1. The document discusses using virtual worlds to enhance knowledge sharing and simulating conference experiences through a constructivist learning approach. 2. Key aspects of constructivism discussed include interactive, collaborative, and facilitated learning, as well as authentic and student-centered learning. 3. The document proposes using platforms like OpenSimulator, Imprudence, Hippo Grid Client, Facebook, and Mahara electronic portfolios in a virtual world conference setting to motivate learning, provide reinforcement, and allow for knowledge retention and transference through social interaction and collaboration.

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