The AMS blog "On Teaching and Learning Mathematics" has published numerous articles about active learning and related topics. For a concise overview of the articles published by the blog, see these two "year in review" articles: http://blogs.ams.org/matheducation/2015/06/01/the-first-year-of-on-teaching-and-learning-mathematics and http://blogs.ams.org/matheducation/2016/07/11/the-second-year-of-on-teaching-and-learning-mathematics/
Specifically, there is a five-part series on active learning from Fall 2015.
Editor Ben Braun says: "This five-part series on active learning from the AMS blog "On Teaching and Learning Mathematics" provides an overview of issues related to active learning in postsecondary mathematics education, including example tasks, self-assessment of active learning methods, example environments and structures that support active learning, balancing direct instruction with active learning, and more."
