The current study focuses on the effectiveness of interactive instruction CDs which was designed for pre-school students. Sixty-seven second grade students who were taking "Computer Teaching in Pre-School Education" at Anadolu University, Education Faculty, Department of Pre-school Education participated in the current study. The data were collected in the fall semester of 2006. The data collection procedure lasted for 14 weeks. "Computer Aided Instructional Tool Evaluation Scale" was developed to analyze the current data. The aim of the scale instrument is to determine the effectiveness of interactive instructional CDs designed for the pre-school students. Descriptive survey was used to examine the resulting opinion of the students. For the research question, Arithmetic Mean (X), Frequency (f) and percentage (%) scores was used. (Contains 6 tables.)