This study proposes a hierarchical hyper concept map (HHCM) course system which consists of a navigation map, concept maps, and hypermedia documents. Results of testing the HHCM as a course representation showed achievement was greater for students learning from the course represented by HHCM compared with those learning from a linearly represented course. Findings suggest the HHCM has good potential as a device for designing Web-based courses. (AEF)