Low scores on the Iowa Test of Basic Skills Mathematics Sub-Test went up considerably among students who made daily use of Computer-Assisted Instruction (CAI) at the Log Cabin Elementary School in Jackson County, North Carolina. Students who were in the lower 45% of a class in mathematics achievement were scheduled for daily ten-minute exposure to CAI, while the upper 55% of the pupils were given a ten-minute period with the computer once a week. The analysis shows that students in the lower 45% who participated daily, had greater gains than those who participated only once a week. The CAI program is credited with raising all mathematics scores, and is thought to account for the differences in amount of student improvement between the two pupil groups. (MP)