Answerables is one of the most unique sites to come around in awhile. It is a cross between a Learning Management System and Game Based Learning environment to deliver a innovative and fun learning experience for students. All of this takes place in a 3D virtual world (i.e. think Second Life but geared towards education) that allows educators to create lessons, scavenger hunts, collaborate w/ other educators, and much much more. Best of all, all of this takes place in Answerables safe interactive environment. Also, Answerables can be used by any curriculum to teach any subject using Project Based Learning, "gamifying"a lesson, and differentiating instruction.
I highly recommend checking out Answerables by clicking here!!!
Below is a brief demo video...
*Answerables is an advertiser of Technology Tidbits.