Research findings support the use of computer-assisted instruction (CAI) as a curriculum supplement for improving math skills, including math fact fluency. There are a number of websites and mobile applications (i.e., apps) designed to build students' math fact fluency, but the options can become overwhelming. This article provides implementation guidelines to help teachers plan for CAI, including criteria for selecting a program and recommendations for monitoring student progress. In addition, free resources for CAI are discussed.