MARK POWELL taught for 22 years in Montessori 6-9 and 9-12 classrooms in the Boston area and the San Francisco Bay Area. He was also Technology Coordinator at St. Paul’s Episcopal School in Oakland, CA.  He was a teacher trainer with the Center for Montessori Teacher Education, New York for twelve years.  Mark has a M.Ed. degree (specialising in Conflict Resolution) from Lesley University in Cambridge MA, and also a MA State teaching credential.  He has published two dozen articles on Montessori education in Montessori and other education journals, and wrote a chapter in the 2008 book A Place for Play edited by Elizabeth Goodenough.  Mark has designed many classroom materials, several of which are now sold across the United States and internationally by companies such as Hello Wood and Nienhuis Montessori.  He has delivered workshops at American Montessori Society national conferences and has consulted for dozens of Montessori schools across the U.S. and in Australia and New Zealand. He returned home to Queensland in June 2016 and taught at the 9-12 level for another four years before leaving the classroom to join Montessori Australia.