Through developments with the use of the "Apple Macintosh" computer, "HyperCard," and "MacRecorder," children in preschool handicapped programs are now capable of participating in appropriate computerized learning experiences. "HyperCard" allows educators to produce their own computerized instructional lessons with a software program that integrates text, graphics, and sound. "MacRecorder" is a sound input device that allows recording and storing of digitized sounds; it has a built-in microphone, microphone jack, line jack, and an input level control knob. The delivery of presentations using these software products requires step-by-step organization through instructional software design. The design of a program called "MacMouse" is used to demonstrate application of the software design process, the "Macintosh" computer, "HyperCard" software, and the "MacRecorder" sound digitizer. "MacMouse" is an interactive tutorial to be used in a group situation with the teacher as the facilitator. It teaches awareness of facial parts, body parts, articles of clothing, and basic pre-kindergarten concepts. Provided are an outline of the steps in developing the "MacMouse" program, system requirements, curriculum considerations, and suggested opening scripts for lessons. (JDD)