Girls in upper elementary and middle-school grades are invited to form two-person teams for HUBweek’s Girl Hackathon, a two-hour learn-to-code event at MassChallenge (23 Dry Dock Avenue in Boston) on October 1, 10AM-noon.  It’s free and sponsored by The Girl Hackathon, Boston Public Schools, Becker College, Hopscotch, MassChallenge, and Nantucket Conference and New Dimensions in Technology (NDT).  There will be 20 teams, each consisting of two girls and a mentor, selected from those who register.  A parent/guardian of a team member should register the two girls for a team, and mentors will be provided by the event organizers.