218 Copyright © 2016, IGI Global. Copying or distributing in print or electronic forms without written permission of IGI Global is prohibited. Chapter 12 DOI: 10.4018/978-1-4666-8614-4.ch012 Genoveffa Tortora University of Salerno, Italy Analysing the Suitability of Virtual Worlds for Direct Instruction and Individual Learning Activities ABSTRACT Despite several researchers reporting evidence that 3D Virtual Worlds can be used to efectively support educational processes in recent years, the integration of this technology in real learning processes is not as commonplace as in other educational technologies. Instructional designers have to balance the cost associated with the development of these virtual environments with the expected outcomes reported by the use of the new technology, but for some types of learning processes those outcomes are not always easily predicted. In this document the authors experience using 3D Virtual Worlds is summarized with the aim of getting a deeper understanding of their potential pedagogical use when supporting two diferent types of learning activities commonly included on a course: direct instruction, which exploits the social dimension of the technology, and individual learning activities in which that feature is not used. Based on those experiences a set of guidelines for designing 3D virtual world learning environments is proposed. Telmo Zarraonandia Universidad Carlos III de Madrid, Spain Rita Francese Università di Salerno, Spain Ignazio Passero University of Salerno, Italy Paloma Díaz Universidad Carlos III de Madrid, Spain