The last decade has seen an increase in the use of computers to support education. This has proved successful and today many courses are offered where learning material is delivered across the Internet. Traditionally this learning material is text-based, delivered through web pages and offers little opportunity for students to interact with each other. In recent years, access to high- speed Internet connections has become commonplace and has enabled more elaborate web-based applications to be developed. We are developing an interactive, immersive virtual reality environment called CLEV-R (Collaborative Learning Environment with Virtual Reality) that offers students an intuitive way to learn on-line. System Overview CLEV-R is a three dimensional (3D) environment where students and tutors become immersed in a Virtual Reality (VR) world. The environment mimics a real university setting where students can see representations of each other and interact freely. The VR world consists of a number of teaching rooms, a common area for socialising and a series of additional rooms used for meetings and group discussions. The teaching rooms provide functionality for tutors to display learning material on presentation boards and upload suitable animations or movie clips. A suite of communication controls enables interaction among users. Voice communication and text-chat facilities are provided allowing users to discuss learning material being presented. Users can control their on screen representations using a series of predefined gestures, e.g. a user may instruct their onscreen persona to raise its hand, nod its head etc. CLEV-R supports both synchronous and asynchronous learning. It is therefore not necessary for students and teachers to be present in the environment simultaneously. Students can access the learning material in their own time as well as attending synchronous lectures and classes. One area that has been neglected in traditional on-line learning environments is that of social interaction. This interaction plays an important role in a student's development and so CLEV-R provides support for socialising to take place. The common area provides a place for students to discuss both their course work and personal experiences outside of the environment. Uploading and displaying files such as photographs can augment these discussions. These sessions allow users to build up rapports with others and hence the feeling of isolation often experienced in other learning environments is removed. Collaborative work is frequently desirable in an e-learning scenario. In order to facilitate this, group meeting rooms are provided where small teams can carry out project work and partake in-group discussions. Students may also show their own files in these areas to demonstrate certain ideas. While development of the system is on going, preliminary user trials have been encouraging with both students and tutors agreeing on the potential of CLEV-R as a medium for learning. In addition to the development discussed here, work is currently underway to develop a mobile application. The focus of this work is to provide students with a subset of the functionality of CLEV-R on mobile devices such as Personal Digital Assistants (PDAs). This development is very exciting as it allows students to access learning material anytime, anywhere. Once the systems are complete a full-scale evaluation will be conducted involving both a technical appraisal of the system and studies to determine the effectiveness of this new e-learning paradigm.