CAI in mathematics for high school is especially designed as a teaching tools for the high school students as well as a teaching aid for teachers. This study is focused only on the four fundamentals operations regarding fractions: addition, subtraction, multiplication, and division. The 1st year high school students of MDC special Science High School are the respondents wherein 12 students have been observed from 7:40 am - 9:20 am (MWF). The researchers choose 1st year students be their respondents because they're fresh graduate from elementary and still acquire attitudes and behavior of being childish so CAI method is very suited for them to used. Because of the animation they are easily motivated.

The intention of this study is to teach the students by the entertaining way, because of the old systematic way of teaching some of the students was bored. This study includes the topic and person who operate this program.