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With the increasing development of technology the more variety of books circulating on the internet. As is the recommendation system on online book sites that provide books relevantly and as needed with one's preferences. One alternative is GoodReads, a social networking site that specializes in cataloging books and users can share reading book recommendations with each other by rating, reviewing, and commenting. As a large book recommendation site, it has a lot of data that can be processed by applying machine learning methods, but still not known as the most accurate model. By using the right model, we can provide more accurate recommendations. Therefore, this study will analyze the data obtained from the www.kaggle.com namely the goodreads-books dataset. This study proposed a data mining classification model to get the best model in recommending books on GoodReads. The algorithms used are Decision Tree, K-Nearest Neighbor, Naïve Bayes, Random Forest, and Support Vector Classifier, then for model evaluation using accuracy, precision, recall, f1-score, confusion matrix, AUC, and Mean Error Absolute. The test results of several classification algorithms found that Decision Tree has the highest accuracy among the methods presented by 99.95%, precision by 100%, recall by 96%, f1-score of 98% with MAE of 0.05 and AUC of 99.96%. This is proof that decision tree algorithms can be used as book recommendations based on book categories on GoodReads.

The problems experienced by young women in facing online learning adjustments during the Covid-19 pandemic at the Aisyah Kadipiro orphanage have the potential for stress for adolescents. The existence of a source of stress or stressors that trigger stress needs to be minimized with good stress management skills. Stress management skills need to be possessed and developed so that adolescents will be more skilled in implementing appropriate coping strategies. The target of the community service program that will be carried out is the Aisyiah Kadipiro orphanage. The phenomenon of stress caused by new adjustments to learning online during the Covid-19 pandemic makes teenagers feel stressed in learning. A solution that can be used to teach adolescents about stress management is through online stress management training. In this training, you will be taught about problem-solving when facing stressful situations and doing relaxation. The expected result of this community service activity is that teenagers in the orphanage can apply and practice coping strategies to manage stress during the Covid-19 pandemic.

The world of education in indonesia is currently experiencing a change in services due to the covid 19 pandemic and is required to make changes to the way of teaching, and other administrative services in the context of the indonesia education world, the massive changes in services resulting from the impact of the covid 19 pandemic have greatly disturbed students, teachers and parents. They are required to make changes to the way of teaching and learning and guide quickly and accurately.The role of the teacher is now very important because the learning prosess cannot be faceto-face anymore. The teacher must really do everything possible so that students can understand the material presented online.This study aims to determine:( 1) the role of teachers in improving PAI learning outcomes during the covid 19 pandemi at SD No. 1 Seminyak for the 2019/2020 school year, (2) learning outcomes during the covid 19 pandemi at SD No. 1 Seminyak 2019/2020 academic year, (3) inhibiting and supporting factors in the implementation of online learning in Islamic education subjects during the covid 19 pandemic at SD No. 1 Seminyak in the school year 2019/2020.This type of research is descriptive kwalitatif, the informan is determined by purposive method, while the key informants are the principel, religion teacher, home room teacher, students, student guardians and the data committee is analyzed by data reconstruction stages, data presentation, and verification conclusion.The results showed; (1) teachers are require to play a deeper role in online learning during the covid 19 pandemi, the online learning process delivered material through learning videos in the whatsap grop, make google absences from monitoring students to memorize short surahs via whatsapp or video calls to provide motivation and encouragement to students. (2) Pai's study results during the covid-19 pandemic are less than maximal because teachers cannot monitor students directly and many obstacles in online learning. (3) supporting factors in the implementation of online learning, namely, the availability of mobile quota and internet networks. While the inhibiting factor in online learning, namely, aconomi limitations, internet network is sometimes not as stable.

Basically, the principles of Al-Qur'an learning can be carried out using various methods, all of which have the same goal, namely so that children can read the Al-Qur'an properly and correctly. The low motivation of students in learning the Qur'an is still one of the reasons for the low quality of education, especially in the ability to read the Qur'an. One of the efforts to increase motivation to learn to Read and Write the Qur'an is the use of online methods during the Covid-pandemic. 19 can be carried out by educators or teachers in the reading and writing subject of the Koran which is the basis of learning in Islam The low motivation of students in learning Al-Qur'an is still one of the reasons for the low quality of education, especially in the ability to read Al-Qur'an. So it can be said that motivation and learning achievement are directly proportional to the learning methods developed. One of the efforts to increase the motivation to learn to read and write al-quran is to use appropriate methods that can be used by educators or teachers in reading and writing al-Qur'an subjects which are the basis of learning in Islam.