CawClock is a design developed to explore 'peripheral interaction' in a primary school classroom context. CawClock makes selected time frames audible in order to provide teachers and children with background awareness of time. CawClock can for example be used to indicate the current 'rules' in the classroom, such as having to work independently or being allowed to work together.
CawClock consists of a display that shows the time as a regular analog clock, and four tangible tokens, each with their own color and image of an animal on it (a cat, bird, frog or owl). The tokens can be used to mark a time-frame on the clock. For example, if at 10.30h the children must work independently until 10.45h, the teacher can place a token next to the 9 of the clock, where the big hand will be at 10.45h. The part of the clock between the 6 and the 9 (the current time and the end of the time-frame) will then be colored. While the big hand is inside the colored part of the clock, a background soundscape will be heard that corresponds to the animal on the token (i.e. cat-sounds, bird-sounds, frog-sounds or owl-sounds). Furthermore, the soundscape gradually changes; the number of animals heard increases toward the end of the timeframe, without increasing the volume of the audio. This way, the soundscape informs the teacher and children that the time-frame is ongoing and indicates how much time has approximately passed already.
Bakker, S., Hoven, E. van den, Eggen, B., and Overbeeke, K. (2012). Exploring peripheral interaction design for primary school teachers. In Proceedings of the TEI'12 Conference on Tangible, Embedded and Embodied Interaction, pp. 245-252. Access online