While we have different methods of teaching, WAC teachers, writing tutors and teachers of EAP share a common goal: to help students learn how to write effectively across the curriculum. To do this, students have to be able to situate each assignment within the larger context of questions and discussions in their course, in order to understand the role of that assignment in inducting them into the discipline. This article demonstrates the importance, students, of discerning this academic purpose, and suggests some ways in which students can be helped to develop routines of interrogating their essay questions to discover the purpose behind the question. It concludes by describ- ing ways of mainstreaming this teaching in collaboration with discipline professors across the curriculum. Working with undergraduate students in an Australian arts faculty, every day I grapple with the problem of purpose in students' writing the disciplines: a problem shared, in universities around the world, by WAC teachers, writing tutors (like myself), and teachers of English Academic Purposes (EAP) who aim to prepare non-English-speak- ing-background students for the demands …(of) subject-matter class- rooms in English-medium universities (Stoller 209). The nature of our concerns varies, depending upon our role in the students' writing

Creating a Textbook Writing Across the Curriculum activities have been successful not only in improving the art of writing but in fostering a wide variety of other skills critical to collegiate learning, such as conceptual integration (Weiss & Walter, 1980) and interdisciplinary study (Hamilton, 1980). The creation of a collaborative textbook, documents in which student writing representing the bulk of course work is assembled, has been used extensively with young students (Weiss and Walter, 1980). Its use as the exclusive text in a college setting remains unreported in recent educational literature, although this does not mean it is untried. Each semester during the 1992-93 academic year, two sections of undergraduates at Plymouth State College studied introductory psychology without purchasing any text or reserve materials. Students in these sections instead used a Writing-Across-the-Curriculum approach, in which writing and research skills were developed through mutually supporting projects. The students wrote their own textbook after researching key topics, while other students edited their work for accuracy, concepts, and form. All students reviewed and critiqued professional journal research for their semester papers. The students even proposed and wrote the questions on their final examinations. By the end of their term, participants had found, read, and critiqued journal-level research with the familiarity of graduating seniors. They had written an average of two pages of critical essays each week. Three out