Classroom response systems are often named as a popular way to integrate mobile technology in the classroom. As comprehensive collection of best practices and reflection on educational practices can be found at:
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http://cft.vanderbilt.edu/teaching-guides/technology/clickers/
This lists types of questions, types of learning activities, and lots of examples of clicker usage in different domains and application scenarios.
Set of references with underpinning research at:
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http://cft.vanderbilt.edu/docs/classroom-response-system-clickers-bibliography/
this lists references structured to introduction, effects, discipline specific etc.