NOVEMBER 7 TO DECEMBER 16  Well known for its dedication to new Canadian plays, Tarragon Theatre showcases the latest work by award-winning Toronto-based playwright (and mathematician!) John Mighton. Critically acclaimed, The Little Years tracks a young woman in the 1950s as she struggles with the transition from life as a precocious teen to the harsher reality of adulthood. Tarragon Theatre, Tuesday to Saturday 8 p.m., Saturday and Sunday 2:30 p.m., $21 to $53; call 416-531-1827 or visit Tarragon’s website to buy.  —Ana Taveira