This curriculum unit introduces intermediate grade and middle school students to the work of Stephen Sondheim, one of the most talented composers of the contemporary American musical theater, and teaches them about the process of writing an original musical. The unit notes that in his musical "Into the Woods" Sondheim incorporates (and distorts) elements of traditional fairy tales to create a lively and unique piece of theater. In the unit, students will create the libretto and script for an original musical based on the Grimm Brothers' fairy tale, "The Frog Prince." The unit's lesson--Sondheim's "Into the Woods": Fairy Tale Tunes--takes only two days to complete. Its classroom activities focus on improvisational techniques and small-group work. The unit provides a step-by-step detailed instructional plan for the teacher. (NKA)