Here are some local events happening today, Tuesday, May 6:

“If I Had a Hammer ... The Sustainable Home,” lecture series, “Green Building Materials” with David Graetz, Owner, Your Green Home, 12:10 to 1:40 p.m., main meeting room, Corvallis-Benton County Public Library.

North College Hill neighborhood walking tour, 6 to 8 p.m., Meet at the Starker House, 320 N.W. 23rd St. Presented by the Benton County and City of Corvallis Historic Resources Commissions and PreservationWORKS. Information: Chris Bentley, 766-6819 or Bob Richardson, 766-6908.

Euclid Quartet, 7:30 p.m., LaSells Stewart Center. Admission: $22 in advance, $25 at the door,

$5 for OSU student’s spouses, free for OSU students and K-12 students. Information: www.violins.org or 541-757-0902.

Qi Gong — 8-Piece Brocade,

6 to 7:30 p.m., Two Cranes Acupuncture and Massage, 1723 N.W. Kings Blvd. Workshop showing the classic set of qi qong movements. Loose fitting clothing suggested. Information/reservations: 738-6117.

Lecture: Christine Sleeter,

7 p.m., Construction and Engineering Auditorium, LaSells Stewart Center, OSU Campus. Sleeter presents “Intellectually Challenging Teaching in Multicultural Classrooms.” Information: 737-3576.

“Un-Counted: The New Math of American Elections,” documentary film and Q-A with Emmy award-winning director David Earnhardt, at 7 and

7:20 p.m., two showings at Darkside Cinema, 215 S.W. Fourth St. Documentary on election fraud in the 2004 and 2006 elections, with interviews of whistleblowers, computer programmers, statisticians, journalists and election officials.

For more information, see Friday’s Entertainer, the F.Y.I column in each day’s edition or www.gazettetimes.

com. Unless otherwise indicated, all events are free and open to the public.