Designed specifically for adult students in continuing studies, the sequence of core courses described in this paper reflects an interdisciplinary approach to humanities instruction that places the writing process within the broader context of critical thinking and liberal arts core instruction. The paper describes two course levels: the one entry level course is intended to assist adults in making the transition from the world of work to academe, while the two second-level courses focus on the needs to humanize the study of science and technology and to interpret the arts as expressions of human values. Following these brief descriptions, their common elements are listed, as are various assignments and procedures for incorporating writing instruction in them (especially the entry-level course). A report of the positive evaluations and results of this course sequence for adult students completes the paper. (RL)