Baltimore/Washington Corridor Chamber of Commerce’s Business Tools Group (BTG) Seminar: “A Lesson From FISH: A Fresh Look At Our Assumptions,” presented by David Libdan of Applied Resources and Knowledge LLC. 8:15 a.m. to 9:30 a.m. at the BWCC office in Laurel. Cost: $10 for prepaid members, $20 at the door and for nonmembers. www.baltwashchamber.org