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This research aims to produce an LKPD product with a realistic mathematical approach that is valid, practical and effective for improving students' mathematical communication skills. This research and development is based on the stages of the 4D development model by Thiagarajan which was adapted to 3D including the definition, design and development stages. The subjects in this research were the X-Mipa 1 class of SMAN 2 Kabanjahe, totaling 30 people. Based on the research conducted, the validity of the LKPD obtained an average assessment of 89.47% by material experts and 88.15% by media experts with very valid qualifications. Through a questionnaire on the practicality of LKPD by teachers and students, an average of 90.27% was obtained by teachers and 92.12% by students with very practical qualifications. The implementation of learning by applying LKPD with RME was carried out to see the effectiveness of LKPD in obtaining results, namely achieving classical learning completeness. 86.67%, achievement of learning objectives was achieved in questions 1,2,3,4 and 5 and achievement of efficient learning time, from the effectiveness assessment reference, the LKPD developed was classified as effective. The increase in mathematical communication skills that occurred was an increase in the moderate category with an average gain score of 0.632. Based on the data obtained, it was concluded that the LKPD with RME that was developed met the qualifications of being valid, practical and effective.

This research was motivated by all teachers in MI Kalifa Nusantara have met academic qualification standards. However, it seems that the teacher’s academic qualifications have not been able to maximize the student’s learning achievement. This is evidenced by a decrease in learning achievement. The purpose of this research is to know qualifications teachers in improving student learning achievement and the inhibitory and supporting factors faced by teachers in improving student learning achievement at MI Kalifa Nusantara Years lesson 2019/2020. This study uses a qualitative approach, with a qualitative interpretive method. Determination of the informant was done by purposive sampling. The data collection techniques was by observation, interviews, and documentation. The results of the study revealed that, the role of teacher qualifications is improving learning achievement is determined by academic and non-academic qualifications, learning planning qualifications, learning process qualifications, personality qualifications, and learning process results through evaluation. While the supporting factors of learning achievement internally are student intelligence, internal motivation, as well as interests and talents. The external support factors are parental motivation, adequate facilities, out-of-school tutoring, and teacher rewarding. The inhibitory factor of learning achievement consists of internal factors, namely lack of motivation and interest in learning. Meanwhile, the external factor is the lack of attention from parents, students not taking additional lessons outside of school, and less supportive facilities.  

This research was motivated by all teachers in MI Kalifa Nusantara have met academic qualification standards. However, it seems that the teacher’s academic qualifications have not been able to maximize the student’s learning achievement. This is evidenced by a decrease in learning achievement. The purpose of this research is to know qualifications teachers in improving student learning achievement and the inhibitory and supporting factors faced by teachers in improving student learning achievement at MI Kalifa Nusantara Years lesson 2019/2020. This study uses a qualitative approach, with a qualitative interpretive method. Determination of the informant was done by purposive sampling. The data collection techniques was by observation, interviews, and documentation. The results of the study revealed that, the role of teacher qualifications is improving learning achievement is determined by academic and non-academic qualifications, learning planning qualifications, learning process qualifications, personality qualifications, and learning process results through evaluation. While the supporting factors of learning achievement internally are student intelligence, internal motivation, as well as interests and talents. The external support factors are parental motivation, adequate facilities, out-of-school tutoring, and teacher rewarding. The inhibitory factor of learning achievement consists of internal factors, namely lack of motivation and interest in learning. Meanwhile, the external factor is the lack of attention from parents, students not taking additional lessons outside of school, and less supportive facilities.

This research was motivated by all teachers in SMP Tawakkal Denpasarhave met academic qualification standards. However, it seems that the teacher‟s academic qualifications have not been able to maximize the student‟s learning achievement. This is evidenced by a decrease in learning achievement. The purpose of this research is to know qualifications teachers in improving student learning achievement and the inhibitory and supporting factors faced by teachers in improving student learning achievement at SMP Tawakkal DenpasarYears lesson 2019/2020. This study uses a qualitative approach, with a qualitative interpretive method. Determination of the informant was done by purposive sampling. The data collection techniques was by observation, interviews, and documentation. The results of the study revealed that, the role of teacher qualifications is improving learning achievement is determined by academic and non-academic qualifications, learning planning qualifications, learning process qualifications, personality qualifications, and learning process results through evaluation. While the supporting factors of learning achievement internally are student intelligence, internal motivation, as well as interests and talents. The external support factors are parental motivation, adequate facilities, out-of-school tutoring, and teacher rewarding. The inhibitory factor of learning achievement consists of internal factors, namely lack of motivation and interest in learning. Meanwhile, the external factor is the lack of attention from parents, students not taking additional lessons outside of school, and less supportive facilities.