3.4.2 The researchers let the sample group students do a pretest exam in order to gather pretest scores of each
student. These scores are used to analyze for finding a learning achievement of the students after that.
3.4.3 The researchers explain how to use the CAI to the sample group students for their computer skill. After that,
the researchers describe how to operate the graphic user interface of the CAI to these students.
3.4.4 After the sample group students finish for learning all the lessons in the CAI, they do a posttest exam. Next,
the researchers gather post-test scores in order to find a learning achievement at last.