**Extended deadline: submissions due Friday 2nd March, 2012**

This is a sequel to the Symposium on Mathematical Practice and Cognition held at the AISB 2010 convention at de Montfort University, Leicester, UK. The Symposium on Mathematical Practice and Cognition II (http://homepages.inf.ed.ac.uk/apease/aisb12/home.html) will be one of several forming the AISB/IACAP World Congress 2012 (http://events.cs.bham.ac.uk/turing12/), in honour of Alan Turing.