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This community service is in the form of delivering material exposure to the Implementation of 4C in the 21st Century Era in Integrative Thematic Learning to Teachers of SD Mojosongo III Surakarta. Community service by presenting teachers, school principals and in material presentation and interactive question and answer events to the level of mastery of SD Mojosongo III Surakarta teachers regarding the Implementation of 4C in the 21st Century Era in Integrative Thematic Learning for SD Mojosongo III Surakarta Teachers is intended to be able understand the essence of 4C in learning to support the smoothness of the learning process as well as theoretical clarity and a better understanding of learning, learning objects and learning situations and conditions in elementary schools. The delivery of this material to all teachers at SD Mojosongo III Surakarta, school principals and school supervisors totaling 25 teachers, both classroom and sports teachers, religion teachers and art teachers from parallel classes at the school. With the hope of teachers in the learning process in the classroom so that aspects of teacher knowledge and skills can further improve the abilities and professionalism of primary school teachers. Providing a scientific basis for elementary school teachers in understanding the essence of 4C Implementation in the 21st Century Era in Integrative Thematic Learning which consists of Communication, Collaboration, Critical Thinking and Creativity, and provide theoretical clarity and understanding better about learning, learning objects and learning situations and conditions in Primary Schools. The implementation will be held on Monday, July 15 2020 in the SD Mojosongo III Surakarta classroom with a 6 hour implementation time pattern, starting at 8.00 WIB until 15.00 WIB. The objectives of this community service are (1). Provide a scientific basis for elementary school teachers in understanding learning in the 21st Century Era in Integrative Thematic Learning (2). Provide theoretical clarity and better understanding of 4C communication, collaboration, critical thinking, creativity in learning in the 21st Century Era Keywords: 4C in the 21st century, communication, collaboration, critical thinking,

The purpose of this study was to identify Vertebrate animals of the Mammal class, order artiodactyla, family Cervidae in the Jurug Surakarta taru Animal Park, develop interactive video media as a result of identification of vetebrata animals into learning media, know the quality of interactive video media based on assessment by material experts, media experts and biology teachers, and applications in learning. The research method uses an observation method by making direct observations of vertebrate species. The instrument for assessing the quality of interactive video media is based on material aspects and presentation aspects, with a qualitative descriptive analysis design. The results of this study indicate that in Taru Jurug Animal Park Surakarta there are 3 species of animals namely Cervus unicolor, Cervus timorensis, Axis-axis and all three have been identified. Research on the identification of vertebrate animals, especially the mammalian class, order artiodactyla, and the cervidae family can be used for the preparation of interactive video media with material on Biodiversity at the level of genes and species. The quality of interactive video media in terms of material aspects, presentation, and language. Assessment of material experts obtained a percentage of 90.9% so that it was categorized as very valid, media experts obtained a percentage of 88.5% so it was categorized as very valid, biology teacher Veteran 1 Sukoharjo High School obtained a percentage of 92.5% so it was categorized as very valid and biology teacher Nguter 1 Public High School obtained a percentage of 97.5% so it is categorized as very valid. Based on this, it can be concluded that this interactive video media is worthy of being used by teachers as one of the learning media about Biodiversity at the level of genes and species.

The purpose of the research was to find out the level of the students' problem solving skills on environmental material at X class of MAN Bintan. The researcher applied descriptive quantitative approach as method for analyzing the data. Sampling in this study using Total Sampling technique with the sampel consisted of 59 students. This instrument is used to collect students' problem solving skills through six aspects to Chang & Kelly with 6 items essay and feature interviews. The data were analyzed with statistical rule in percentage. Based on the results of data analyze shows that a 77% rate highly classified. The researcher concluded that student at X class MAN Bintan has good problem solving skills. However, it still needs training and guidance to develop problem solving skills.

Classification is one of the most widely used techniques in machine learning. Text classification is the process of classifying data according to pre-determined groups or classes. Where in most cases, text classification uses labeled training data to obtain the rules used to classify test data into predefined groups. In this study, it is proposed to use CountVectorizer for Indonesian text classification which will be compared with TF-IDF Term Weighting and its three feature levels, namely Character Level, Word Level and N-gram Level as feature extraction which is implemented together with Naive Bayes classification and the BPPPTIndToEngCorpusHalfM dataset. To compare the classification performance, this study uses 10-Fold Cross Validation and Split Data using a ratio of 90:10, while to evaluate the accuracy of the authors using the F1-Score and AUC with the hope that this study will get good accuracy results so that it can be used as a reference to be developed using another method. The F1-Score accuracy obtained in this study was 0.93 and the AUC score was 0.95.

Background: Improving the quality of life of Indonesian people can be done through educational efforts both at school and outside of school. The School Health Business (UKS) is a basic health business aimed at schools and is the duty of the public health center to achieve health and improve learning achievement of school children). One of the functions of the UKS is as a forum for providing early health education especially for school children. Method: Before the implementation of the activity, the number of students involved amounted to 40 people, while the selection of students based on grade 8 and grade 9 would be selected again after getting extension activities and transforming as a UKS cadre. Activity Methods Used (1) Lecture and Demonstration Methods to discuss General Knowledge about School Health Enterprises (UKS), the role and participation of students in UKS activities, Efforts to Encourage, (2) Learning Methods Used to Transfer Assistance or Skills from the Value System Owned resource person to students. As a guest speaker providing health examination exercises for special UKS cadre students consisting of general physical examination and vital signs (blood pressure, temperature, pulse and breathing). Results: The results of the data collection obtained for SMP did not have its own UKS room ,but it was still combined with the primary school room which was still in the same building. Schools do not have UKS cadres and have never done UKS program activities. The level of student knowledge related to UKS is also very low. Conclusion: the level of student knowledge after counseling was found as many as 36 (86%) people have good knowledge and 6 people (14%) have enough knowledge. This shows that the provision of counseling and training can increase student knowledge. Suggestions, for SatyaSai Junior High School and Denut 3 Public Health Center to make a policy about the importance of UKS and to continue the program to have UKS space and to form a UKS structure so that good student behavior is formed to increase PHBS in schools and to follow up