This experience-based career education cross-reference catalog for career education is one of four volumes designed to assist learning coordinators (teachers or work experience instructors) in developing individualized activity sheets for mildly mentally disabled secondary students. Each volume contains a listing of concepts, sub-concepts, interest areas, instructional objectives, on-site and learning-center resources needed, and learning activities. (Subjects of the other three catalogs are personal/social skills [CE 019 711], math [CE 019 712], and English/communications [CE 019 714]. A description of the project that produced these materials is available in the final report [CE 019 710].) (JH)