Physics or Natural science is an experimental science, applying the knowledge learned, students can explain phenomena in nature or explain a bunk of applications in life, solve practical problems. Thereby helping to form and develop qualities and competencies for learners including the ability to communicate, cooperate when working in groups and other professional competencies. Through the results of the survey of junior high school students for subjects with experimental practice as well as current teaching methods. The article shares some designs of teaching activities to promote cognitive activities of students in teaching in general, and in teaching physics or natural sciences in particular in high schools.