M3 Challenge by Supporting Education | May 17, 2013 | 0 comments The 2013 M3 Challenge winners are from Plymouth, Minnesota, and were awarded $20,000. Submit a Comment Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Notify me of new posts by email. Δ This site uses Akismet to reduce spam. Learn how your comment data is processed.