Alexandra Mattson and Frank Greco were married on July 28 at the Babylon United Methodist Church. The reception was at the West Sayville Country Club. The bride is a math teacher at Brien McMahon High School in Norwalk, Conn., and is the daughter of Pam Stockley of West Babylon and Joseph Mattson of Valley Stream. The bridegroom works in construction for a Manhattan company and is the son of Diane and Michael Kuhn of Sayville. They live in Norwalk.