Resumen
Higher Order Thinking skills (HOTs) are important thinking skills for lifelong learners, active social responsibility and proactive employees in the 21st century. The rapid development of technology in education has made learning anywhere and anytime possible. This study was conducted to investigate the effect of the integration of peer instruction in online social network could on students ability to answer HOTs questions. Peer instruction is one of the learning techniques that promote HOTs in a cooperative learning setting. It promotes students? participation in class and increasestheir learning engagement. This study applied repeated measures one group pre-post test design which was carried out among 20 students (purposive sampling technique) in higher education institution. It was carried out in 3 different sessions. Students have to answer HOTs questions in the form of multiple choices using an online quiz system, while peer instruction activities were carried out using and online social network app. Findings show that there is significant effect of peer instruction activities on students quiz scores and no significant difference of students peer instruction activities among the 3 learning sessions.