A nice tool that can be used for creating tests/quizzes online. Tests can be password protected so you have access to the results after anyone has completed the test. Does not require registration.
All of the United Nations education projects and initiatives. Games, quizzes, resources and projects, this could be a core site in engaging students our global society
This site is great , but unfort to access all content there is an acct fee. However, there is lots of great free stuff on it. Just click on the free stuff link.