Contents: Introduction. A. Costall, I. LeudarSituating Action I: Truth in the Situation. W.W. Gaver, Situating Action II: Affordances for Interaction: The Social is Material for Design. G. Ribeiro, Situating Action III: Acting, Dwelling, and Squatting: An Ecological Approach to the Relation Between Person and Urban Environment. I. Leudar, A. Costall, Situating Action IV: Planning as Situated Action. T. IngoldSituating Action V: The History and Evolution of Bodily Skills. Commentary. T. IngoldSituating Action VI: A Comment on the Distinction Between the Material and the Social.