Simulation and Micro-world Links
http://www.oise.utoronto.ca/~dphilip/Sim.html

Inquiry-based Learning Through Microworld Exploration
http://www.umcs.maine.edu/~larry/microworlds/proposal.html

Designing Simulations for Learning
http://www.usq.edu.au/electpub/e-jist/docs/Vol6_No1/designing_simulations_for_learni.htm

Hunt Labs – Background and Theories behind Virtual Environments
http://depts.washington.edu/huntlab/vr/background.htm