Paper presented at ICERI 2011 Conference, Madrid, Spain.

2. http://www.wikipedia.org

7. Top 10 Fastest Growing Educational Reference Sites, September 2005( Us., Home and Work)
Table 1: Top 10 Fastest Growing Educational Reference Sites, September 2005( Us., Home and Wo

10. • Way of presentation and structure
• Approach of learning content
• Control of interaction by the user or the website
• Features of user’s interface multimedia elements
• Interface appearance
• Presentation of messages
• Grouping of options
• Help
• Ability to save – print – enrich