1. Abrahamson, A. L. (1999). Teaching with a classroom communication system – what it involves and why it works. In Mini-course presented at the VII Taller Internacional “Nuevas Tendencias en la Ensenanza de la Fisica, Benemerita Universidad Autonoma de Puebla, Puebla, Mexico, 27–30 May 1999. Retrieved March 25, 2005. Available from http://www.bedu.com/Publications/PueblaFinal2.pdf.
2. Cognitive psychology and its implications;Anderson,2000
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4. A lecture match or ‘Anything you can do I can do better’;Betts;Physics Education,1970
5. What’s the use of lectures?;Bligh,1998