The Rockland Education Foundation, which provides grants to teachers with worthy educational projects, is hosting prominent marine artist Michael Keane in an art demonstration next Sunday at 2 p.m. in the new Rockland High School auditorium. Keane, a Rockland High alumnus, will be honored by selectmen at the event. He will explain his technique while executing a new work. Afterward, a painting, “Off Nantucket,’’ will be auctioned. Tickets for the event are $10 and can be obtained online at www.rocklandeducationfoundation.org, at Amos A. Phelps & Son Insurance, and by calling Robert George at 781-878-0379. To bid in the auction, visit the foundation website for registration information. There is a $1,500 reserve price.