An understanding of an author's structure of ideas assists readers in comprehending a text. Three kinds of writing activities relate to a reading comprehension subskill. (1) sequencing--the logical presentation of events, times, places, ideas or steps in a procedure to accomplish a task or to comprehend an event--for which a teaching progression might include self-relating, double-cued, text-supported, and varied sequences; (2) "inferencing"--the educated guess based on information that has limited availability or on information that may even be inaccurate; and (3) predicting--students are given information concerning a situation and asked to suggest a variety of possible results or consequences that could arise. Their suggestions would be based on limited textual information but supplemented by as much experiential knowledge as students could bring to the situation. These activities would give students opportunities to use their personal knowledge and experiences to apply techniques used by authors to express and organize their ideas. Through this kind of personally involved writing, students may be sensitized to text structures that may aid in comprehending written materials. (Each writing activity is followed by suggested exercises.) (HOD)