BOSTON (9/17/09)--Massachusetts Treasurer Tim Cahill announced Monday that his office's Financial Education Department is teaming up with Chelsea, Mass.-based Metro CU and a radio station to offer "Four Downs for Finance," an essay contest for K-12 students. Joining the $763.5 million asset credit union in the project is WBZ-FM 98.5 The Sports Hub. In the contest, students submit essays about the importance of saving money to the website: Mass.gov/Treasury. A grand prize winner will receive a $500 savings account, a school visit from Cahill and New England Patriots offensive lineman Dan Koppen, and an invitation to attend the season's last Patriots game on Dec. 27. Each week during the Patriots regular season, three winning essays will be selected. Weekly winners will be announced on Patriots Radio Network and receive an autographed photo from Koppen. The grand prize winner, plus second and third place finalists will be chosen from the group of weekly winners for the opportunity to see the last game.