blog.mastah.org is a learning information blog site in the form of useful articles on various topics. blog.mastah.org is here to meet the needs of online learning information seekers. For that, it is hoped that the presence of the blog.mastah.org site is able to meet these needs. All articles on this site are compiled in a language style that is easy for readers to understand. So, we hope that blog.mastah.org can help increase the knowledge of Indonesian students.