Center Daily Times. http://www.centredaily.com/news/local/education/article197170609.html
Penn State news about the 2017 workshops: http://science.psu.edu/news-and-events/2017-news/Baxter6-2017
About the 2016 Brandywine workshops: http://news.psu.edu/story/418710/2016/07/27/impact/math-teachers-brush-their-skills-penn-state-brandywine
About the 2016 Greater Allegheny workshops: http://news.psu.edu/story/419735/2016/08/03/impact/teachers-learn-math-second-language-pa-mathematics-initiative
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)