One of the important competencies that need to be focused on when forming and developing for high school students, is cooperation capability. Students cooperate to solve problems in learning and life
build relationships, learn from each other, and help each other grow together. This article presents the application of the teaching method in the corner, the teaching technique of mind mapping, and the KWL technique to maximize the cooperation between students in the same group to solve the learning tasks in a corner. Instead of teachers using visual methods, experimental methods, and small group cooperation methods to guide students to acquire knowledge, in this experiment, teachers ask students in groups to cooperate with each other to self-determine goals, make plans, assign tasks, share ideas, listen to each other's ideas, and support each other to complete learning tasks in the corners. Teachers only observe students organize learning activities and provide support when needed. The results of applying these teaching techniques and this corner teaching method to the development of students' cooperative capability show that students' cooperative capability is developed through teaching Chemistry in high schools.