From 15.-17th October 2012, the PISA experts on problem solving met on my invitation at Heidelberg in the rooms of the „Internationales Wissenschaftsforum Heidelberg“ (IWH). After PEG meetings at Santa Barbara (2009), Melbourne (2010, 2012), Boston (2011), and Budapest (2011) the final meeting has been hold now at Heidelberg [see my previous blog reports https://joachimfunke.de/tag/pisa/…