Formadon Sando. (2017). The Use of Role play In Improving Students, Vocabulary Mastery At Grade Elaven of Persada Senior High School Bandar Lampung in Academic Year 2017-2018. This research aimed to know how role play in improving the students’ vocabulary mastery at SMA Perasa Bandar Lampung. Role play is applied in order to persuade the students to create connection between vocabularie…