The use of technology considered has able to help the learning process, especially in teaching English. In the industry revolution 4.0, there are some alternatives to teach English effectively. Plickers is an application that can help the teachers to measure student capability. This application used printable paper clickers to assign each student using the Plickers card. The teacher is instantly checking the student responses and assessment data for every question. This study was using mixed methods design to describe the use of Plickers for formative assessment of vocabulary mastery. The finding shows that Plickers help the teacher in preparing, executing, and examining in formative assessment. This application was able to improve students’ motivation and participation.

The research's aim was to find out if the use of circle games substantially enhances the vocabulary competence of the learners and to find out whether or not the learners are interested in using circle games. The study used a quasi-experimental technique. The study population was AMI AIPI Makassar's first year students in the academic year 2018/2019. The sample consisted of 50 students in Technical Class A and B. The research used cluster random sampling. In AMI AIPI Makassar, the investigator took two classes of the first year Technical Class students. The classes were split into the experimental class and class control. The results showed an important distinction between the score of the learners taught using circle games and without Circle Games. It was demonstrated by the experimental class ' mean score, which in the posttest was greater than the control class. The test outcome showed that the use of Circle Games substantially increased the mastery of the students. Analysis using the Likert Scale showed that learners wanted to learn English through Circle Games.