Penerapan Google Classroom untuk Meningkatkan Hasil Belajar Peserta Didik pada Materi Barisan dan Deret Aritmatika Kelas XI Otomatisasi dan Tata Kelola Perkantoran (OTKP) SMK Negeri 1 Marabahan

This research was conducted at SMK Negeri 1 Marabahan, with the type of research namely "Classroom Action Research". The subjects in this study were students of class XI OTKP, totaling 35 people, while the object in this study was the Google Classroom. The tools that will be used to collect data are observation sheets and tests. Observations were made to observe the activities of teachers and students in learning and tests were given to see the level of success of students from a teaching material delivered. The hypothesis proposed in this study is "The learning outcomes of students on Arithmetic Sequences and Series will increase, if the Google Classroom application is implemented correctly in class XI OTKP. Based on the results of observations made in the initial conditions, there were 20 people out of 35 students or approximately (57%) who did not complete and as many as 15 people from 35 students or approximately (43%) completed. Then in the first cycle there were 24 people from 35 students or about (68%) who completed and as many as 11 people from 35 students or around (32%) who did not complete. In the second cycle there were 33 people out of 35 students or around (94%) who had completed and as many as 2 people out of 35 students or approximately (6%) who had not. Based on the results of the study starting from the initial conditions, cycle I and cycle II there has been a significant increase. So it can be concluded that using the Google Classroom can improve student learning outcomes for Arithmetic Sequences and Series in class XI OTKP