Terwilliger, Karen: - Karen Terwilliger is the co-author of Hacking Learning Centers and a seasoned sixth grade English and social studies teacher in the George Washington Intermediate school in West Hempstead, New York. She has written sixth grade English curriculum and served as a mentor to new teachers. Her experience as a kindergarten teacher has inspired her to bring student voice and choice with station learning into the middle school and intermediate school settings. You can reach out to her at kterwilliger005@gmail.com and on Twitter @MrsKTerwilliger.