As its annual offering, the Wayne State University Opera Workshop will perform Seymour Barab's one-act opera "The Toy Shop for young audiences. Under the direction of Frances Brockington, the WSU Opera Workshop will perform four free shows: for Detroit-area schools at 10 a.m. Nov. 30 and Dec. 1, and for the public at 7 p.m. Dec. 1 and 2. All performances will take place on Wayne State 's main campus in the Community Arts Auditorium.