Enhancing critical thinking in speaking skill through Sekawan-P

There were some problems in teaching English faced many high school teachers and students. Based on the observation in one a senior high school, it was found out some weaknesses in teaching English. Firstly, the teaching process relied on the exercises in the student book. Then, the teaching activity was more teacher-centered. Furthermore, the teacher never made development on the materials, which were more challenging. As a result, the students were not trained to have Critical Thinking. This could be seen when the teacher asked questions, they answered using short answer, without any elaboration. The process influenced the ability of their Critical Thinking. Actually, graduates of high schools should be equipped with 4C skills to face the Industrial era 4.0, namely Collaboration, Creativity, Critical Thinking, and Communication. All teachers can train those skills when they teach, including English teachers. Therefore, the objective of the research is to answer the question: “How the teaching model Sekawan-P can enhance the students’ Critical Thinking in speaking skill?”It was a Lesson Study (LS) program between an English teacher and three lecturers. They worked together to solve the problems mentioned above using this teaching model. They revised the existing lesson plan and materials, made improvement, and revised the teaching plan. The results showed that after they applied Sekawan-P, the Critical Thinking of the students developed. It can be seen on how they delivered their arguments in speaking skill.