Take a tour of biomedical engineering labs, starting at 1:30 p.m. from the Electrical and Computer Engineering building, Room 202; or, join at any point along the tour. E-mail Cody at cbliss@email.arizona.edu for more info.

The Arizona Repertory Theatre presents a preview of "The Three Sisters," tonight at 7:30 in the Laboratory Theatre. Cost for this preview showing is $12.

The School of Music and Dance presents "Jazz at the AZ Harmonic" at 7:30 p.m. in Crowder Hall. Tickets are $8, or $6 for UA employees and seniors. Student tickets are $4.