Papers from Session C04, 'Technology and Methodology for Archaeological Practice: Practical applications for the past reconstruction', from the XV UISPP World Congress (Lisbon, 4-9 September 2006). Contents: 1) 3D Analysis of Quartzite Industries, case study (Telmo Pereira, Vera Moitinho); 2) 3D scanning and three-dimensional modelling: a new methodology applied to the study and conservation of paleolithic rock art. The examples of 'Las Caldas' cave (Priorio, Asturias) and 'Pena de Candamo' (San Roman de Candamo, Asturias, Spain) (M Soledad Corchon; E. Garcia; D. G. Aguilera; A. L. Munoz; J. G. Lahoz; J. S. Herrero); 3) Reconstructions of the past - How virtual can they be? (Antonio Jose Mendes, Alexandrino Goncalves, Fernando Silva); 4) Epistemic commitments, virtual reality, and archaeological representation (Matt Ratto); 5) Modelling early hominin behavioural ecology (Adam Newton); 6) Transforming archaeological data between different geographical scales - a GIS application for the estimation of population density (Karl Peter Wendt, Andreas Zimmermann); 7) Walkability analysis: A heuristic alternative method to pathway modelling (H.P. Blankholm); 8) Piecing together the fragmented potsherd information: Data-collecting methodology for reconstruction of a past action (Makoto Tomii); 9) GIS-based geomorphologycal models for prediction of the systems in prehistoric occupation (case-study of Obi-Rakhmat Rockshelter Vicinity, Western Tien-Shan) (I. S. Novikov); 10) The Challenge of Archaeological Data Integration (Keith W. Kintigh); 11) Historical and territorial analysis. A Contribution to the Study of the Defence of the City of Lisbon - The Peninsular Wars by (Helena Rua); 12) Environmental Suitability and land use - a diachronic comparison (Andreas Zimmermann, Karl Peter Wendt); 13) Advanced Methods for Dating (Leo Dubal); 14) Time Drilling Through the Past of the Island of Crete (A. Sarris et al); 15) ADABweb - Information System with Geo Web Services for the Cultural Heritage of Lower Saxony (Germany) (Otto Mathias Wilbertz); 16) Organic remains from the Copper Age settlement of Ecser (Katalin Herbich, Robert Patay).