This research is a study in the field of education in the form of Classroom Action Research on the application of the mnemonic method at Tebet 5 Muhammadiyah High School. This study aims to improve the English vocabulary skills of class X Muhammadiyah 5 Tebet high school students in the 2018-2019 school year by using the mnemonic method. This study used a classroom action research design w…