Using a case study approach, this report summarizes a teacher's observations of students working on a personal computer in both classroom and nonclassroom settings. The first section addresses teacher concerns about technology in education, such as fear of replacement by a computer and other symptoms of computer anxiety. Four phases of classroom computer implementation are then described, and a computer club for fourth-graders is discussed. Introduction of a computer into a fourth-grade classroom and the overall effect on classroom functioning is then described, including considerations of classroom organization, scheduling, management difficulties, time-sharing, and grouping. The results of videotaped observation of students, which was used to study the effect of various grouping arrangements on student interaction, are analyzed. Finally, issues of concern in using computers in a primary classroom are addressed, including motivation, difficulties in reading and equipment use, and use of fifth-grade tutors. This section also summarizes procedures, results, student reactions, problems, and possible solutions. Two references are provided. (LMM)