The Community Service Program which was carried out aimed to train students and teachers of SMPIT Al-Mustofa to use e-learning media Google Classroom during the Covid 19 pandemic. With this training, students and teachers can optimize the use of Google Classroom in the learning process. The implementation of this service consists of three stages, namely: preparation, implementation, and evaluation. The preparation stage was carried out to explore problems related to the potential for e-learning during the Covid 19 pandemic. At this stage, e-learning material was delivered and training on how to access and use Google Classroom. The evaluation phase is carried out to find out obstacles during training. This activity resulted in an increase in the knowledge of students and teachers of SMPIT Al-Mustofa about e-learning and skilled in using Google Classroom as an interactive and fun online learning medium in the process of teaching and learning activities during the Covid 19 pandemic and e-learning products, namely Google Classroom as an easy-to-use online learning medium.

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This classroom action research was conducted because of low critical thinking skills in the history subject of students in grade 10-E9 SMA Negeri 1 Taman. The purpose of this research is to improve critical thinking skills through the Discovery Learning learning model. The results of the study in cycle I showed an average value of 68 and cycle II increased to an average value of 82. The results of the regression test were Y = 60.987 + 0.238 and an increase of 17.1% which can be seen in the Summary table using SPSS 25. That is, the achievement of students' critical thinking skills through the Discovery Learning model in history subjects class 10-E9 SMA Negeri 1 Taman has increased. Based on this description it can be concluded that there is an increase in students' critical thinking skills in history subjects class 10-E9 SMA Negeri 1 Taman.