From the reviews: "In 2004, the Fourth International Symposium on Education Informatics (SIIE) occurred in Caceres, Spain. Nineteen 'selected and improved papers' from that conference are presented in this book, and are appropriate for graduate students and researchers. ... All the papers have a brief introductory abstract and a good list of recent references. ... In conclusion, those who conduct studies or research related to e-learning need to examine this ... contemporary research." (Brad Reid, ACM Computing Reviews, Vol. 49 (12), December, 2008)