Tracy says Mystery State Skype "isn't a new idea, it's basically taking learning geography and placing it in a game format like Twenty Questions via Skype, by asking questions to guess the location of the other classroom. Not only does this connect students from across the country (or globe), but it also gives a context for students to apply geography with critical reasoning, collaboration, communication, digital citizenship, and information fluency -- 21st century skills."
Please look at her post for the full scoop to successfully run a Mystery State Skype!
Skype in the Classroom