There have been several articles about the Summer 2013 PMI Workshops:
- Penn State Science News: http://science.psu.edu/news-and-events/featured-news/summer-workshop-improves-elementary-teachers-mathematical-fluency
- Center for Excellence in Science Education, a profile of Andrew Baxter and the PMI: http://cese.science.psu.edu/news-and-events/past-cese-highlights/andrew-baxter
- Write-up in the Penn State Math Department Newsletter (not online)