This research aims to analyze the increase in HIV/AIDS cases in Medan City with a focus on influencing factors and implications for prevention and education. The research method used is library study, by collecting and analyzing data from literature, documents and related reports from various sources, including scientific journals, books and official reports from health and government organizations. The results of the analysis show that factors such as risky behavior, low levels of public awareness, lack of access to health services, and social stigma have a significant role in increasing HIV/AIDS cases. The implication of these findings is the need to increase efforts in prevention and education, with a focus on increasing awareness, reducing stigma, increasing accessibility of health services, and strengthening collaboration between various stakeholders in addressing this problem. This research makes an important contribution to understanding the dynamics of HIV/AIDS epidemiology in Medan City and provides a basis for developing more effective intervention strategies.
 
 

This research aims to explore the role of chemistry in daily life from the perspective of female students (santri puteri) at Al-Ihsan Islamic Boarding School in Banjarmasin. Through qualitative methods including interviews and observations, this study investigates the understanding, perceptions, and experiences of the students regarding the practical applications of chemistry in their everyday lives. The findings highlight the significance of integrating chemistry education with real-life contexts to enhance students' comprehension and appreciation of this scientific discipline. Understanding the perspectives of female students in Islamic boarding schools sheds light on how chemistry education can be tailored to meet the needs and interests of diverse learner populations.

Vehicle testing in this research was carried out in the Practical Work Lecture program at the North Sumatra State Islamic University, MedanOne type of service provided is motor vehicle testing. Motor vehicle testing is very important to carry out for the safety of the driving public. When testing motorized vehicles, not only one vehicle will be tested, but many vehicles will be tested every day. The testing carried out will of course take quite a long time. Therefore, this research will use a queuing theory system, where this queue will be formed and help in managing and optimizing performance in motor vehicle testing. In this research, we will lokk at the service time and waiting time required for motor vehicle testing. The method used in this research is data taken in 2022. The data was processed using Microsoft Ecxel with service time results of 15,8 and waiting time of 57,05.
 
 

The drill method is serious repetitive activities do the same thing to strengthen or hone skills and make it permanent. The aim of this research is 1) To find out how to apply the drill method in mathematics lessons in class 4 at SDN 039 Air Terbit, 2) To find out whether the drill method is able to overcome students’ difficulties in understanding mathematics lessons, 3) To increase students’ learning motivation by applying the drill method in mathematics lessons in class 4 at SDN 039 Air Terbit. The method in this research uses classroom action research.. PTK is an approach to improving education through change by encouraging teachers to think about ttheir own practice so that they are critical of these actors an teachers want to change them. The results of this research are that students’ learning motivation is increasing. This can be seen from the results of the initial test. Learning engagement increased from 30% to 45% at the end of cycle 1 test and increased again at the end of cycle 2 test to 80%.  So from the test result above it can be concluded that learning using the drill method can increase students’ learning motivation in mathematics lessons, the material on operations for calculating fractions can be seen from the increased learning result, so student motivation also increases.

Students who have academic difficulties are a sign that something is wrong. These errors can be in the form of conceptual misunderstandings, errors in forgetting the solution procedure, or careless errors. Therefore, the purpose of this study was to determine the cognitive barriers that elementary school students must overcome to understand the concept of speed and discharge. The methodology used in this study was qualitative. A literature search revealed that poor cognitive development of students, who are often at the concrete operational stage, is the main cause of these obstacles. Additional obstacles noted include proportionality challenges, limited abstraction and imagery capacity, and learning strategies that do not help the process of understanding the topic effectively.

The purpose of this research is to find out about students' mathematical abilities and proofs when learning mathematics at the tertiary level. In this research, researchers used quantitative methods in the form of literature reviews or literature reviews, namely this research took data sources from books, journals and previous research that had been carried out. Apart from that, it is also based on the results of the researcher's analysis, where this theoretical reference can be used as a strong basis for understanding students' mathematical proof abilities. Based on the research results obtained by researchers, it is that students' mathematical proof abilities are not optimal, and based on the research results, the percentage of mathematical proof abilities obtained is less than optimal. The majority of students still have difficulty working on proof questions. This is due to various factors, one of which is that understanding of integers and their definitions and properties is still low.
 
 

This research aims to determine the role of good use of Indonesian in the learning process for students, especially in mathematics set material. Apart from that, this research also aims to reveal various theories that are relevant to the problem being researched, and is carried out by re-analyzing data that has been collected from other research results in order to prove the correctness of the data and its validity based on the title of the research. The scope of this research is to measure students' understanding using good Indonesian regarding understanding elements in mathematical set material. The research method used is quantitative research. From the research that has been carried out, it can be seen that every reference used in this research states that the use of Indonesian plays a very important role in the learning process for students.

The research comprised multiple simulated tests to determine the relationship between (sample size, distribution parameter value, estimation method, and pollution indivuduales). The experimental findings indicate that the estimator is influenced by sample size, the value of distribution parameter, estimation method, and pollution indivuduales. The results of the mean square error analysis indicate that (robust estimation method) produces the best results with the lowest mean square error, and the best estimation method was (191) of (243) simulation experiments. Additional statistical distributions with additional factors can be performed to demonstrate additional results.

The importance of computational thinking skills has encouraged educational institutions around the world to integrate these concepts into their curricula. However, the challenge faced is finding the most effective learning methods and models to teach these skills. An appropriate learning model must not only be able to attract students' interest and motivation, but must also be able to increase their understanding and practical abilities in computational thinking. This research adopts a literature review method to explore information about effective learning models in improving students' computational thinking skills. Data was collected from various sources such as national and international journals, reference books, newspapers and magazines. The main aim of this literature review, as explained. The results of research on Problem Based Learning (PBL) and Project Based Learning show very positive results in improving students' computational thinking. These two models not only improve computational thinking skills, but also critical, creative and analytical thinking skills, as well as student participation and involvement in the learning process.

From this research, the researcher wants to further develop learning media that uses game media so that it attracts more interest from students at SD Aisyah Surabaya. This research method is qualitative research with a descriptive approach. Data source sampling was carried out purposively in grades 4, 5 and 6. This research aims to (1) describe the use of Multiplication House media at Aisyah Elementary School in Surabaya, (2) describe how interested grade 4, 5 and 6 students are in Rumah Multiplication media. Multiplication, (3) describes the obstacles to using Multiplication House media, (4) describes solutions to overcome obstacles experienced by students. The results of the research show the following: (1) the use of the Multiplication House media can attract students' interest in learning mathematics, especially multiplication and provide assistance to students in memorizing multiplication in a fun way, (2) The obstacle to using the Multiplication House media is that students have not yet mastered multiplication. and the use of pawns made of pine so it is less safe, and (3) The solution to the problem of using Multiplication House media is that the role of teachers and parents is needed in guiding students to memorize multiplication and replace pawns with safer media. The conclusion that can be drawn is that the multiplication house media can motivate students to memorize multiplication.