HCI is about how people use systems to conduct tasks in context. Most current HCI research focuses on a single or multiple users" interaction with system(s). Compared with the user, system and task components, context is a less studied area. The emergence of ubiquitous computing, context-aware computing, and mobile computing requires system design to be adaptive and respond to aspects of setting in which the tasks are performed, including other users, devices and environments. Given the importance of context in information system design, we note that even the notion of context in HCI is not well-defined. In this paper, we review several theories of context as it relates to interaction design. We also present our Context-centered Framework which is aimed to bridging end users" understand and designers" designing together. The research design and expected outcomes are also presented.