Author Description

OPAL is an interactive system using computer technology and hypermedia principles to bring a revolutionary approach to learning and teaching. Information on topics in cell-to-cell signalling spanning different disciplines is presented. There are no sequential and rigid patterns. Each user can browse freely and create his\her own knowledge trail. OPAL modules provide intuitive and easily remembered learning. • uses mouse activated icons and windows with senitive zones to access much more in-depth information, illustrations, or text, establishing a personal path through the subjects according to interest • allows animations and experimental simulations in which the user can play an active role • includes tests which give a detailed score of your knowledge and automatically prepare a revision programme • in the Teacher version, lessons of any desired sequence can be made which can be projected on a large screen •the Question Maker allows the teacher to make up questions for knowledge evaluation and many more easy-to-use features