Developed by the Oregon Elementary English Project, this curriculum unit introduces fifth and sixth graders to sentence structure. Based on transformational grammar, the unit (1) demonstrates to students their built-in knowledge of English grammar which enables them to produce and recognize sentences although they are not consciously aware of doing so; (2) acquaints students with different sentences parts; and (3) familiarizes students with some of the elementary terminology used to discuss some of these concepts. The unit consists of thirteen lessons with six additional lessons for sixth graders alone, exercises to help students discover for themselves some of the basic parts of a sentence and how they are put together, and a packet of supplementary materials to be used in conjunction with some of the lessons. Each lesson contains a statement of purpose, a description of the lesson content, background information, suggested procedures for teaching the lesson, and various student exercises. (See related documents CS 200 482-491 and CS 200 493-499.) (HS)