Aldrich, Clerk. Learning online with games, simulations, and virtual words : strategies for online instruction / Clerk Aldrich. - San Francisco : Jossy- Brass, 2009. - x, 134 p : ill. Includes bibliographical references and index. ISBN: 9780438343 : Subjects--Topical Terms: Computer- assisted instruction.Computer games.Education--Simulation methods.Virtual rearity in education--Computer games. LC Class. No.: LB1029 / .S53A42