One-to-one computing environments change and improve classroom dynamics as individual students can bring handheld devices fitted with wireless communication capabilities into the classrooms. However, the screens of handheld devices, being designed for individual-user mobile application, limit promotion of interaction among groups of learners. This study proposes a design of classrooms that incorporates personal workspace and public workspace. Students use handheld devices as private workspace and work with peers on public workspace with shared displays through their handheld devices. Experiments confirmed that students with only handheld devices did not demonstrate expected participation ratios and actively interact with group members. The proposed shared display groupware promoted shared understanding of the workspace and increased awareness of partner actions. Collaboration was enhanced by creating the opportunity for students to use handheld devices to perform ideal communication patterns and avoid ineffective communication patterns.