This study was to determine the effect of the quiz team learning model on the thematic learning outcomes of sub-theme 3 of my parents' work in class IV SD Negeri 091281 Batu IV. This type of research used in this research is a quantitative experimental method with a one-group pretest-posttest research design. In this study, the population was all fourth-grade students at SD Negeri 091281 with a total of 38 people, and the research sample was group A with a total of 24 students. The sampling technique is purposive sampling. Data collection techniques in this study used the results of multiple-choice test questions. The data analysis technique used is the Normality Test and Hypothesis Test. The results of calculations using the paired sample test obtained tcount = 19.096 > ttable = 1.713. From these results, it can be seen that Ho is rejected, which means that using the quiz team learning model affects the thematic learning outcomes of class IV SD Negeri 091281 Batu IV.

The purpose of this study was to determine whether using the TPS learning model by using LKS can improve student learning outcomes in the material system linear equation two variable in class X Senior High Public School 2 of Pematangsiantar. The type of research used is classroom action research with 2 cycles. Subjects of class X-IPA 7. On the implementation of the first cycle of action, the result of the analysis of tests of students at the moderate (≥ 65) category in a classical manner were still not achived because only 52.78% of students were completed, with a grade average 65.00. After the implementation of the second cycle of action, the learning outcomes of students in the medium minimum category (≥ 65) have been achived classically, namely 86.11% with an average value 73.75. The increase in students' mathematics learning outcomes from cycle I to cycle II was 21.11%. Based on the result of the above research it can be concluded that the application of the TPS learning model using LKS can improve student learning outcomes.

This community service aims to improve English language skills for teachers and elementary school staff at SDN 104211. The method applied is the provision of materials and practice. This service uses a descriptive method with a qualitative approach. Which aims to describe learning the introduction of English. Collecting data using observation techniques, interviews, documentation with data collection tools, namely interview guides, observation guidelines, field notes, and documents. The research subjects were teachers and elementary school staff at SDN 104211. The results showed: (1) in planning language recognition learning there were themes, indicators, main activities, media adapted to students' needs (2) in implementation, teachers carried out language recognition learning English is in accordance with the lesson plans, (3) the supporting factors for learning English introduction are the availability of learning media for the introduction of English provided by institutions and teachers. (4) the inhibiting factor in learning the introduction of English is not the main language for children so that teachers must be creative in teaching; classroom teachers do not have sufficient knowledge of English; Child development is a consideration so that children are not depressed.

The purpose of this study was to determine the differences in the improvement of students' mathematical problem-solving abilities with the Contextual Teaching and Learning approach in the material of the two-variable linear equation system in class X SMA Negeri 2 Pematangsiantar. This study used an experimental method with the aim of being in accordance with the previous statement to determine the difference in students' mathematical problem-solving abilities with a contextual approach and an expository approach, with a randomized pretest-posttest control group design. The average increase in problem-solving abilities in the control class was 0.1688 while the increase in problem-solving abilities in the experimental class was 0.0085. By using the t-test (SPSS), with a value of Fcount = 10.907 and a significant level of 0.05, a significant probability is obtained 0.002 <0.05, it can be concluded that there is a difference in normalized gain or an increase in problem-solving ability with conventional and contextual approaches. Based on the average gain of the control and experimental classes, the increase in the control class using the conventional approach is higher than the experimental class with the contextual approach. The difference in increasing problem-solving abilities in conventional classrooms is possible due to differences in students' entry-level abilities, which can be seen in the average pretest of each class.