0.05) between before and after treatment. Other important findings include: (1) an increase in students' questioning skills by 78%; (2) an increase in the ability to provide arguments by 82%; (3) an increase in problem-solving skills by 85%. In addition, there was an increase in the following aspects: (1) group cooperation; (2) self-confidence; and (3) active involvement in class discussions.

Student learning independence can be stimulated by providing problems at the beginning of learning that must be solved. One example of a problem for teaching materials is the problem of students' polluted environment. Modules are one type of teaching material that can be designed systematically and used by students in the independent learning process. By applying a problem-based learning model to the environmental pollution learning module, it can be used as teaching material that trains students' learning independence by finding problems for the learning process and achieving learning objectives. This study aims to develop and determine the feasibility of a problem-based learning module on environmental pollution material for junior high school students in grade VII. The model used in developing the module is a model that has the steps of analysis, design, development, implementation, and evaluation (ADDIE). The module material is developed by first analyzing the needs of teaching materials, then continuing with analyzing the curriculum used and collecting materials from various sources. The module is then validated by a material expert who obtained a score of 90% and validation by a media expert who obtained a score of 92.5%. This module has also been tested on grade VII science teachers with a score of 96% and tested on students and obtained a score of 83%. Based on the validation and trial results, this module is included in the category of very suitable for use in learning.

This study aims to describe the influence of the Problem Based Learning (PBL) learning model on the learning outcomes of photosynthesis materials in grade IV elementary schools. The method used in this study is an experimental method with a quasi-experimental type. The design in the study is a non-equivalent control group design. The design of this study involves two classes, the experimental class, namely IV-B, is learning using the Problem Based Learning (PBL) learning model and the control class, namely class IV-C, is learning using the conventional learning model. The sample used was 54 students in grades IV-B and IV-C SD YPI Darussalam. The data collection technique uses a learning outcome test. Based on the results of the study in the Independent Sample T-test which showed a Sig. (2-tailed) value of 0.000 ≤ 0.05 which means less than 0.05, then H0 and Ha were accepted, which means that there is an influence of the Problem Based Learning (PBL) learning model on the learning outcomes of photosynthesis materials in grade IV elementary school.

This study aims to examine the effect of the Problem Based Learning (PBL) model in Physical Education learning for volleyball at SMK Candra Naya Jakarta. The research method used was an experiment with a One Group Pretest-Posttest design. The sample consisted of 39 eleventh-grade students selected using Cluster Random Sampling technique. The research instrument was a test of overhead and underhand passing skills in volleyball. The results showed that the average pretest score of 14.05 increased to 17.77 in the posttest, with hypothesis testing (Paired Samples Test) yielding tcount > ttable (9.833) and a significance of 0.000 (p < 0.05). This proves that the PBL model significantly improves students' volleyball passing skills. Additionally, PBL encourages active participation, teamwork, and critical thinking skills. Therefore, the PBL model can be an innovative alternative in Physical Education learning, particularly for volleyball.