This study aims to identify and analyze language errors in the Discrete Mathematics book, which may affect the clarity and comprehension of the presented material. The analysis focuses on capitalization, punctuation, word usage, and sentence structure. The research employs a qualitative descriptive method with a literature study approach. Data were collected through in-depth reading and recording of linguistic errors found in the book's text. The results indicate that errors such as improper capitalization, punctuation mistakes, inaccurate word choices, and ineffective sentence structures can hinder the understanding of discrete mathematics concepts. Therefore, linguistic improvements are necessary to enhance the book's effectiveness and quality as a teaching material. These revisions are also expected to increase the book’s academic credibility as a reference for students and scholars.

This research aims to explore effective communication in Physical Education, Health and Recreation learning, with a focus on the role of Indonesian as an essential language of instruction. The method used was a questionnaire distributed to several Medan State University students to collect data regarding their perceptions regarding the clarity of instructions, understanding of the material, and its impact on learning motivation. The questionnaire consists of 20 questions to measure students' level of agreement with various aspects of communication in learning. The results of data analysis showed that 96.5% of respondents felt that clear and effective communication from teachers greatly contributed to understanding the subject matter and significantly increased their motivation in attending class. These findings confirm that good and correct use of Indonesian is very important in creating a more interactive and effective learning environment in the fields of Physical Education, Health and Recreation. It is hoped that this research can provide insight for teachers and educators about the importance of communication strategies in improving the quality of learning.

This research aims to identify barriers to the use of Indonesian in the learning process in the Physical Education, Health and Recreation study program. To measure perceptions and experiences regarding the use of Indonesian in learning, especially in understanding technical content, providing teaching, and communicating between students. This research uses a quantitative approach method by distributing questionnaires to third semester students. The research results show that the majority of respondents think that using Indonesian is effective in understanding basic concepts, but it is difficult to understand technical terms in foreign languages. In addition, misunderstandings often occur between instructors and students, especially in teaching practice environments. Another barrier identified was the lack of specific vocabulary in Indonesian to explain complex concepts in the fields of sport and health. The results of this research indicate that there is a need to adopt terminology in Indonesian that is easier to understand and improve instructors' abilities in creating teaching materials in language that is easier to understand.

This study aims to analyze the implementation of Indonesian language in teaching Physical Education and its impact on the effectiveness of learning in students of the Physical Education, Health, and Recreation Study Program. The use of Indonesian language as a medium of instruction is expected to improve students' understanding of concepts, involvement, and active participation in academic activities. This study collected data through observations and questionnaires distributed to third-semester students. The results of the study indicate that the effective use of Indonesian language in teaching physical education, health, and recreation contributes positively to students' understanding of the material, increases involvement in class discussions, and facilitates better communication between lecturers and students. These findings provide important insights for the development of teaching strategies at the higher education level, especially to improve the quality of learning in the field of Physical Education.
 
 

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.

This research discusses the role of the Indonesian language in supporting Indonesia's national development and the challenges faced in preserving and developing it in the era of globalization and modernization. The study employs a literature review approach to analyze the role of the Indonesian language in nation-building. The formulation of the problem includes the role of the Indonesian language in nation-building, challenges in preserving and developing this role, and strategies to strengthen the role of the Indonesian language in the digital era. The results indicate that the Indonesian language plays a crucial role in unifying the nation and enhancing national development. However, challenges such as globalization and modernization pose threats to the purity and sustainability of the Indonesian language. Therefore, increasing understanding and affection for the Indonesian language among the public need to be enhanced through formal education and the development of strategies that adapt to technological advancements and the times.