The Web-based case library for the use of education technologies in classes was developed as part of a scientific project, which aimed at revealing the successful examples of teachers' use of information technologies for instructional purposes in primary schools in Turkey. Its importance is due to its facilitation of experience-sharing among teachers, especially with candidate teachers, bridging the gap between theory and practice, and additionally, diffusion of innovations-related changes. To this end, an internet-based database was created by compiling the case studies obtained by interviews and observations in schools. This database was then transformed into a Web-library equipped with visual elements by means of an efficient classification system. (c) 2011 Published by Elsevier Ltd. Open access under CC BY-NC-ND license.