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This article discusses the application of the Classroom Action Research (PTK) method with the Problem Based Learning (PBL) learning model to improve learning outcomes in measurement material in elementary schools. The PTK method is an effective approach in identifying learning problems, formulating solutions, and testing their effectiveness directly in the classroom. The PBL model, as a student-centered learning approach, has been proven effective in improving student learning outcomes in measurement material in elementary schools. In the context of measurement, the application of the PBL model is expected to strengthen students' understanding of basic measurement concepts, such as units of measurement, measuring tools, and their application in the context of everyday life. PBL offers a student-centered learning approach, which not only helps students understand mathematical concepts, but also encourages active involvement, problem solving, and the development of critical thinking skills.

The main problem in this research is the lack of short story writing skills in class V students at SD Inpres Kampung Parang, Eremerasa District, Bantaeng Regency. So the researchers used Bolding media (rolling balls). This research aims to determine the effectiveness of Bolding media (rolling balls) on the short story writing skills of class V students at SD Inpres Kampung Parang, Eremerasa District, Bantaeng Regency. The type of research used is an experiment in the form of Pre-Experimental Design. The data source in this research was 15 class V students at SD Inpres Kampung Parang, Eremerasa District, Bantaeng Regency. Data collection was carried out using the results of the assessment of short story writing skills. The data obtained was then analyzed using statistical analysis techniques, namely descriptive statistics and inferential statistics. After analyzing the data, researchers found that student learning outcomes before using Bolding (rolling ball) learning media were relatively low, namely the average score of the Pre-test results was 58 .33, then the average value of the Post-test results is 85.67. After obtaining tCount 9.223 and tTable 2.14479, we get tCount > tTable or 9.223>2.14479. Based on the results of tCount and tTable, it can be said that H0 is rejected and H1 is accepted. This means that the use of Bolding (rolling ball) learning media is effective on short story writing skills for class V elementary school. Presidential Instruction for Parang Village, Eremerasa District, Bantaeng Regency.

This research aims to determine the effect of the Problem Based Learning (PBL) learning model on social studies learning outcomes for Class V Elementary School in Gugus Sumberarum, Kapanewon Moyudan, Sleman Regency. This research is pre-experimental research, with a quasi experimental research design. The population in this study consisted of VA and VB classes with 52 students. Sampling used the Simple Random Sampling technique to select the VA class with 20 students as the experimental class and the VB class with 20 students as the control class. The test instrument used is a learning outcomes test. Data is described and analyzed using descriptive statistics and inferential statistics. The results of the research show that the value of learning outcomes before implementing the Problem Based Learning (PBL) learning model based on Tri Nga teachings obtained an average value of 67.6. After implementing the Problem Based Learning (PBL) learning model based on Tri Nga teachings, the average score rose to 85.35. The results of the significance test obtained a Sig value. (2-tailed), namely 0.00 < 0.05, it can be said that there is a significant difference between the control class and the experimental class, so it can be said that H0 is rejected and H1 is accepted. Based on these results, it can be said that there is a positive influence of the application of the Problem Based Learning (PBL) learning model based on Tri Nga teachings on social studies learning outcomes in class V elementary school in Gugus Sumberarum

The researchers found problems in grade 5 at SD Jam'iiyatul Hujjaj Bukittinggi, namely students' difficulties in understanding Arabic vocabulary. To increase students' understanding of Arabic vocabulary, the researcher applied the question-and-answer method through picture media. The purpose of this study is to determine the effectiveness of using the question and answer method through picture media to increase Arabic vocabulary and to find out the increase in Arabic vocabulary mastery after using the question and answer method through picture media at SD Jam'iiyatul Hujjaj Bukittinggi.This study used quantitative research with a group pretest-posttest design. Researchers took samples in this research experimental class of 28 students and control class of 28 students.The tools used for collecting data were observation, examination, and documentation. and student learning outcomes using the question-and-answer method through media images of 5th grade elementary school students. Based on the acquisition of an average value of 83, This is also proven through the calculation of "T." Calculate more than the "T" Table, namely 2,463.Then H0 is rejected and Ha is accepted. So it can be concluded about the effectiveness of the use of the question and answer method through picture media for students in grade 5 at SD Jam'iiyatul Hujjaj Bukittinggi.

He background of this research is the low learning outcomes of students in class III at SDN Ngijo 01 Gunungpati District, Semarang City, because the learning process is still centered on the teacher who still follows the habit in the order that begins with the teacher directly explaining the material, then evaluates students through practice. The expected goal in this study is to improve student learning outcomes in learning with the Problem Based Learning model. This type of research is Classroom Action Research which is focused on action as an effort to improve student learning outcomes by using the Problem Based Learning learning model for class III students at SDN Ngijo 01 Gunungpati District, Semarang City. This research consists of 5 cycles. Each of these cycles includes the stages of planning, implementing, observing and reflecting. The research subjects were class III SDN Ngijo 01 Semarang, totaling 21 students consisting of 10 male students and 11 female students. Data collection methods in this study are tests and observations. The research instruments used in this study were test questions and observation sheets. Data on learning outcomes tests were analyzed in a quantitative descriptive manner and the data in the form of observations were analyzed in a qualitative descriptive manner. The success criteria achieved by students and teachers in this study were seen from changes towards improvement and increasing student learning outcomes. The results of classroom action research carried out by the author in five cycles resulted in an increase in students' learning completeness. This can be seen from the percentage of students who pre-action achieved 38% classical mastery level, namely 8 out of 21 students. From the first cycle of students who completed only 12 or 57% of students' completeness, the second cycle had 62% classical completeness, the third cycle had 71% classical completeness, the fourth cycle had 86% classical completeness, the V cycle had 90% classical completeness. Due to the increase in student learning outcomes from having met the target of 85% so that the cycle ends in cycle V. Students show activeness in the learning process and students also understand more because they have direct learning experiences using the Problem Based Learning learning model. This proves that the Problem Based Learning learning model is able to improve student learning outcomes.

This study aims to improve the learning outcomes of class I students at SDN Ngijo 01 Semarang in the material form of shapes using smart board media. This type of research is Classroom Action Research. This research consists of 5 cycles. Each of these cycles includes the stages of planning, implementing, observing and reflecting. The research subjects were class I SDN Ngijo 01 Semarang, totaling 28 students consisting of 10 male students and 18 female students. Data collection methods in this study are tests and observations. The research instruments used in this study were test questions and observation sheets. The data analysis technique used in this study is a qualitative descriptive technique with percentages. The success criteria achieved by students and teachers in this study were seen from changes towards improvement and increasing student learning outcomes. The results of the study show that the use of smart board media is able to improve student learning outcomes in the shape material. This can be seen from the percentage of students' pre-action scores that achieved 39.3% classical mastery level, namely 11 out of 28 participants. In cycle I 64% completeness classical, cycle II 68% completeness classical, cycle III 71% completeness classical, cycle IV 75% completeness classical, cycle V 89% completeness classical. Due to the increase in student learning outcomes from having met the target of 85% so that the cycle ends in cycle V. Students show activeness in the learning process and students also understand more because they have direct learning experiences using smart board media.