Charles River School Fair. 56 Centre Street. Dover. 10:00 a.m. to 3:00 p.m. Join us for a traditional country fair with plenty of amusement rides, a moonwalk, games, pony rides, crafts & activities for children of all ages. The Fair also features a huge yard sale with toys, bikes, children's & adult clothing & attic treasures. Tickets available for purchase for rides & activities which vary in cost from $1-$5. Visit www.charlesriverschool.org or call 508.785.8267 for more info.