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This research is motivated by challenges in biology learning, including the lack of digital literacy assessment in schools and the use of conventional learning methods that tend to make students bored. Impractical printed teaching materials cannot be integrated into the form of videos. This research aims to develop an e-module based on Science, Technology, Engineering, and Mathematics (STEM) to analyze the feasibility, practicality, and effectiveness of e-modules in improving students' understanding of concepts and digital literacy on human respiratory system materials. This research uses the Development Research (R&D) method with the ADDIE (Analysis, Design, Development, Implementation, Evaluation) development model.  The research was carried out at SMAN 1 Malinau. The implementation stage used a non-equivalent control group  design involving 34 students in the experimental class and the control class. Data collection instruments include validation sheets for media and material experts, practicality questionnaires for teachers and students, and pretest-posttest  tests to measure concept understanding and digital literacy.  Analysis of effectiveness data using N-gain test and hypothesis test (independent sample t-test for concept understanding and Mann-Whitney for digital literacy). The results of the research based on the validation of media experts and subject matter experts show that the STEM-based e-module is declared "Excellent". The e-module is also rated "Very Practical" by biology teachers and students. The e-module was shown to be effective in improving conceptual understanding, where the average N-gain value of the experimental class (58.63; Quite Effective category) was significantly higher (p=0.017) than that of the control class (40.62).

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 determine the effect of the mathematical puzzle playing method on the subtraction calculation ability of first-grade students of SDN 104202 Bandar Setia. The type of research used is a quasi-experiment with a pretest-posttest control group design. The research subjects consisted of two classes, namely class IA as the control class (22 students) and class IC as the experimental class (22 students). The research instrument was a subtraction calculation ability test that has been tested for validity and reliability. The results showed that the average posttest score of both classes was 78.86 in the control class and 84.77 in the experimental class where there was a significant difference. The independent t-test of both classes showed a significance value of 0.000 < 0.05, so the hypothesis H0 was rejected and H1 was accepted. Thus, it can be concluded that the mathematical puzzle method significantly improved the arithmetic and subtraction skills of first-grade students at SDN 104202 Bandar Setia.

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.

This study aims to describe the application of the Game Based Learning (GBL) model in improving the learning outcomes of slow learner students in Mathematics in elementary schools. The background of this study is the low learning outcomes of Mathematics in students with special learning needs, especially slow learners, who often have difficulty understanding abstract concepts and are less motivated to learn. The GBL model was chosen because it can provide a fun, interactive learning atmosphere and motivate students to be more actively involved in the learning process. The research method used is Classroom Action Research (CAR) which is carried out in two cycles with the stages of planning, action implementation, observation, and reflection. The subjects of this study were fifth grade students of SDN 002 Kombeng who were identified as slow learners. The results of the study indicate that the application of the Game Based Learning model can improve the learning outcomes of slow learner students. This is indicated by an increase in the average value of learning outcomes in each cycle and an increase in student activity and motivation to learn. Thus, the Game Based Learning model can be an alternative effective learning strategy to help slow learner students understand Mathematics concepts in a fun and meaningful way.

The objectives of this Community Service Program are: (1) To introduce the concept of ethnomathematics to students and classroom teachers at UPT SDN 1 Rantepao as a contextual learning approach rooted in local culture, particularly the traditions of the Toraja ethnic group; (2) To enhance students’ understanding and interest in mathematics through the integration of mathematical elements found in Torajan cultural motifs, artifacts, and symbols, such as symmetry, geometric shapes, patterns, and measurement; and (3) To support teachers in developing innovative and meaningful mathematics instruction by connecting mathematical content to real-life contexts that are relevant to students' daily experiences. The program was implemented in five stages: preliminary observation and survey, preparation, implementation, group discussion and reflection, and the final stage—evaluation. Based on the results of the program, the introduction of ethnomathematics based on Torajan local culture successfully contributed to improving students’ mathematical understanding and reinforcing the relevance of mathematics instruction within the local cultural context. The three-day implementation of the program was met with highly positive responses from all school stakeholders, including strong student enthusiasm, active teacher participation, and noticeable changes in instructional practices. Evaluation outcomes demonstrated a significant improvement in student understanding, as reflected by an increase in the average quiz score from 55 to 83. Moreover, the program contributed to social transformation within the school environment, including the formation of culturally based student learning groups, positive shifts in student learning behaviors, the emergence of local student leadership, and increased awareness among both students and teachers of the importance of integrating local cultural values into the learning process.

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 investigates the use of MATLAK (Mathematics Through Congklak) media in improving mathematics learning for class 5C students at SDN 067240 Medan Tembung. The objectives are to: (1) describe the application of MATLAK in the classroom, (2) determine its impact on students' mathematics learning outcomes, (3) analyze its effect on student motivation and engagement, and (4) assess the effectiveness of the traditional congklak game as a learning tool. Conducted as Classroom Action Research (CAR), this study aims to address classroom learning challenges through reflective cycles that enhance both teaching processes and student outcomes. The findings reveal that the integration of the Problem-Based Learning (PBL) model with MATLAK media, rooted in constructivist principles, significantly increased student activity and understanding, especially when problems presented were closely related to daily life. Students were encouraged to collaborate, think critically, and articulate their ideas during discussions. Additionally, student responses toward the use of MATLAK media were overwhelmingly positive, demonstrating increased motivation and active participation. Teacher observations also showed improvement in classroom engagement and implementation effectiveness from cycle I to cycle II. Overall, the study concludes that using the traditional congklak game as a mathematics learning medium when combined with the PBL model effectively enhances learning outcomes and student involvement in class 5C.

This study aims to determine the effect of the application of multiplication board media in mathematics learning on students' understanding of multiplication concepts in grade IV of elementary school. This study uses a qualitative approach with a descriptive method conducted in several elementary schools. Data were collected through observation, interviews with teachers and students, and documentation of learning activities. The results of the study indicate that the use of multiplication board media can improve students' understanding of multiplication concepts. Students who initially had difficulty memorizing multiplication tables showed significant progress after using this media, as seen from their ability to work on multiplication problems faster and more accurately. In addition, the use of this media also increased student involvement and motivation in learning. Teachers reported that the multiplication board media made it easier for them to explain multiplication concepts in a more concrete and visual way, and increased student participation in class. Based on these results, it can be concluded that the application of multiplication board media in mathematics learning can be an effective alternative to improve students' understanding of multiplication material. This media not only makes mathematics learning more interesting, but also strengthens the basic concepts of mathematics taught in elementary school.