William Schmachtenberg (Dae Miami in SL) has degrees in geology and paleontology from Cornell University(BA) and the University of Chicago(MS and Ph.D.). He has taught for 25 years at Franklin County High School in Rocky Mount, Virginia, USA, and for 17 years at Ferrum College. He has been actively involved in Virtual Worlds since 2009 in second life, Uru Online, and most recently, Unity 3d. Virtual world software can be used for collaboration, simulations, team building, problem-solving, and reviewing for state tests. Discussions from online meetings with educators lead to the publishing of a science paper a year ago in the Smithsonian Journal Paleobiology. From 2010 to 2011, I worked on a team of 5 educators and scientists to develop an online Mars Colony Simulation using Uru that was used in the NASA educational program VASTS at the Langley Research Center(See: http://www.idoodlesoftware.com/news-07262011.html). I have also published four white papers on how Uru can be used in schools (See https://sites.google.com/a/frco.k12.va.us/william-schmachtenberg/resources for free downloads of all my work). Uru was especially effective in helping my students score well on unit tests based on the new rigorous science standards in Virginia. Although Uru is effective in the classroom, it is limited in that it only runs on pcs, and requires a rather large download of the client program. Unity 3d allows educators to develop virtual worlds for pc, mac, or on the web for free! Virtual world software is a powerful tool in the twenty-first century classroom. Students as young as high school freshman have created wonderful worlds in Uru and Unity 3d.