NutzungsbedingungenThere is a growing commitment within science centres and museums to deploy computerbased exhibits to enhance participation and engage visitors with socio-scientific issues. As yet however, we have little understanding of the interaction and communication that arises with and around these forms of exhibits, and the extent to which they do indeed facilitate engagement. In this paper, we examine the use of novel computer-based exhibits to explore how people, both alone and with others, interact with and around the installations. The data are drawn from video-based field studies of the conduct and communication of visitors to the Energy Gallery at London's Science Museum. The paper explores how visitors transform their activity with and around computer-based exhibits into performances, and how such performances create shared experiences. It reveals how these performances can attract other people to become an audience to an individual's use of the system and subsequently sustain their engagement with both the performance and the exhibit. The observations and findings of the study are used to reflect upon the extent to which the design of exhibits enables particular forms of co-participation or shared experiences, and to develop design sensitivities that exhibition managers and designers may consider when wishing to engender novel ways of engagement and participation with and around computer-based exhibits. Hermanson, 1995;Hennes, 2002; Perry, 1989Perry, , 1993 Semper, 1990). As a result such institutions grapple with ways to support visitor engagement with science, and are thus concerned with visitor attitudes towards both science and representations of science. The authors of this paper, being a mix of academic researchers and practitioners at a science museum, respect that museum educators and exhibit developers take seriously the challenge of making subjects commonly perceived as boring or difficult engaging and have worked to develop ways to draw visitors into exhibits that aim to teach complex concepts from which most visitors would normally shy away. As such, a common task for those within the museum community, and perhaps more broadly within science education, is -how do you make the seemingly tedious engaging?Computer-based exhibits, particularly simulations and games, are often seen by museum educators and designers as a way forward -a means of engaging visitors with complex concepts in innovative ways (Farmelo & Carding, 1997 This paper seeks to contribute to the knowledgebase by looking at participation, and in particular how shared experiences arise both in and through visitors' performative activity with and around computer-based exhibits in the Energy Gallery at London's ScienceMuseum -exhibits that have been designed with, among other aims, the intention of engendering a range of activities that might be of interest to both the user(s) and the observers. Drawing upon field observations and video recordings of visitors' verbal and bodily conduct, this paper explores the social organi...