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Roussou, Maria and Oliver, Martin and Slater, Mel (2008) Exploring activity theory as a tool for evaluating interactivity and learning in virtual environments for children. Cognition, Technology & Work, 10 (2). pp. 141-153. ISSN 1435-5558
Roussou, Maria and Oliver, Martin and Slater, Mel (2006) The virtual playground: an educational virtual reality environment for evaluating interactivity and conceptual learning. Virtual Reality, 10. pp. 227-240. ISSN 1434-9957
