ABSTRACT In this study: the author developed a computer aided instruction material in Physics. The material included three sections: (1) the program design (2) the screen port arrangement (3) the CAI coursewares. This CAI teaching material is arranged in teaching activities. We arranged two groups, one is experiment group and one is control group, to response this CAI. teaching materials. We found that the experiment group had a good performance in learning. This paper we use CAI tutoring method to design the programs, The author strong suggest that the textbook authors can add CAI materials in textbooks and design some CAI coursewares for students.